CN214100875U - System for improving peak load regulation and frequency modulation performance of power grid in heating period by utilizing energy storage of heat supply network - Google Patents
System for improving peak load regulation and frequency modulation performance of power grid in heating period by utilizing energy storage of heat supply network Download PDFInfo
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- CN214100875U CN214100875U CN202022783053.9U CN202022783053U CN214100875U CN 214100875 U CN214100875 U CN 214100875U CN 202022783053 U CN202022783053 U CN 202022783053U CN 214100875 U CN214100875 U CN 214100875U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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Abstract
The utility model discloses a system for utilize heat supply network energy storage to improve heating period electric wire netting peak load modulation performance, including unit load detection module, fast switch valve opening module, unit load analysis control module, pressure detection module, fuel supply module, heat supply unit, heat supply network energy storage equipment, heat supply module, fast change control module and become control module slowly before the machine. The utility model discloses can be through to unit AGC, coordinated control system optimizes, the debugging, make unit load lifting/lowering rate and primary frequency modulation performance obtain showing and promote, whole control system moves in coordination, fuel, a wind, feedwater, the desuperheating water, the complementary motion in coordination of condensate advantage, the reinforcing adapts to load instruction, fuel quantity, the ability that the operation mode changes, can accept more renewable energy and insert the electric wire netting improving electric wire netting dispatch capacity, when accepting the new forms of energy electric quantity in a large number, the system still has reliable peak regulation frequency modulation ability simultaneously.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a technical field of electric wire netting frequency modulation, especially a system for utilize heat supply network energy storage to improve heating period electric wire netting peak load modulation performance's technical field.
[ background of the invention ]
In recent years, with the rapid development of the electric power industry in China, the scale of a power grid is continuously enlarged, the installed capacity is rapidly increased, the peak-to-valley difference of the power grids in all regions in the country is larger, the electric energy quality and the safe operation of the power grid are greatly influenced, and the scheduling operation is difficult to perform more and more. In order to solve the deep grid safety problem and standardize the scheduling operation of a grid-connected power plant, the arrangement of a power generation plan, technical parameters and maintenance of operation equipment, a relay protection device, a safety automatic device, scheduling communication and the like, in 2009, the national electric prisoner has planned two detailed rules, namely auxiliary service compensation and power plant grid-connected management detailed rules after two years of incubation. And the power-saving supervision and each local electric supervision bureau are required to combine the characteristics of the region, and the auxiliary service and operation management implementation rules of the grid-connected power plant in the region are formulated according to the spirit of the two documents of the national electric supervision agency. Northwest network regulation detail rules for implementation of auxiliary service management of grid-connected power plants and detail rules for implementation of grid-connected operation management are already put into operation in power plants in the whole region, comprehensive assessment is performed on the grid-related generator sets from operation management to performance indexes, higher requirements are provided for parameters of primary frequency modulation, AGC (automatic gain control) regulation rate, AGC regulation precision and the like of the generator sets, the generator sets are required to quickly respond to the load of a power grid in a coordination mode, the correct action rate and effect of the primary frequency modulation are guaranteed, and the assessment indexes of the two detail rules are met. Because the types of the units and the characteristics of the thermodynamic system are different, corresponding control strategies need to be adopted for optimizing and improving the different characteristics of the units, the high-performance indexes of a power grid need to be served, the stability of parameters such as pressure and steam temperature of the units needs to be considered, the safe operation of the units is guaranteed, the maximum potential of the units is excavated, and the units can better adapt to the implementation and the check of two detailed rules. The total installed capacity of a Xinjiang power grid is 8595.3 ten thousand kilowatts by 2017, wherein 5207.3 thousand kilowatts of a thermal power installed machine account for 60.6 percent of the total installed capacity, 645 thousand kilowatts of a water installed machine account for 7.5 percent of the total installed capacity, 1835.8 thousand kilowatts of a wind power installed machine account for 21.4 percent of the total installed capacity, and 907.2 thousand kilowatts of a photovoltaic installed machine account for 10.5 percent of the total installed capacity. In 2017, the maximum power load of the Xinjiang power grid in Xinjiang is only 2804.3 kilowatts, the problem of power supply and demand is obvious, according to the requirements of national new energy industry policies, the thermal power heat supply unit in Xinjiang mainly uses heat to fix power, and can only carry basic load meeting normal heat supply for a long time, so that the proportion of new energy in the power grid power supply is high, AGC and primary frequency modulation capability of new energy such as wind power, photovoltaic and the like are poor or even cannot be adjusted due to the influence of environmental and technical factors, and the adjustment is mainly performed through hydropower and thermal power units with low proportion basically. Because the proportion of new energy such as photovoltaic energy is large, the frequency of a power grid becomes very unstable, the primary frequency modulation of the unit is frequently operated, and the frequency of a host machine and the frequency of the power grid have large deviation, so that the primary frequency modulation has obvious hysteresis. Therefore, aiming at the particularity of the power grid in south China, the development of the treatment problem of primary frequency modulation and AGC control deviation caused by the method becomes significant, particularly after a large amount of wind power is connected to the power grid in winter, the peak-load and frequency-modulation potential of the heat supply unit is fully excavated to implement optimized scheduling on the power grid, more renewable energy sources are connected to the power grid, the peak-load and frequency-modulation capacity of the unit is improved, and the adjustment capacity of the power grid is guaranteed.
[ Utility model ] content
The utility model aims at solving the problem among the prior art, a system for utilizing heat supply network energy storage to improve heating period electric wire netting peak shaver frequency modulation performance is proposed, can be through to unit AGC, coordinated control system optimizes, the debugging, make unit load lifting/lowering rate and primary frequency modulation performance obtain showing and promote, whole control system moves in coordination, fuel, once wind, feedwater, the desuperheating water, the complementary motion in coordination of condensate advantage, reinforcing adaptation load instruction, fuel quantity, the ability that the operation mode changes, can accept more renewable energy and insert the electric wire netting improving electric wire netting scheduling capacity, simultaneously when accepting the new forms of energy electric quantity in a large number, the system still has reliable peak shaver frequency modulation ability.
In order to achieve the above object, the utility model provides a system for improving peak shaving and frequency modulation performance of a power grid during heating period by utilizing energy storage of a heat supply network, which comprises a unit load detection module, a fast switch valve opening module, a unit load analysis control module, a pre-machine pressure detection module, a fuel supply module, a heat supply unit, a heat supply network energy storage device, a heat supply module, a fast change control module and a slow change control module, wherein the unit load detection module is connected with the heat supply unit, the unit load detection module is connected with the unit load analysis control module, the unit load analysis control module comprises a fast change control module and a slow change control module, the slow change control module is connected with the fuel supply module, the fuel supply module is connected with the heat supply unit, the heat supply unit is connected with the pre-machine pressure detection module, the fast change control module is connected with the fast switch valve opening module, the heat supply network energy storage device is connected with the heat supply unit through the quick switch valve opening module, a heat supply module is arranged in the heat supply unit, and the heat supply module is connected with the heat supply network energy storage device.
Preferably, the unit load detection module uses a main transformer high-voltage side frequency signal of the unit as a primary frequency modulation action driving signal, and performs fast-changing data processing through a high-performance processor platform.
Preferably, a high-regulating-opening module is arranged in the heat supply unit, and the unit load detection module is connected with the high-regulating-opening module through a first process analysis module.
Preferably, a heat feedforward module is arranged in the heat supply network energy storage device and connected with the quick change control module.
Preferably, a power supply module is arranged in the heat supply unit and connected with the heat supply module.
Preferably, the slow-varying control module controls the fuel supply module in a fuel feed-forward manner.
Preferably, the pre-engine pressure detection module is connected to the fuel supply module through a second process analysis module.
Preferably, the energy storage mechanism of the heat supply network energy storage device comprises heat supply pipeline network system energy storage, boiler steam-water system energy storage and condensed water system energy storage.
The utility model has the advantages that: the utility model combines the unit load detection module, the unit load analysis control module, the pre-machine pressure detection module, the fuel supply module, the heat supply unit, the heat supply network energy storage device, the fast change control module and the slow change control module together, through experimental optimization, the unit AGC and the coordinated control system can be optimized and debugged, so that the unit load ascending/descending rate and the primary frequency modulation performance are obviously improved, the whole control system performs cooperative action, the fuel, primary air, water supply, temperature reduction water and condensed water have complementary cooperative action, the capability of adapting to load instructions, fuel quantity and operation mode change is enhanced, more renewable energy sources can be received and connected into the power grid when the power grid dispatching capacity is improved, and simultaneously, when a large amount of new energy electric quantity is received, the system still has reliable peak and frequency modulation capability, and the capacity of the heat supply unit is improved, the uncontrollable new power supply electric power with intermittent randomness such as more wind turbine generators, photovoltaic power stations and the like can be consumed, the fluctuation of new energy to the voltage, the current and the frequency of a power grid can be eliminated, the electric energy quality of the power grid is improved, the running cost of the power grid is saved, and meanwhile, the waste gas pollution discharged by various boilers can be reduced due to the effective utilization of the new energy, and the environmental protection pressure is relieved.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of a system for improving peak-load and frequency-modulation performance of a power grid during a heating period by utilizing energy stored in a heat supply network.
In the figure: the method comprises the following steps of 1-a unit load detection module, 2-a unit load analysis control module, 3-a pre-unit pressure detection module, 4-a fuel supply module, 5-a heat supply unit, 6-a heat supply network energy storage device, 7-a fast change control module, 8-a slow change control module, 9-a fast switch valve opening degree module, 10-a heat supply module, 11-a high regulating opening degree module, 12-a heat feedforward module, 13-a power supply module, 14-a first process analysis module and 15-a second process analysis module.
[ detailed description ] embodiments
Referring to fig. 1, the utility model relates to a system for improving peak shaving and frequency modulation performance of power grid during heating period by utilizing heat supply network energy storage, which comprises a unit load detection module 1, a unit load analysis control module 2, a fast switch valve opening degree module 9, a pre-machine pressure detection module 3, a fuel supply module 4, a heat supply unit 5, a heat supply network energy storage device 6, a fast change control module 7 and a slow change control module 8, wherein the unit load detection module 1 is connected with the heat supply unit 5, the unit load detection module 1 is connected with the unit load analysis control module, the unit load analysis control module 2 comprises a fast change control module 7 and a slow change control module 8, the slow change control module 8 is connected with the fuel supply module 4, the fuel supply module 4 is connected with the heat supply unit 5, the heat supply unit 5 is connected with the pre-machine pressure detection module 3, the fast change control module 7 is connected with the fast switch valve opening degree module 9, the heat supply network energy storage device 6 is connected with a heat supply unit 5 through a fast switch valve opening module 9, a heat supply module 10 is arranged in the heat supply unit 5, the heat supply module 10 is connected with the heat supply network energy storage device 6, the unit load detection module 1 adopts a unit main transformer high-voltage side frequency signal as a primary frequency modulation action driving signal and carries out fast change data processing through a high-performance processor platform, a high-adjustment opening module 11 is arranged in the heat supply unit 5, the unit load detection module 1 is connected with the high-adjustment opening module 11 through a first process analysis module 14, a heat feedforward module 12 is arranged in the heat supply network energy storage device 6, the heat feedforward module 12 is connected with a fast change control module 7, a power supply module 13 is arranged in the heat supply unit 5, the power supply module 13 is connected with the heat supply module 10, and the slow change control module 8 controls a fuel supply module 4 in a fuel feedforward mode, the pre-machine pressure detection module 3 is connected with the fuel supply module 4 through a second process analysis module 15, and the energy storage mechanism of the heat supply network energy storage device 6 comprises heat supply pipeline network system energy storage, boiler steam-water system energy storage and condensed water system energy storage.
The utility model combines the unit load detection module 1, the unit load analysis control module 2, the pressure detection module 3 in front of the unit, the fuel supply module 4, the heat supply unit 5, the heat supply network energy storage device 6, the fast change control module 7 and the slow change control module 8 together, through test optimization, the unit AGC and the coordinated control system can be optimized and debugged, so that the unit load ascending/descending rate and the primary frequency modulation performance are obviously improved, the whole control system performs cooperative action, the fuel, primary air, water supply, temperature reduction water and condensed water have complementary cooperative action, the capacity of adapting to load instructions, fuel quantity and operation mode change is enhanced, more renewable energy sources can be received and connected into the power grid when the power grid dispatching capacity is improved, and simultaneously, when a large amount of new energy is received, the system still has reliable peak and frequency modulation capacity, and the peak modulation capacity of the heat supply unit 5 is improved, the uncontrollable new power supply electric power with intermittent randomness such as more wind turbine generators, photovoltaic power stations and the like can be consumed, the fluctuation of new energy to the voltage, the current and the frequency of a power grid can be eliminated, the electric energy quality of the power grid is improved, the running cost of the power grid is saved, and meanwhile, the waste gas pollution discharged by various boilers can be reduced due to the effective utilization of the new energy, and the environmental protection pressure is relieved.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (8)
1. A system for improving peak load and frequency modulation performance of a power grid in a heating period by utilizing energy storage of a heat supply network is characterized in that: the system comprises a unit load detection module (1), a unit load analysis control module (2), a fast switch valve opening module (9), a pre-unit pressure detection module (3), a fuel supply module (4), a heat supply unit (5), a heat supply network energy storage device (6), a fast change control module (7) and a slow change control module (8), wherein the unit load detection module (1) is connected with the heat supply unit (5), the unit load detection module (1) is connected with the unit load analysis control module (2), the unit load analysis control module (2) comprises the fast change control module (7) and the slow change control module (8), the slow change control module (8) is connected with the fuel supply module (4), the fuel supply module (4) is connected with the heat supply unit (5), the heat supply unit (5) is connected with the pre-unit pressure detection module (3), fast become control module (7) and fast switch valve opening module (9) and link to each other, heat supply network energy storage equipment (6) are connected with heat supply unit (5) through fast switch valve opening module (9), be provided with heat supply module (10) in heat supply unit (5), heat supply module (10) link to each other with heat supply network energy storage equipment (6).
2. The system for improving peak and frequency modulation performance of a power grid during a heating period by utilizing energy stored in a heat supply network as claimed in claim 1, wherein: the unit load detection module (1) adopts a main transformer high-voltage side frequency signal of the unit as a primary frequency modulation action driving signal, and fast-changing data processing is carried out through a high-performance processor platform.
3. The system for improving peak and frequency modulation performance of a power grid during a heating period by utilizing energy stored in a heat supply network as claimed in claim 1, wherein: the heat supply unit (5) is internally provided with a high-regulating-opening module (11), and the unit load detection module (1) is connected with the high-regulating-opening module (11) through a first process analysis module (14).
4. The system for improving peak and frequency modulation performance of a power grid during a heating period by utilizing energy stored in a heat supply network as claimed in claim 1, wherein: a heat feedforward module (12) is arranged in the heat supply network energy storage device (6), and the heat feedforward module (12) is connected with the quick change control module (7).
5. The system for improving peak and frequency modulation performance of a power grid during a heating period by utilizing energy stored in a heat supply network as claimed in claim 1, wherein: a power supply module (13) is arranged in the heat supply unit (5), and the power supply module (13) is connected with the heat supply module (10).
6. The system for improving peak and frequency modulation performance of a power grid during a heating period by utilizing energy stored in a heat supply network as claimed in claim 1, wherein: the slow-varying control module (8) controls the fuel supply module (4) in a fuel feed-forward manner.
7. The system for improving peak and frequency modulation performance of a power grid during a heating period by utilizing energy stored in a heat supply network as claimed in claim 1, wherein: the front pressure detection module (3) is connected with the fuel supply module (4) through a second process analysis module (15).
8. The system for improving peak and frequency modulation performance of a power grid during a heating period by utilizing energy stored in a heat supply network as claimed in claim 1, wherein: the energy storage mechanism of the heat supply network energy storage device (6) comprises heat supply pipeline network system energy storage, boiler steam-water system energy storage and condensed water system energy storage.
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| CN202022783053.9U CN214100875U (en) | 2020-11-26 | 2020-11-26 | System for improving peak load regulation and frequency modulation performance of power grid in heating period by utilizing energy storage of heat supply network |
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| CN202022783053.9U CN214100875U (en) | 2020-11-26 | 2020-11-26 | System for improving peak load regulation and frequency modulation performance of power grid in heating period by utilizing energy storage of heat supply network |
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