Natural gas power plant and power system cooperative scheduling method and device, medium and equipment

Abstract

The invention discloses a natural gas power plant and power system cooperative scheduling method and device, a medium and equipment. According to the method, operation parameters of each natural gas power plant and power demand data of a power system are obtained in real time, a natural gas pipeline network topological graph is firstly constructed, then operation indexes of the power plants are updated through the graph, and the real-time power generation hours are calculated in combination with a preset formula. Then, according to the operation index, the reported data and the number of hours capable of generating power, calculating a declared gas amount surplus and gas consumption early warning information; and finally, the data and the real-time power demand are combined to carry out optimal scheduling on the natural gas power plant. According to the invention, the scheduling accuracy and response speed are improved, and the resource allocation is optimized, so that the problem that the natural gas power plant cannot be accurately scheduled according to the requirements of the power system in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of coordination between natural gas power plants and electric power systems, and in particular to a method, device, medium and equipment for coordinated dispatching between natural gas power plants and electric power systems. Background Art

[0002] In the operation and dispatch of the power system, natural gas power plants are important power generation resources, and their operating status has a significant impact on the safety and stability of the power grid. However, there is a lack of effective information sharing and coordination mechanism between the traditional power dispatching system and the natural gas supply system. This separation leads to the following problems:

[0003] Information islands: The power dispatching system cannot obtain detailed data of the natural gas supply system in real time, such as key parameters such as natural gas flow and pipeline pressure, which limits the accuracy and timeliness of dispatching decisions.

[0004] Low dispatching efficiency: Due to the lack of real-time data support, power dispatchers often need to conduct tedious manual verification and communication when faced with operation adjustment requests from natural gas power plants, which not only increases the workload but also reduces dispatching efficiency.

[0005] Inadequate emergency response capabilities: In emergency situations, such as a sudden interruption in natural gas supply or abnormal pipeline pressure, the power dispatching system is unable to respond quickly, thus affecting the stability and safety of power supply.

[0006] Difficulty in optimizing resource allocation: Due to the inability to fully grasp the natural gas supply situation, power dispatching has difficulty in optimizing the allocation of natural gas power plants, resulting in inefficient resource utilization.

[0007] These impacts make it impossible for existing technologies to accurately dispatch natural gas power plants according to power system demand. Summary of the invention

[0008] The present invention provides a method, device, medium and equipment for coordinated dispatching of a natural gas power plant and a power system, so as to solve the problem in the prior art that a natural gas power plant cannot be accurately dispatched according to the demand of the power system.

[0009] In a first aspect, the present application provides a method for coordinated dispatching of a natural gas power plant and a power system, including:

[0010] Obtain the real-time operating parameters of each natural gas power plant and the real-time power demand data of the power system;

[0011] Constructing a natural gas pipeline network topology diagram according to the various real-time operating parameters;

[0012] According to the natural gas pipeline network topology diagram, updating various operating indicators of each natural gas power plant;

[0013] According to the preset formula, the real-time available power generation hours are calculated;

[0014] According to the various operating indicators, the various data reported by each natural gas power plant on the day and the various real-time available power generation hours, the various reported gas volume surpluses on the day and the various gas consumption warning information on the day are calculated;

[0015] Optimized scheduling of each natural gas power plant is carried out based on the day's reported gas surplus, the day's gas consumption warning information and real-time electricity demand data.

[0016] This application can ensure that scheduling decisions are based on the latest system status information by obtaining the operating parameters of each natural gas power plant and the power demand data of the power system in real time. By constructing and updating the natural gas pipeline network topology map, the status of the natural gas supply network can be visualized, so as to more accurately monitor and predict the natural gas supply situation. Using these real-time updated operating indicators and reported data, combined with the real-time number of hours of power generation, the declared gas surplus and gas use warning information of the day can be accurately calculated to provide key data support for scheduling. Finally, combined with these data and preset scheduling rules, the natural gas power plant is optimized and scheduled, realizing effective coordination between the power system and the natural gas supply system. This process not only improves the real-time and accuracy of scheduling, but also enhances the responsiveness to changes in natural gas supply and optimizes resource allocation to solve the problem that the existing technology cannot accurately schedule natural gas power plants according to the needs of the power system.

[0017] As a preferred embodiment of the first aspect, the obtaining of each real-time operating parameter of each natural gas power plant is specifically:

[0018] The real-time operating parameters of each natural gas power plant include each natural gas instantaneous flow rate, each plant-end natural gas pipeline pressure and each gas turbine temperature control mode.

[0019] In this preferred embodiment, the present application can achieve real-time monitoring and accurate evaluation of the natural gas supply status by acquiring key real-time operating parameters of each natural gas power plant, including instantaneous flow, plant-side natural gas pipeline pressure, and gas turbine temperature control mode. This real-time monitoring capability enables the system to respond promptly to minor changes in natural gas supply, thereby accurately updating the operating indicators of each power plant in the natural gas supply network topology map.

[0020] As a preferred embodiment of the first aspect, the natural gas pipeline network topology map is constructed according to the various real-time operation parameters, specifically:

[0021] According to the geographical location of each natural gas power plant, the geographical distribution of each pipeline network, the owners of each pipeline, the gas supply pipeline of each natural gas power plant and the real-time operating parameters, a natural gas pipeline network topology map is constructed.

[0022] In this preferred embodiment, the present application can construct an accurate natural gas pipeline network topology map by comprehensively considering the geographical location of each natural gas power plant, the geographical distribution of the pipeline network, the pipeline ownership party, and the gas supply pipeline of each natural gas power plant, and combining real-time operating parameters such as instantaneous flow, plant-end natural gas pipeline pressure, and gas turbine temperature control mode. This topology map not only provides an intuitive view of the natural gas supply network, but also reflects the network status and power plant operation in real time. Such real-time monitoring and visualization capabilities enable the dispatching system to quickly identify supply bottlenecks, predict potential risks, and make corresponding dispatching decisions. Therefore, the present application improves the grasp of natural gas supply dynamics, strengthens the adaptability and flexibility of the power system to changes in natural gas supply, thereby optimizing the configuration of electricity and natural gas resources and reducing energy waste.

[0023] As a preferred embodiment of the first aspect, the real-time available power generation hours are calculated according to a preset formula, specifically:

[0024] The various real-time decimals of available power generation directly reflect the number of hours that the power plant can continue to generate power based on a single unit at the current moment, and can be used as a basis for determining whether the power plant meets the conditions for additional operation or continuous operation.

[0025] The preset formula is: real-time available power generation hours = (declared gas volume on the day - accumulated gas consumption) / instantaneous flow rate;

[0026] In the formula, the cumulative gas consumption is obtained by integrating the instantaneous flow rate of natural gas on that day;

[0027] According to a preset formula, each of the real-time available power generation hours is calculated.

[0028] In this preferred embodiment, the present application can accurately calculate the real-time available generating hours of each natural gas power plant by adopting the preset formula "real-time available generating hours = (declared gas volume on the day - cumulative gas consumption) / instantaneous flow", where the cumulative gas consumption is obtained by integrating the instantaneous flow of natural gas on the day. The use of this formula enables the system to dynamically evaluate the power generation potential and gas consumption efficiency of each power plant based on real-time data, thereby providing a key decision-making parameter for power dispatch. This precise calculation based on data allows dispatchers to optimize the allocation of power resources and ensure that the efficiency of natural gas use is maximized while meeting power demand.

[0029] As a preferred embodiment of the first aspect, the various data reported by each natural gas power plant on the same day include: the gas consumption of the entire natural gas power plant on the same day minus 1 day, the gas storage volume on the same day, the monthly cumulative gas consumption, the monthly contracted gas purchase volume, the declared gas volume on the same day, the calculated gas consumption on the same day, the number of units started on the same day, and the unit status on the same day plus 1 day.

[0030] In this preferred embodiment, the application can provide a comprehensive view of the operation and supply of natural gas power plants for the power system by collecting detailed data reported by each natural gas power plant on the same day, including the gas consumption of the whole plant on D-1 day, the gas storage on the same day, the monthly cumulative gas consumption, the monthly contracted gas purchase volume, the gas volume reported on D day, the calculated gas consumption on D day, the number of units started on D day, and the unit status on D+1 day. The integration and analysis of these data enable the power dispatching system to accurately predict and evaluate the reliability of natural gas supply and the power generation capacity of the power plant, thereby making a more accurate match between power demand and natural gas supply.

[0031] As a preferred embodiment of the first aspect, the optimization scheduling of each natural gas power plant is performed according to the reported gas surplus of the day, the gas consumption warning information of the day and the real-time power demand data, specifically:

[0032] Evaluate the load status of the power system based on real-time power demand data;

[0033] Determine the units in the natural gas power plant that require peak load according to the load conditions;

[0034] According to the reported gas surplus of the day, the gas usage warning information of the day and the units that need peak power, determine whether the units have a backup gas source;

[0035] If there is no backup gas source, the gas source will be supplied to the unit according to the gas source supply of the gas source supplier, and a peak shift warning will be issued when the gas source cannot be switched;

[0036] Otherwise, the grid-connected operation time of the natural gas power plant units will be optimized based on the day's declared gas surplus, the day's gas consumption warning information and the real-time electricity demand data.

[0037] In this preferred embodiment, the application optimizes the scheduling of each natural gas power plant by comprehensively considering key parameters such as the reported gas surplus of the day, gas use warning information, and real-time power demand data, and can achieve refined management of the start and stop and operation plan of the unit. This comprehensive consideration and optimization process enables the power system to flexibly adjust the power generation strategy according to the real-time changing supply and demand conditions, ensuring that the efficiency and economy of natural gas use are maximized while meeting power demand.

[0038] As a preferred embodiment of the first aspect, after calculating the reported gas surplus and gas consumption warning information of the day according to the operating indicators, the data reported by the natural gas power plants on the day and the real-time available power generation hours, the method further includes:

[0039] If the natural gas power plant misses reporting data on the day, the reported gas volume for the day will be adjusted in real time to obtain the first reported gas volume;

[0040] The first declared gas volume is reported and dispatched according to manual triggering.

[0041] In this preferred embodiment, if the natural gas power plant misses reporting data on the day, this application adjusts the reported gas volume on the day in real time to obtain the first reported gas volume, thereby ensuring the integrity and accuracy of the data. Finally, the first reported gas volume is reported and dispatched according to manual triggering, so that the dispatch process is flexible and responsive, and can adapt to emergencies and data updates in a timely manner. Therefore, the beneficial effects of this method are that it improves the accuracy and response speed of dispatch, enhances adaptability to changes in natural gas supply, optimizes resource allocation, and reduces energy waste.

[0042] In a second aspect, the present application provides a natural gas power plant and electric power system coordinated dispatching device. The natural gas power plant and electric power system coordinated dispatching device comprises a power grid dispatching control module and a power grid operation management module;

[0043] The power grid dispatching control module is used to obtain the real-time operating parameters of each natural gas power plant and the real-time power demand data of the power system;

[0044] Constructing a natural gas pipeline network topology diagram according to the various real-time operating parameters;

[0045] According to the natural gas pipeline network topology diagram, updating various operating indicators of each natural gas power plant;

[0046] According to the preset formula, the real-time available power generation hours are calculated;

[0047] The power grid operation management module is used to calculate the daily reported gas surplus and the daily gas consumption warning information according to the various operation indicators, the various data reported by the natural gas power plants on the day and the various real-time available power generation hours;

[0048] The grid dispatching control module is also used to optimize the dispatching of various natural gas power plants based on the day's declared gas surplus, the day's gas consumption warning information and real-time electricity demand data.

[0049] This device uses two modules to divide the work and coordinate the work to better dispatch the natural gas power plant according to the needs of the power system. This application can ensure that the dispatching decision is based on the latest system status information by obtaining the operating parameters of each natural gas power plant and the power demand data of the power system in real time. By constructing and updating the natural gas pipeline network topology map, the state of the natural gas supply network is visualized, so as to more accurately monitor and predict the natural gas supply. Using these real-time updated operating indicators and reported data, combined with the real-time number of hours of power generation, the declared gas surplus and gas use warning information of the day can be accurately calculated to provide key data support for dispatching. Finally, combined with these data and preset dispatching rules, the natural gas power plant is optimized and dispatched, realizing the effective coordination between the power system and the natural gas supply system. This process not only improves the real-time and accuracy of dispatching, but also enhances the responsiveness to changes in natural gas supply and optimizes resource allocation to solve the problem that the existing technology cannot accurately dispatch natural gas power plants according to the needs of the power system.

[0050] In a third aspect, the present application provides a computer-readable storage medium, the computer-readable storage medium including a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute a method for coordinated dispatching of a natural gas power plant and a power system as described. Its beneficial effects are the same as those of a method for coordinated dispatching of a natural gas power plant and a power system provided in the first aspect of the present application.

[0051] In a fourth aspect, the present application provides a terminal device comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements any one of the methods for coordinated scheduling of natural gas power plants and power systems as described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 : A flow chart of an embodiment of a method for coordinated dispatching of a natural gas power plant and a power system provided in the present application;

[0053] Figure 2 : A structural diagram of an embodiment of the interaction logic between the power grid operation management system and the power grid dispatching control system provided by the present application;

[0054] Figure 3 : A structural schematic diagram of an embodiment of the source and meaning of the real-time numerical value of the natural gas pipeline network diagram of the power plant of the power grid dispatching control system provided by this application;

[0055] Figure 4 : A structural diagram of an embodiment of the interpretation of gas volume information reporting data of a natural gas power plant in the power grid operation management system provided by this application;

[0056] Figure 5 : A structural diagram of an embodiment of a formula for analyzing gas volume information reported by a natural gas power plant in a power grid operation management system provided by the present application;

[0057] Figure 6 : A structural schematic diagram of an embodiment of a natural gas power plant and electric power system coordinated dispatching device provided in this application. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Embodiment 1

[0060] Please refer to Figure 1 , which is a method for coordinated scheduling of a natural gas power plant and a power system provided in an embodiment of the present invention.

[0061] In this embodiment, the process of the coordinated scheduling method of the natural gas power plant and the power system in this application is described in detail through steps S01-S06.

[0062] The logic of coordinated dispatch of natural gas and electricity based on real-time measurement data monitoring of natural gas power plants in this application is as follows: Figure 2 shown.

[0063] S01: Obtain the real-time operating parameters of each natural gas power plant and the real-time power demand data of the power system.

[0064] As a preferred embodiment of the first embodiment, the real-time operating parameters of each natural gas power plant are obtained as follows:

[0065] The real-time operating parameters of each natural gas power plant include each natural gas instantaneous flow rate, each plant-end natural gas pipeline pressure and each gas turbine temperature control mode, such as Figure 3 shown.

[0066] In this preferred embodiment, the present application can achieve real-time monitoring and accurate evaluation of the natural gas supply status by acquiring key real-time operating parameters of each natural gas power plant, including instantaneous flow, plant-side natural gas pipeline pressure, and gas turbine temperature control mode. This real-time monitoring capability enables the system to respond promptly to minor changes in natural gas supply, thereby accurately updating the operating indicators of each power plant in the natural gas supply network topology map.

[0067] S02: Constructing a natural gas pipeline network topology map according to the various real-time operating parameters.

[0068] As a preferred embodiment of the first embodiment, the natural gas pipeline network topology map is constructed according to the various real-time operation parameters, specifically:

[0069] A set of natural gas pipeline network topology maps for the whole province is deployed in the power grid dispatching and control system. Basic data including pipeline networks, power plants, distribution stations, valve rooms, etc. are monitored based on the approximate geographical location of each power plant and the geographical distribution of the pipeline network. Different pipeline owners and gas supply pipelines of each gas power plant are divided according to the legend. Specific monitoring indicators of gas supply of natural gas power plants, including instantaneous gas flow at the plant end, gas pipeline pressure at the plant end, gas turbine temperature control mode, and real-time available hours, are dynamically displayed at the icons of each natural gas power plant. For example, Figure 3 Among them, the instantaneous flow rate of natural gas at the plant end, the natural gas pipeline pressure at the plant end, and the temperature control mode of the gas turbine are obtained by direct acquisition, that is, the measurement data at the power plant side is accessed in real time using the automation system.

[0070] In this preferred embodiment, the present application can construct an accurate natural gas pipeline network topology map by comprehensively considering the geographical location of each natural gas power plant, the geographical distribution of the pipeline network, the pipeline ownership party, and the gas supply pipeline of each natural gas power plant, and combining real-time operating parameters such as instantaneous flow, plant-end natural gas pipeline pressure, and gas turbine temperature control mode. This topology map not only provides an intuitive view of the natural gas supply network, but also reflects the network status and power plant operation in real time. Such real-time monitoring and visualization capabilities enable the dispatching system to quickly identify supply bottlenecks, predict potential risks, and make corresponding dispatching decisions. Therefore, the present application improves the grasp of natural gas supply dynamics, strengthens the adaptability and flexibility of the power system to changes in natural gas supply, thereby optimizing the configuration of electricity and natural gas resources and reducing energy waste.

[0071] S03: According to the natural gas pipeline network topology diagram, update various operating indicators of various natural gas power plants.

[0072] S04: Calculate the real-time available power generation hours according to a preset formula.

[0073] As a preferred embodiment of the first embodiment, the real-time available power generation hours are calculated according to a preset formula, specifically:

[0074] The real-time available hours are calculated using the following formula.

[0075] Real-time available power generation hours = (Declared gas volume on D day - accumulated gas consumption) / instantaneous flow rate;

[0076] Among them, the reported gas volume on D day (10,000 cubic meters) is transmitted and refreshed to the grid dispatching control system by the grid operation management system every half hour, and each power plant only transmits this one value; the cumulative gas consumption (10,000 cubic meters) is obtained by integrating today's instantaneous natural gas flow (similar to the integrated power volume, but note that the instantaneous value of the flow must be converted into 10,000 cubic meters / minute before integration, and the cumulative gas consumption at the current moment is calculated with a frequency of minutes).

[0077] In this preferred embodiment, the present application can accurately calculate the real-time available generating hours of each natural gas power plant by adopting the preset formula "real-time available generating hours = (declared gas volume on the day - cumulative gas consumption) / instantaneous flow", where the cumulative gas consumption is obtained by integrating the instantaneous flow of natural gas on the day. The use of this formula enables the system to dynamically evaluate the power generation potential and gas consumption efficiency of each power plant based on real-time data, thereby providing a key decision-making parameter for power dispatch. This precise calculation based on data allows dispatchers to optimize the allocation of power resources and ensure that the efficiency of natural gas use is maximized while meeting power demand.

[0078] S05: Based on the various operating indicators, the various data reported by each natural gas power plant on the day and the various real-time available power generation hours, the various reported gas volume surpluses on the day and the various gas consumption warning information on the day are calculated.

[0079] As a preferred embodiment of the first embodiment, the various declared gas surpluses and various gas consumption warning information of the day are calculated based on the various operating indicators, various data reported by various natural gas power plants on the day, and various real-time available power generation hours, specifically:

[0080] A gas volume reporting module and a statistical analysis module are established in the power grid operation and management system. Natural gas power plants report daily the gas consumption of the entire plant on D-1 day, gas storage volume, monthly cumulative gas consumption, monthly contracted gas purchase volume, D-day declared gas volume, D-day estimated gas consumption, D-day unit startup number, D-day unit status and other data, such as Figure 4 As shown. The gas volume reported on D day is synchronized to the power grid dispatching and control system. Among them, the data analysis formula for reporting gas volume information of natural gas power plants in the power grid operation management system is as follows Figure 5 shown.

[0081] In this preferred embodiment, the application can provide a comprehensive view of the operation and supply of natural gas power plants for the power system by collecting detailed data reported by each natural gas power plant on the same day, including the gas consumption of the whole plant on D-1 day, the gas storage on the same day, the monthly cumulative gas consumption, the monthly contracted gas purchase volume, the gas volume reported on D day, the calculated gas consumption on D day, the number of units started on D day, and the unit status on D+1 day. The integration and analysis of these data enable the power dispatching system to accurately predict and evaluate the reliability of natural gas supply and the power generation capacity of the power plant, thereby making a more accurate match between power demand and natural gas supply.

[0082] Furthermore, if the power plant misses reporting and adjusts the reported gas volume on D-day in real time, the power plant will report it to the power grid operation management system, and the dispatcher will manually trigger the power grid operation management system to send it to the power grid dispatching control system.

[0083] If the natural gas power plant misses reporting data on the day, this application adjusts the reported gas volume on the day in real time to obtain the first reported gas volume, ensuring the integrity and accuracy of the data. Finally, the first reported gas volume is reported and dispatched according to manual triggering, making the dispatch process flexible and responsive, and able to adapt to emergencies and data updates in a timely manner. Therefore, the beneficial effects of this method are that it improves the accuracy and response speed of dispatch, enhances adaptability to changes in natural gas supply, optimizes resource allocation, and reduces energy waste.

[0084] S06: Optimize the scheduling of each natural gas power plant based on the day's declared gas surplus, the day's gas consumption warning information and real-time electricity demand data.

[0085] As a preferred embodiment of the first embodiment, the optimization scheduling of each natural gas power plant is performed according to the reported gas surplus of the day, the gas consumption warning information of the day and the real-time power demand data, specifically:

[0086] It mainly targets the following two scenarios: the gas source informs that the natural gas supply is limited and the power grid dispatcher needs to start the unit.

[0087] Scenario 1: The gas source informs that the natural gas supply is limited;

[0088] Grid load assessment: First, the grid dispatch center assesses whether the unit is ready for shutdown based on the regional grid load. For units that require peak operation, the power plant's natural gas declaration information is further analyzed to determine whether there are other gas sources, such as whether the power plant has gas tank reserves.

[0089] Communicate the conditions for switching supply: If the power plant has no reserve gas source, communicate with the gas source immediately to discuss whether the conditions for switching supply are met.

[0090] Peak shifting warning and monitoring: In the event that the gas source is unable to transfer supply and the temporary shutdown of the unit may cause peak shifting risks, the local dispatching center will be notified to adjust the load distribution or issue a peak shifting warning, and strengthen the monitoring of the gas volume and pipeline pressure of the power plant.

[0091] Emergency measures: If the pipeline pressure of the peak power plant is lower than the warning value, immediately notify the power plant for emergency decoupling and order the local dispatching center to perform peak-shifting operations.

[0092] Scenario 2: Grid dispatching requires the start-up of generating units;

[0093] Peak demand assessment: Based on the actual peak demand, the grid dispatching center determines the scope of additional units that need to be started.

[0094] Gas surplus sorting: The units are sorted according to the gas surplus reported by the power plant, with priority given to units with more remaining gas.

[0095] Grid-connected operation schedule: According to the gas surplus reported by the power plant, the grid-connected operation time of the unit is reasonably arranged to optimize the power supply. Through the above method, the present invention can effectively dispatch each natural gas power plant according to the reported gas surplus of the day, gas use warning information, real-time power demand data, gas volume and pipeline pressure, and optimize the start-stop and operation plan of the unit to ensure the stability and economy of power supply.

[0096] In this preferred embodiment, the application optimizes the scheduling of each natural gas power plant by comprehensively considering key parameters such as the reported gas surplus of the day, gas use warning information, and real-time power demand data, and can achieve refined management of the start and stop and operation plan of the unit. This comprehensive consideration and optimization process enables the power system to flexibly adjust the power generation strategy according to the real-time changing supply and demand conditions, ensuring that the efficiency and economy of natural gas use are maximized while meeting power demand.

[0097] This application can ensure that scheduling decisions are based on the latest system status information by obtaining the operating parameters of each natural gas power plant and the power demand data of the power system in real time. By constructing and updating the natural gas pipeline network topology map, the status of the natural gas supply network can be visualized, so as to more accurately monitor and predict the natural gas supply situation. Using these real-time updated operating indicators and reported data, combined with the real-time number of hours of power generation, the declared gas surplus and gas use warning information of the day can be accurately calculated to provide key data support for scheduling. Finally, combined with these data and preset scheduling rules, the natural gas power plant is optimized and scheduled, realizing effective coordination between the power system and the natural gas supply system. This process not only improves the real-time and accuracy of scheduling, but also enhances the responsiveness to changes in natural gas supply and optimizes resource allocation to solve the problem that the existing technology cannot accurately schedule natural gas power plants according to the needs of the power system.

[0098] Embodiment 2

[0099] Please refer to Figure 6 , which is a natural gas power plant and power system coordinated scheduling device provided in an embodiment of the present application.

[0100] In this embodiment, the natural gas power plant and electric power system coordinated dispatching device includes a power grid dispatching control module 10 and a power grid operation management module 20 .

[0101] The logic of coordinated dispatch of natural gas and electricity based on real-time measurement data monitoring of natural gas power plants in this application is as follows: Figure 2 shown.

[0102] The power grid dispatching control module 10 is used to obtain the real-time operating parameters of each natural gas power plant and the real-time power demand data of the power system.

[0103] As a preferred embodiment of the second embodiment, the real-time operating parameters of each natural gas power plant are obtained as follows:

[0104] The real-time operating parameters of each natural gas power plant include each natural gas instantaneous flow rate, each plant-end natural gas pipeline pressure and each gas turbine temperature control mode, such as Figure 3 shown.

[0105] In this preferred embodiment, the present application can achieve real-time monitoring and accurate evaluation of the natural gas supply status by acquiring key real-time operating parameters of each natural gas power plant, including instantaneous flow, plant-side natural gas pipeline pressure, and gas turbine temperature control mode. This real-time monitoring capability enables the system to respond promptly to minor changes in natural gas supply, thereby accurately updating the operating indicators of each power plant in the natural gas supply network topology map.

[0106] The power grid dispatching control module 10 is also used to construct a natural gas pipeline network topology map according to the various real-time operating parameters.

[0107] As a preferred embodiment of the second embodiment, the natural gas pipeline network topology diagram is constructed according to the various real-time operation parameters, specifically:

[0108] A set of natural gas pipeline network topology maps for the whole province is deployed in the power grid dispatching and control system. Basic data including pipeline networks, power plants, distribution stations, valve rooms, etc. are monitored based on the approximate geographical location of each power plant and the geographical distribution of the pipeline network. Different pipeline owners and gas supply pipelines of each gas power plant are divided according to the legend. Specific monitoring indicators of gas supply of natural gas power plants, including instantaneous gas flow at the plant end, gas pipeline pressure at the plant end, gas turbine temperature control mode, and real-time available hours, are dynamically displayed at the icons of each natural gas power plant. For example, Figure 3Among them, the instantaneous flow rate of natural gas at the plant end, the natural gas pipeline pressure at the plant end, and the temperature control mode of the gas turbine are obtained by direct acquisition, that is, the measurement data at the power plant side is accessed in real time using the automation system.

[0109] In this preferred embodiment, the present application can construct an accurate natural gas pipeline network topology map by comprehensively considering the geographical location of each natural gas power plant, the geographical distribution of the pipeline network, the pipeline ownership party, and the gas supply pipeline of each natural gas power plant, and combining real-time operating parameters such as instantaneous flow, plant-end natural gas pipeline pressure, and gas turbine temperature control mode. This topology map not only provides an intuitive view of the natural gas supply network, but also reflects the network status and power plant operation in real time. Such real-time monitoring and visualization capabilities enable the dispatching system to quickly identify supply bottlenecks, predict potential risks, and make corresponding dispatching decisions. Therefore, the present application improves the grasp of natural gas supply dynamics, strengthens the adaptability and flexibility of the power system to changes in natural gas supply, thereby optimizing the configuration of electricity and natural gas resources and reducing energy waste.

[0110] According to the natural gas pipeline network topology diagram, various operating indicators of various natural gas power plants are updated.

[0111] The power grid dispatching control module 10 is also used to calculate the real-time available power generation hours according to a preset formula.

[0112] As a preferred embodiment of the second embodiment, the real-time available power generation hours are calculated according to a preset formula, specifically:

[0113] The real-time available hours are calculated using the following formula.

[0114] Real-time available power generation hours = (Declared gas volume on D day - accumulated gas consumption) / instantaneous flow rate;

[0115] Among them, the reported gas volume on D day (10,000 cubic meters) is transmitted and refreshed to the grid dispatching control system by the grid operation management system every half hour, and each power plant only transmits this one value; the cumulative gas consumption (10,000 cubic meters) is obtained by integrating today's instantaneous natural gas flow (similar to the integrated power volume, but note that the instantaneous value of the flow must be converted into 10,000 cubic meters / minute before integration, and the cumulative gas consumption at the current moment is calculated with a frequency of minutes).

[0116] In this preferred embodiment, the present application can accurately calculate the real-time available generating hours of each natural gas power plant by adopting the preset formula "real-time available generating hours = (declared gas volume on the day - cumulative gas consumption) / instantaneous flow", where the cumulative gas consumption is obtained by integrating the instantaneous flow of natural gas on the day. The use of this formula enables the system to dynamically evaluate the power generation potential and gas consumption efficiency of each power plant based on real-time data, thereby providing a key decision-making parameter for power dispatch. This precise calculation based on data allows dispatchers to optimize the allocation of power resources and ensure that the efficiency of natural gas use is maximized while meeting power demand.

[0117] The power grid operation management module 20 is used to calculate the daily reported gas surplus and the daily gas consumption warning information according to the various operation indicators, the various data reported by each natural gas power plant on the day and the various real-time available power generation hours.

[0118] As a preferred embodiment of the second embodiment, the various declared gas surpluses and various gas consumption warning information of the day are calculated based on the various operating indicators, the various data reported by each natural gas power plant on the day, and the various real-time available power generation hours, specifically:

[0119] A gas volume reporting module and a statistical analysis module are established in the power grid operation and management system. Natural gas power plants report daily the gas consumption of the entire plant on D-1 day, gas storage volume, monthly cumulative gas consumption, monthly contracted gas purchase volume, D-day declared gas volume, D-day estimated gas consumption, D-day unit startup number, D-day unit status and other data, such as Figure 4 As shown. The gas volume reported on D day is synchronized to the power grid dispatching and control system. Among them, the data analysis formula for reporting gas volume information of natural gas power plants in the power grid operation management system is as follows Figure 5 shown.

[0120] In this preferred embodiment, the application can provide a comprehensive view of the operation and supply of natural gas power plants for the power system by collecting detailed data reported by each natural gas power plant on the same day, including the gas consumption of the whole plant on D-1 day, the gas storage on the same day, the monthly cumulative gas consumption, the monthly contracted gas purchase volume, the gas volume reported on D day, the calculated gas consumption on D day, the number of units started on D day, and the unit status on D+1 day. The integration and analysis of these data enable the power dispatching system to accurately predict and evaluate the reliability of natural gas supply and the power generation capacity of the power plant, thereby making a more accurate match between power demand and natural gas supply.

[0121] Furthermore, if the power plant misses reporting and adjusts the reported gas volume on D-day in real time, the power plant will report it to the power grid operation management system, and the dispatcher will manually trigger the power grid operation management system to send it to the power grid dispatching control system.

[0122] If the natural gas power plant misses reporting data on the day, this application adjusts the reported gas volume on the day in real time to obtain the first reported gas volume, ensuring the integrity and accuracy of the data. Finally, the first reported gas volume is reported and dispatched according to manual triggering, making the dispatch process flexible and responsive, and able to adapt to emergencies and data updates in a timely manner. Therefore, the beneficial effects of this method are that it improves the accuracy and response speed of dispatch, enhances adaptability to changes in natural gas supply, optimizes resource allocation, and reduces energy waste.

[0123] The power grid dispatch control module 10 is also used to optimize the dispatch of each natural gas power plant according to the reported gas surplus of the day, the gas consumption warning information of the day and the real-time power demand data.

[0124] As a preferred embodiment of the second embodiment, the optimization scheduling of each natural gas power plant is performed according to the reported gas surplus of the day, the gas consumption warning information of the day and the real-time power demand data, specifically:

[0125] It mainly targets the following two scenarios: the gas source informs that the natural gas supply is limited and the power grid dispatcher needs to start the unit.

[0126] Scenario 1: The gas source informs that the natural gas supply is limited;

[0127] Grid load assessment: First, the grid dispatch center assesses whether the unit is ready for shutdown based on the regional grid load. For units that require peak power, the power plant's natural gas declaration information is further analyzed to determine whether there are other gas sources, such as whether the power plant has gas tank reserves.

[0128] Communicate the conditions for switching supply: If the power plant has no reserve gas source, communicate with the gas source immediately to discuss whether the conditions for switching supply are met.

[0129] Peak shifting warning and monitoring: In the event that the gas source is unable to transfer supply and the temporary shutdown of the unit may cause peak shifting risks, the local dispatching center will be notified to adjust the load distribution or issue a peak shifting warning, and strengthen the monitoring of the gas volume and pipeline pressure of the power plant.

[0130] Emergency measures: If the pipeline pressure of the peak power plant is lower than the warning value, immediately notify the power plant for emergency decoupling and order the local dispatching center to perform peak-shifting operations.

[0131] Scenario 2: Grid dispatching requires the start-up of generating units;

[0132] Peak demand assessment: Based on the actual peak demand, the grid dispatching center determines the scope of additional units that need to be started.

[0133] Gas surplus sorting: The units are sorted according to the gas surplus reported by the power plant, with priority given to units with more remaining gas.

[0134] Grid-connected operation schedule: According to the gas surplus reported by the power plant, the grid-connected operation time of the unit is reasonably arranged to optimize the power supply. Through the above method, the present invention can effectively dispatch each natural gas power plant according to the reported gas surplus of the day, gas use warning information, real-time power demand data, gas volume and pipeline pressure, and optimize the start-stop and operation plan of the unit to ensure the stability and economy of power supply.

[0135] In this preferred embodiment, the application optimizes the scheduling of each natural gas power plant by comprehensively considering key parameters such as the reported gas surplus of the day, gas use warning information, and real-time power demand data, and can achieve refined management of the start and stop and operation plan of the unit. This comprehensive consideration and optimization process enables the power system to flexibly adjust the power generation strategy according to the real-time changing supply and demand conditions, ensuring that the efficiency and economy of natural gas use are maximized while meeting power demand.

[0136] This device uses two modules to divide the work and coordinate the work to better dispatch the natural gas power plant according to the needs of the power system. This application can ensure that the dispatching decision is based on the latest system status information by obtaining the operating parameters of each natural gas power plant and the power demand data of the power system in real time. By constructing and updating the natural gas pipeline network topology map, the state of the natural gas supply network is visualized, so as to more accurately monitor and predict the natural gas supply situation. Using these real-time updated operating indicators and reported data, combined with the real-time number of hours of power generation, the declared gas surplus and gas use warning information of the day can be accurately calculated to provide key data support for dispatching. Finally, combined with these data and preset dispatching rules, the natural gas power plant is optimized and dispatched, realizing the effective coordination between the power system and the natural gas supply system. This process not only improves the real-time and accuracy of dispatching, but also enhances the responsiveness to changes in natural gas supply and optimizes resource allocation to solve the problem that the existing technology cannot accurately dispatch natural gas power plants according to the needs of the power system.

[0137] Embodiment three:

[0138] The embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for coordinated scheduling of a natural gas power plant and a power system;

[0139] Wherein, the method for coordinated dispatching of a natural gas power plant and a power system, if implemented in the form of a software functional unit and used as an independent product, can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-On l yMemory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0140] Embodiment 4

[0141] The present application provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and when the processor executes the computer program, it implements any one of the natural gas power plant and power system coordinated scheduling methods as described in Example 1.

[0142] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for coordinated dispatching of a natural gas power plant and a power system, characterized in that: include: Obtain the real-time operating parameters of each natural gas power plant and the real-time power demand data of the power system; Constructing a natural gas pipeline network topology diagram according to the various real-time operating parameters; According to the natural gas pipeline network topology diagram, updating various operating indicators of each natural gas power plant; According to the preset formula, the real-time available power generation hours are calculated; According to the various operating indicators, the various data reported by each natural gas power plant on the day and the various real-time available power generation hours, the various reported gas volume surpluses on the day and the various gas consumption warning information on the day are calculated; Optimized scheduling of each natural gas power plant is carried out based on the day's reported gas surplus, the day's gas consumption warning information and real-time electricity demand data.

2. The coordinated dispatching method of natural gas power plant and electric power system according to claim 1 is characterized in that: The real-time operating parameters of each natural gas power plant are obtained as follows: The real-time operating parameters of each natural gas power plant include each natural gas instantaneous flow rate, each plant-end natural gas pipeline pressure and each gas turbine temperature control mode.

3. The coordinated dispatching method of natural gas power plant and electric power system according to claim 2 is characterized in that: The natural gas pipeline network topology diagram is constructed according to the various real-time operating parameters, specifically: According to the geographical location of each natural gas power plant, the geographical distribution of each pipeline network, the owners of each pipeline, the gas supply pipeline of each natural gas power plant and the real-time operating parameters, a natural gas pipeline network topology map is constructed.

4. The coordinated dispatching method of natural gas power plant and electric power system according to claim 1 is characterized in that: The real-time available power generation hours are calculated according to the preset formula, specifically: The preset formula is: real-time available power generation hours = (declared gas volume on the day - accumulated gas consumption) / instantaneous flow rate; In the formula, the cumulative gas consumption is obtained by integrating the instantaneous flow rate of natural gas on that day; According to a preset formula, each of the real-time available power generation hours is calculated.

5. The coordinated dispatching method of natural gas power plant and electric power system according to claim 1 is characterized in that: The data reported by each natural gas power plant on the same day include: the gas consumption of the entire natural gas power plant on the same day minus 1 day, the gas storage volume on the same day, the monthly cumulative gas consumption, the monthly contracted gas purchase volume, the declared gas volume on the same day, the calculated gas consumption on the same day, the number of units started on the same day, and the unit status on the same day plus 1 day.

6. The coordinated dispatching method of natural gas power plant and electric power system according to claim 1 is characterized in that: The above-mentioned optimization dispatch of each natural gas power plant is carried out according to the daily declared gas surplus, the daily gas consumption warning information and the real-time power demand data, specifically: Evaluate the load status of the power system based on real-time power demand data; Determine the units in the natural gas power plant that require peak load according to the load conditions; According to the reported gas surplus of the day, the gas usage warning information of the day and the units that need peak power, determine whether the units have a backup gas source; If there is no backup gas source, the gas source will be supplied to the unit according to the gas source supply of the gas source supplier, and a peak shift warning will be issued when the gas source cannot be switched; Otherwise, the grid-connected operation time of the natural gas power plant units will be optimized based on the day's declared gas surplus, the day's gas consumption warning information and the real-time electricity demand data.

7. The coordinated dispatching method of natural gas power plant and electric power system according to claim 1 is characterized in that: After calculating the reported gas surplus and gas consumption warning information of the day according to the operating indicators, the data reported by the natural gas power plants on the day and the real-time available power generation hours, the method further includes: If the natural gas power plant misses reporting data on the day, the reported gas volume for the day will be adjusted in real time to obtain the first reported gas volume; The first declared gas volume is reported and dispatched according to manual triggering.

8. A coordinated dispatching device for a natural gas power plant and a power system, characterized in that: Including power grid dispatching control module and power grid operation management module; The power grid dispatching control module is used to obtain the real-time operating parameters of each natural gas power plant and the real-time power demand data of the power system; Constructing a natural gas pipeline network topology diagram according to the various real-time operating parameters; According to the natural gas pipeline network topology diagram, updating various operating indicators of each natural gas power plant; According to the preset formula, the real-time available power generation hours are calculated; The power grid operation management module is used to calculate the daily reported gas surplus and the daily gas consumption warning information according to the various operation indicators, the various data reported by the natural gas power plants on the day and the various real-time available power generation hours; The grid dispatching control module is also used to optimize the dispatching of various natural gas power plants based on the day's declared gas surplus, the day's gas consumption warning information and real-time electricity demand data.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for coordinated scheduling of a natural gas power plant and a power system as described in any one of claims 1 to 7.

10. A terminal device, characterized in that: It comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and when the processor executes the computer program, it implements the method for coordinated dispatching of a natural gas power plant and a power system as described in any one of claims 1 to 7.

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