Auxiliary service pricing method for energy-storage power station participating in power system frequency modulation

An energy storage system and power system technology, applied in information technology support systems, instruments, business and other directions, can solve the problems of deepening the burden of power grid frequency regulation, prominent power grid frequency regulation problems, and high cost, so as to maximize capacity allocation and reduce storage costs. The effect of being able to invest the cost and ensure the balance of payments

Inactive Publication Date: 2016-12-14
NORTHEAST DIANLI UNIVERSITY +2
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Problems solved by technology

[0002] The integration of large-scale wind power into the power system weakens the inertia of the system, increases the frequency regulation burden of the power grid, and seriously affects the frequency stability of the power system; unlike synchronous generators, wind turbines are connected to the power system through four-quadrant converters, and the system frequency The speed phase is decoupled and does not have the ability to respond to system frequency changes, so the problem of frequency regulation in power grids ...

Method used

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  • Auxiliary service pricing method for energy-storage power station participating in power system frequency modulation
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  • Auxiliary service pricing method for energy-storage power station participating in power system frequency modulation

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specific example

[0073] Specific example: The measured data of a wind farm in Northeast China is used for analysis; the wind farm is equipped with 64 sets of G58-850kW double-fed induction wind turbines, and the rated power of the wind farm is P NWF =54.4MW; at this time, the rated power of the energy storage power station is ΔP ESS =4.352MW, rounded to 5MW, unit adjustment power K ESS =21.76MW / Hz; according to the power system frequency modulation time (including primary and secondary frequency modulation) is about 30min, therefore, the energy storage capacity E ESS =5MW×0.5h=2.5MW·h; energy storage system power-frequency characteristics such as figure 1 As shown; the sampling period of wind farm measured frequency data is 1 minute, and the data volume is 525,600, such as figure 2 shown;

[0074] Under the above example environment, the method of the present invention is used to price the annual frequency regulation power of the energy storage power station and its participation in freque...

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Abstract

The invention relates to an auxiliary service pricing method for an energy-storage power station participating in power system frequency modulation. The auxiliary service pricing method is characterized by comprising energy-storage-system synchronous-motor-like primary frequency modulation characteristic capacity configuration, energy-storage-system control and auxiliary service pricing determination with the energy-storage power station participating in the power system frequency modulation and the like. The capacity configuration can be maximized, the energy storage investment cost can be reduced, the auxiliary service pricing method is scientific and reasonable, and is high in applicability and good in effect, the energy storage capacity can be configured reasonably, and the balance of payment of the energy-storage power station can be ensured.

Description

technical field [0001] The invention relates to the technical field of new energy power generation, and relates to an auxiliary service pricing method for an energy storage power station participating in power system frequency regulation. Background technique [0002] The integration of large-scale wind power into the power system weakens the inertia of the system, increases the frequency regulation burden of the power grid, and seriously affects the frequency stability of the power system; unlike synchronous generators, wind turbines are connected to the power system through four-quadrant converters, and the system frequency The speed phase is decoupled and does not have the ability to respond to system frequency changes, so the problem of frequency regulation in power grids with high wind power penetration is becoming more and more prominent; [0003] The existing energy storage system is one of the important auxiliary means of frequency regulation. Due to its high cost, i...

Claims

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Application Information

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IPC IPC(8): G06Q30/02G06Q50/06
CPCY04S50/14G06Q30/0283G06Q50/06
Inventor 严干贵高凯葛延峰赵伟哲李军徽
Owner NORTHEAST DIANLI UNIVERSITY
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