Power Plant Fuel Management System Solution
I. Overview of demand Due to the influence of the planned economy for decades, various links in the current fuel industry have varying degrees of unsatisfactory factors; at the same time, there are also situations in which management means are backward and management forms are not adapted, which results in production costs. Can not be minimized.
The fuel of the power plant is a large capital-occupied household, and the fuel cost accounts for about 75% of the power generation cost. Therefore, controlling the fuel cost is the key to reducing the cost of the power plant. Fuel management is undoubtedly an effective way to reduce costs, increase profits, and resist market risks. It is an important part of improving the management level of enterprises, improving fuel quality, and reducing fuel costs.
In power companies, doing a good job of fuel supply management is a necessary condition for guaranteeing the normal production of enterprises; it is a major way to reduce the cost of power generation for enterprises; it is a powerful means to accelerate the liquidity turnover of enterprises. In view of the above-mentioned importance, the company puts forward the requirements for the information management of fuel management. This requires the development of a set of management software that is suitable for the current business, which will enable the leaders to better control the production management situation.
Second, the overall system design 2.1 System design principles System design guidance Envision is from the actual needs of the power plant fuel management based on overall planning, in the "practical, reliable, advanced, economic" overall design principles to ensure that the system is highly integrated, The overall optimization, safety and reliability; make full use of computers, networks, bar code and other technologies and tools, based on the principle of combining practicality and advancement, to promote the power plant fuel management to a new level. The design and development of the system will follow the following principles:
The reliability of the system adopting mature technology is the key to ensure the stability of the system. It does not become a testing ground for new technologies. In system design and equipment selection, the stability of all aspects is fully considered. The system is reliable and its functions are perfect. It makes the system relatively independent. Local problems will not affect the normal operation of the system.
Good practicality is based on demand traction, focusing on practical results, highlighting priorities, focusing on long-term development, and emphasizing recent urgent needs.
The friendly usability follows the current actual business conditions. It is in line with daily work habits. The entire system is a Chinese language system based on a graphical interface. It has strong visibility, convenient prompts, and simple operation. Staff familiar with their own business operations can be trained On the machine operation.
The advanced nature of the system adopts an advanced system architecture system, hardware, software, and communication technology equipment to achieve advanced configuration and mature technologies. While ensuring advanced technology, the maturity of methods, technologies, and software should also be considered.
The openness and scalability of the system adopt international mainstream products as much as possible to ensure the feasibility of system integration, good interoperability and system scalability. And the equipment selection and design capacity of the system fully satisfy the need for system expansion.
System security and confidentiality The system provides network security and user rights and other aspects of safeguards, to confirm the identity of the system and password authentication to ensure system data security and system operation security.
The technical equipment and software platform used in the developed normative system shall comply with industry standards and national standards or regulations. According to the prevailing system development and design system structure, process flow and function modules, complete development documents shall be provided.
The design and implementation of resource utilization information should fully consider the protection of the existing computer hardware and software resources of the enterprise. Under the premise of meeting the demand, it should try to expand and improve on the basis of the original system.
The system's ease of maintenance uses a minimal modular design to accommodate organizational organizational changes.
The uniqueness of the data adopts distributed management, and reasonably plans the input points of the data, avoids repeated input of data, and integrates information through network transmission and database technology, so that the system obtains a large amount of information.
2.2 System Design Ideas For many years, the fuel management system of power plants has not had a comprehensive and general fuel management software, which makes the management of fuel and transportation information relatively backward compared with business management, and information exchange has formed certain obstacles. The information related to activities such as contract, settlement, quality, measurement, and cost in the fuel business has become an isolated island of information in each business segment. It has not been effectively organized and used, and a large number of manual tabulations are required in these business links. The labor volume is large and there are many repetitions. The documents still stay on the basis of manual filling and transmission. It takes time and effort, and causes a lot of human resources to be wasted in these complicated things. Many disadvantages indicate that the backward information management methods can no longer meet the needs of the times. Requirements, urgently needed to be solved.
Based on the above problems, we analyzed that the use of advanced computer information integration technology to solve fuel management is the key to solving the problem. Because fuel management is an organizational activity with multiple links, decentralized business scope, and continuous steps, establishing a network is more suitable for handling this kind of work, realizing the rational allocation of resources and information sharing, and according to the standardized design, the functional departments and pound rooms and laboratories Such as connecting, truly through the network transmission method to achieve business information delivery, rapid feedback, guidance and decision-making, the server's database for information exchange center, to achieve fuel information management system integration.
Through the information system platform, the system highly integrates all types of fuel information, adopts multi-level computer bar code encryption and decryption technologies, and computer network technologies, regulates the process control of coal entering the factory, and strengthens the supervision of posts such as coal supervision and discipline inspection. Eliminating management loopholes in fuel management, avoiding human factors and making fuel management more standardized and scientific. Improve work efficiency, enhance the company's production management level and the company's core competitiveness. To achieve the following goals:
Establish basic information such as user information files and contract files;
Establish basic information such as quality checklists, transportation and miscellaneous fees, etc.
Through the multi-layer encryption of the vehicle number, the internal and external isolation of the quality inspection process is realized;
Integration of measurement, quality inspection, contract and other information, timely and accurate settlement of payment for customers;
Provides user quality analysis and purchasing cost composition analysis functions;
Overcome the shortcomings of low efficiency, poor accuracy, and slow information transfer.
The general business process is shown in Figure 1.![]()
When the heavy vehicle arrives at the train station, the freighter at the station carries on-site handover with the station clerk;
After the heavy vehicles are handed over, the station clerk enters information on the delivery station, consignor, vehicle number, coal type, and standard weight in the waybill, and transmits it to the computer through the Internet.
According to the principle of sampling, the freight transporter of the plant shall arrange the sample number and notify the railway watchman that he is ready to pick up the car, notify the railroad track to prepare for measurement, inform the coal supervisor to prepare to supervise sampling, and the notified personnel can only receive the vehicle number and the standard weight. And sample number information, but do not know the originator, consignor and other information.
The coal supervision personnel fills in the coal sample number list according to the learned vehicle number and sample number information, and a sample number corresponds to a coal sample number list;
Sampling personnel under the supervision of coal supervision, according to the sample number corresponding to the train number collected coal samples.
Sampling personnel sampled the coal samples to the sample makers, and the sample makers made three samples, which were used for testing, sample preparation, and discipline inspection respectively. The samples were handed over to the sampling team leader.
The sampling squad leader prepares the bar code for the sample for the first time and attaches it to the sample bag, and the sample is passed to the coal supervision personnel.
The coal inspector compiled a bar code for the sample for the second time and attached it to the sample bag, and the sample was passed to the fuel department.
The fuel department compiled a barcode for the sample for the third time and attached it to the sample bag. The sample was passed to the laboratory.
The above three numbers are all stored in the computer server and are not allowed to be modified.
Laboratory personnel will be tested after receiving the sample and fill in the coal quality inspection report form;
The inspection report is marked with the bar code 3, which is passed to the dedicated decoding personnel. Through the special translation module, the server stores several coding correspondences. The decoder has the right to translate the original consignor and vehicle corresponding to the final sample. No., launch the correspondence between laboratory results and suppliers, and fill in the relevant information in the coal quality inspection report;
According to laboratory tests, metering and contract information, the company will settle the coal payment for the supplier and statistics the fuel settlement statistics.
The system provides a total of incoming coal aggregated by suppliers and statistical analysis reports such as fuel monthly report.
2.3 Network Architecture In the adopted network integration scheme, following a relevant network interconnection standard and specification, selecting the appropriate network interconnection technology and products (including switching, routing and access equipment), constructing a reasonable structure, good performance, and security Reliable network communication platform, taking into account the possibility of expanded video surveillance capabilities in the future, should meet high-quality voice, data, image and video communication services on the network facilities, combined with high-speed Gigabit Ethernet technology, To achieve the goal of providing high quality communication services.
In terms of security, if the local area network has the need to access Internet, in order to prevent hackers, illegal operations of personnel, and viruses, to ensure the security of the system, a firewall is required.
The network cabling design uses a star network cabling architecture, as shown in Figure 2.
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2.4 The overall function of the system In order to achieve the flow of fuel from the plant to the customer, the system should include at least the following functional modules, as shown in Figure 3: ![]()
Integrated management: Responsible for the maintenance of basic data and complete the setting of user rights;
Measurement management: Establishing the interface with measurement information to obtain the actual weight of each vehicle;
Encryption management: Encryption is performed successively at the sampling class, coal supervision, and fuel department;
Laboratory management: establish interface with laboratory information and obtain coal quality inspection report information;
Decoding management: automatic translation code 3, parsing the supplier;
Contract management: maintenance of price lists and contracts;
Settlement management: According to the measurement sheet, lab sheet and contract, complete the settlement of the user's payment.
Analysis Management: Complete user quality analysis, cost composition analysis and other content.
2.5 Key technologies The fuel management process of power plants has a large amount of information and is widely distributed. It is difficult to manage and control completely by means of labor. Therefore, the key technologies for fuel management and development are in line with the trend of technological development and low cost. The productized software required by the power companies in China has a very practical significance. The following technologies are mainly applied.
2.5.1 Barcode Technology The system uses barcode technology to encode three times, and each post only has postcode barcodes of its own posts, unable to understand the original information.
2.5.2 Networking Technology The construction of a power plant fuel management network uses the network architecture that is most suitable for the enterprise. The design adopts the star Ethernet structure and the second floor switching network. The core switch has enough data traffic transmission capability and addressability, and the network uses optical fiber transmission media and photoelectric conversion modules. The network has a good data interface and security isolation capabilities to ensure the safe operation of the system, to ensure comprehensive ability to query data under a certain degree of authority control.
2.5.3 Network Security Technology Network security construction is a systematic project. We usually adopt the following measures: ACL access control list Set rough access control filtering rules on the external border router to form the first line of defense of the internal network. Use filtering rules on the internal network to form access control and logical isolation between internal systems.
VLAN Virtual Local Area Network technology turns Ethernet communications into point-to-point communications, isolated by VLANs, and VLANs. The use of access control strategies to enhance the overall security of the network.
The FW firewall system installs firewall devices at the exit of the node network or between different security domains within the network. The firewall generally uses the IP and TCP packet header information to filter the IP packet information coming in and out of the protected network, and can control the information flow into and out of the network according to the security policy. At the same time, network address translation, auditing, and real-time alerting can be implemented. Protects the protected network and the external network.
2.5.4 RAID Technology Applications A redundant array of independent disks is a common system for high-capacity data storage at the server level. RAID systems use many small-capacity disk drives to store large amounts of data and increase reliability and redundancy.
2.5.5 Software-dedicated platform technology The application integration platform is developed using the C# language under the support of the .NET environment. It uses the B/S user query structure to record and acquire data in the system relational database. The program interface meets data entry, management, and calculations. Analyze and generate reports and other functions to use.
2.5.6 Multi-layer structure development technology In a three-tier architecture application system, the entire system consists of three parts: client, application server, and database server. The client only needs to install the human-computer interaction interface application. It is responsible for handling the interaction with the user and interaction with the application server. The application server accepts the request from the client application, then converts the request into a database request according to the application logic and then interacts with the database server, and transmits the result of the interaction with the database server to the client application. The database server software performs database operations based on the request sent by the application server, and transmits the result of the operation to the application server.
This entire system has many advantages:
The system is divided into different logical blocks and the level is very clear;
Enables "fat" clients to become more "thin" clients;
The development and management work is transferred to the server side, making distributed data processing possible;
Management and maintenance have become relatively simple.
Third, the system effect of fuel management information technology is not just to improve the efficiency of response, more importantly, to see the benefits, in the market economy environment, through the standard process of entering the factory, can reduce the cost of procurement, it has a direct cost of materials and inventory value Impact, data show that the cost of materials and inventory decreased by 5%, the company's sales profit rate increased by 28%, capital gains increased by 30%.
Fuel management informationization will bring qualitative changes to the day-to-day work of procurement management. First, the management personnel will focus on reducing costs and ensuring quality, and meet the functional requirements at the lowest cost; second, use the materials provided by the system. With fund information integration function, determine the reasonable volume and safety stock of each purchase part and control the inventory fund occupancy; again, according to the supplier quality report provided by the system, select the right supplier; use information integration system, according to market demand And corporate plans to improve the predictability of procurement and supply work.
After the system is put into operation, the system can run stably and reliably, and the fuel quality can be fed back to relevant departments in a timely manner, providing data for production decision making, and the economic benefits are very considerable. At the same time, quality analysis can be conducted to identify responsibilities, avoid unnecessary disputes, and improve work efficiency.
The fuel of the power plant is a large capital-occupied household, and the fuel cost accounts for about 75% of the power generation cost. Therefore, controlling the fuel cost is the key to reducing the cost of the power plant. Fuel management is undoubtedly an effective way to reduce costs, increase profits, and resist market risks. It is an important part of improving the management level of enterprises, improving fuel quality, and reducing fuel costs.
In power companies, doing a good job of fuel supply management is a necessary condition for guaranteeing the normal production of enterprises; it is a major way to reduce the cost of power generation for enterprises; it is a powerful means to accelerate the liquidity turnover of enterprises. In view of the above-mentioned importance, the company puts forward the requirements for the information management of fuel management. This requires the development of a set of management software that is suitable for the current business, which will enable the leaders to better control the production management situation.
Second, the overall system design 2.1 System design principles System design guidance Envision is from the actual needs of the power plant fuel management based on overall planning, in the "practical, reliable, advanced, economic" overall design principles to ensure that the system is highly integrated, The overall optimization, safety and reliability; make full use of computers, networks, bar code and other technologies and tools, based on the principle of combining practicality and advancement, to promote the power plant fuel management to a new level. The design and development of the system will follow the following principles:
The reliability of the system adopting mature technology is the key to ensure the stability of the system. It does not become a testing ground for new technologies. In system design and equipment selection, the stability of all aspects is fully considered. The system is reliable and its functions are perfect. It makes the system relatively independent. Local problems will not affect the normal operation of the system.
Good practicality is based on demand traction, focusing on practical results, highlighting priorities, focusing on long-term development, and emphasizing recent urgent needs.
The friendly usability follows the current actual business conditions. It is in line with daily work habits. The entire system is a Chinese language system based on a graphical interface. It has strong visibility, convenient prompts, and simple operation. Staff familiar with their own business operations can be trained On the machine operation.
The advanced nature of the system adopts an advanced system architecture system, hardware, software, and communication technology equipment to achieve advanced configuration and mature technologies. While ensuring advanced technology, the maturity of methods, technologies, and software should also be considered.
The openness and scalability of the system adopt international mainstream products as much as possible to ensure the feasibility of system integration, good interoperability and system scalability. And the equipment selection and design capacity of the system fully satisfy the need for system expansion.
System security and confidentiality The system provides network security and user rights and other aspects of safeguards, to confirm the identity of the system and password authentication to ensure system data security and system operation security.
The technical equipment and software platform used in the developed normative system shall comply with industry standards and national standards or regulations. According to the prevailing system development and design system structure, process flow and function modules, complete development documents shall be provided.
The design and implementation of resource utilization information should fully consider the protection of the existing computer hardware and software resources of the enterprise. Under the premise of meeting the demand, it should try to expand and improve on the basis of the original system.
The system's ease of maintenance uses a minimal modular design to accommodate organizational organizational changes.
The uniqueness of the data adopts distributed management, and reasonably plans the input points of the data, avoids repeated input of data, and integrates information through network transmission and database technology, so that the system obtains a large amount of information.
2.2 System Design Ideas For many years, the fuel management system of power plants has not had a comprehensive and general fuel management software, which makes the management of fuel and transportation information relatively backward compared with business management, and information exchange has formed certain obstacles. The information related to activities such as contract, settlement, quality, measurement, and cost in the fuel business has become an isolated island of information in each business segment. It has not been effectively organized and used, and a large number of manual tabulations are required in these business links. The labor volume is large and there are many repetitions. The documents still stay on the basis of manual filling and transmission. It takes time and effort, and causes a lot of human resources to be wasted in these complicated things. Many disadvantages indicate that the backward information management methods can no longer meet the needs of the times. Requirements, urgently needed to be solved.
Based on the above problems, we analyzed that the use of advanced computer information integration technology to solve fuel management is the key to solving the problem. Because fuel management is an organizational activity with multiple links, decentralized business scope, and continuous steps, establishing a network is more suitable for handling this kind of work, realizing the rational allocation of resources and information sharing, and according to the standardized design, the functional departments and pound rooms and laboratories Such as connecting, truly through the network transmission method to achieve business information delivery, rapid feedback, guidance and decision-making, the server's database for information exchange center, to achieve fuel information management system integration.
Through the information system platform, the system highly integrates all types of fuel information, adopts multi-level computer bar code encryption and decryption technologies, and computer network technologies, regulates the process control of coal entering the factory, and strengthens the supervision of posts such as coal supervision and discipline inspection. Eliminating management loopholes in fuel management, avoiding human factors and making fuel management more standardized and scientific. Improve work efficiency, enhance the company's production management level and the company's core competitiveness. To achieve the following goals:
Establish basic information such as user information files and contract files;
Establish basic information such as quality checklists, transportation and miscellaneous fees, etc.
Through the multi-layer encryption of the vehicle number, the internal and external isolation of the quality inspection process is realized;
Integration of measurement, quality inspection, contract and other information, timely and accurate settlement of payment for customers;
Provides user quality analysis and purchasing cost composition analysis functions;
Overcome the shortcomings of low efficiency, poor accuracy, and slow information transfer.
The general business process is shown in Figure 1.
When the heavy vehicle arrives at the train station, the freighter at the station carries on-site handover with the station clerk;
After the heavy vehicles are handed over, the station clerk enters information on the delivery station, consignor, vehicle number, coal type, and standard weight in the waybill, and transmits it to the computer through the Internet.
According to the principle of sampling, the freight transporter of the plant shall arrange the sample number and notify the railway watchman that he is ready to pick up the car, notify the railroad track to prepare for measurement, inform the coal supervisor to prepare to supervise sampling, and the notified personnel can only receive the vehicle number and the standard weight. And sample number information, but do not know the originator, consignor and other information.
The coal supervision personnel fills in the coal sample number list according to the learned vehicle number and sample number information, and a sample number corresponds to a coal sample number list;
Sampling personnel under the supervision of coal supervision, according to the sample number corresponding to the train number collected coal samples.
Sampling personnel sampled the coal samples to the sample makers, and the sample makers made three samples, which were used for testing, sample preparation, and discipline inspection respectively. The samples were handed over to the sampling team leader.
The sampling squad leader prepares the bar code for the sample for the first time and attaches it to the sample bag, and the sample is passed to the coal supervision personnel.
The coal inspector compiled a bar code for the sample for the second time and attached it to the sample bag, and the sample was passed to the fuel department.
The fuel department compiled a barcode for the sample for the third time and attached it to the sample bag. The sample was passed to the laboratory.
The above three numbers are all stored in the computer server and are not allowed to be modified.
Laboratory personnel will be tested after receiving the sample and fill in the coal quality inspection report form;
The inspection report is marked with the bar code 3, which is passed to the dedicated decoding personnel. Through the special translation module, the server stores several coding correspondences. The decoder has the right to translate the original consignor and vehicle corresponding to the final sample. No., launch the correspondence between laboratory results and suppliers, and fill in the relevant information in the coal quality inspection report;
According to laboratory tests, metering and contract information, the company will settle the coal payment for the supplier and statistics the fuel settlement statistics.
The system provides a total of incoming coal aggregated by suppliers and statistical analysis reports such as fuel monthly report.
2.3 Network Architecture In the adopted network integration scheme, following a relevant network interconnection standard and specification, selecting the appropriate network interconnection technology and products (including switching, routing and access equipment), constructing a reasonable structure, good performance, and security Reliable network communication platform, taking into account the possibility of expanded video surveillance capabilities in the future, should meet high-quality voice, data, image and video communication services on the network facilities, combined with high-speed Gigabit Ethernet technology, To achieve the goal of providing high quality communication services.
In terms of security, if the local area network has the need to access Internet, in order to prevent hackers, illegal operations of personnel, and viruses, to ensure the security of the system, a firewall is required.
The network cabling design uses a star network cabling architecture, as shown in Figure 2.
Integrated management: Responsible for the maintenance of basic data and complete the setting of user rights;
Measurement management: Establishing the interface with measurement information to obtain the actual weight of each vehicle;
Encryption management: Encryption is performed successively at the sampling class, coal supervision, and fuel department;
Laboratory management: establish interface with laboratory information and obtain coal quality inspection report information;
Decoding management: automatic translation code 3, parsing the supplier;
Contract management: maintenance of price lists and contracts;
Settlement management: According to the measurement sheet, lab sheet and contract, complete the settlement of the user's payment.
Analysis Management: Complete user quality analysis, cost composition analysis and other content.
2.5 Key technologies The fuel management process of power plants has a large amount of information and is widely distributed. It is difficult to manage and control completely by means of labor. Therefore, the key technologies for fuel management and development are in line with the trend of technological development and low cost. The productized software required by the power companies in China has a very practical significance. The following technologies are mainly applied.
2.5.1 Barcode Technology The system uses barcode technology to encode three times, and each post only has postcode barcodes of its own posts, unable to understand the original information.
2.5.2 Networking Technology The construction of a power plant fuel management network uses the network architecture that is most suitable for the enterprise. The design adopts the star Ethernet structure and the second floor switching network. The core switch has enough data traffic transmission capability and addressability, and the network uses optical fiber transmission media and photoelectric conversion modules. The network has a good data interface and security isolation capabilities to ensure the safe operation of the system, to ensure comprehensive ability to query data under a certain degree of authority control.
2.5.3 Network Security Technology Network security construction is a systematic project. We usually adopt the following measures: ACL access control list Set rough access control filtering rules on the external border router to form the first line of defense of the internal network. Use filtering rules on the internal network to form access control and logical isolation between internal systems.
VLAN Virtual Local Area Network technology turns Ethernet communications into point-to-point communications, isolated by VLANs, and VLANs. The use of access control strategies to enhance the overall security of the network.
The FW firewall system installs firewall devices at the exit of the node network or between different security domains within the network. The firewall generally uses the IP and TCP packet header information to filter the IP packet information coming in and out of the protected network, and can control the information flow into and out of the network according to the security policy. At the same time, network address translation, auditing, and real-time alerting can be implemented. Protects the protected network and the external network.
2.5.4 RAID Technology Applications A redundant array of independent disks is a common system for high-capacity data storage at the server level. RAID systems use many small-capacity disk drives to store large amounts of data and increase reliability and redundancy.
2.5.5 Software-dedicated platform technology The application integration platform is developed using the C# language under the support of the .NET environment. It uses the B/S user query structure to record and acquire data in the system relational database. The program interface meets data entry, management, and calculations. Analyze and generate reports and other functions to use.
2.5.6 Multi-layer structure development technology In a three-tier architecture application system, the entire system consists of three parts: client, application server, and database server. The client only needs to install the human-computer interaction interface application. It is responsible for handling the interaction with the user and interaction with the application server. The application server accepts the request from the client application, then converts the request into a database request according to the application logic and then interacts with the database server, and transmits the result of the interaction with the database server to the client application. The database server software performs database operations based on the request sent by the application server, and transmits the result of the operation to the application server.
This entire system has many advantages:
The system is divided into different logical blocks and the level is very clear;
Enables "fat" clients to become more "thin" clients;
The development and management work is transferred to the server side, making distributed data processing possible;
Management and maintenance have become relatively simple.
Third, the system effect of fuel management information technology is not just to improve the efficiency of response, more importantly, to see the benefits, in the market economy environment, through the standard process of entering the factory, can reduce the cost of procurement, it has a direct cost of materials and inventory value Impact, data show that the cost of materials and inventory decreased by 5%, the company's sales profit rate increased by 28%, capital gains increased by 30%.
Fuel management informationization will bring qualitative changes to the day-to-day work of procurement management. First, the management personnel will focus on reducing costs and ensuring quality, and meet the functional requirements at the lowest cost; second, use the materials provided by the system. With fund information integration function, determine the reasonable volume and safety stock of each purchase part and control the inventory fund occupancy; again, according to the supplier quality report provided by the system, select the right supplier; use information integration system, according to market demand And corporate plans to improve the predictability of procurement and supply work.
After the system is put into operation, the system can run stably and reliably, and the fuel quality can be fed back to relevant departments in a timely manner, providing data for production decision making, and the economic benefits are very considerable. At the same time, quality analysis can be conducted to identify responsibilities, avoid unnecessary disputes, and improve work efficiency.
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