Energy storage system participated power grid secondary frequency control method and device

A technology of power grid frequency and energy storage system, which is applied in the direction of AC network load balancing, etc.

Active Publication Date: 2016-04-13
NORTH CHINA ELECTRICAL POWER RES INST +2
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Problems solved by technology

[0003] The embodiment of the present invention provides a method for the energy storage system to participate in the secondary frequency control of the power grid, which can well solve the problem of coordination and cooperation between the energy storage system and other units in the secondary frequency regulation

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  • Energy storage system participated power grid secondary frequency control method and device
  • Energy storage system participated power grid secondary frequency control method and device
  • Energy storage system participated power grid secondary frequency control method and device

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Embodiment Construction

[0083] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0084] In an embodiment of the present invention, a method for energy storage participating in the secondary frequency control of the power grid is provided, such as figure 1 As shown, the method includes:

[0085] Step 101: Monitor the grid frequency in real time. When the grid frequency deviates, control the grid frequency as follows. In the next command cycle, if the grid frequency still has a deviation, repeat all the following steps until the grid frequency does not change. Until there is a deviation:

[0086] Step 102: Determine the grid secondary frequency control requirement ARR;

[...

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Abstract

The invention provides an energy storage system participated power grid secondary frequency control method and device. The energy storage system participated power grid secondary frequency control method comprises the steps that power grid frequency is monitored, and power grid frequency is controlled when deviation of power grid frequency occurs: power grid secondary frequency control requirements ARR are determined; the participation factors of a frequency modulation unit are determined; a basic secondary frequency modulation instruction is determined according to the ARR and the participation factors; the additional secondary frequency modulation instruction of a power generator unit sharing the frequency modulation task of an energy storage unit is determined; the total frequency modulation instruction of the energy storage unit and the power generator unit which does not share the frequency modulation task of the energy storage unit is determined, and the total frequency modulation instruction is transmitted to the energy storage unit and the power generator unit which does not share the frequency modulation task of the energy storage unit; and the total frequency modulation instruction of the power generator unit sharing the frequency modulation task of the energy storage unit is determined, and the total frequency modulation instruction is transmitted to the power generator unit sharing the frequency modulation task of the energy storage unit so that power grid secondary frequency control can be realized. The problem of coordination and cooperation of an energy storage system and other units in the aspect of secondary frequency modulation can be greatly solved.

Description

technical field [0001] The invention relates to the technical field of grid frequency control, in particular to a method and device for an energy storage system participating in grid secondary frequency control. Background technique [0002] With the increase of power demand, the peak-to-valley difference of power grid load continues to increase, which puts forward higher requirements for power system frequency regulation, and requires more regulated power supplies with fast response. The frequency control in the traditional frequency modulation technology is to maintain the balance between the generated power and the load demand through the rapid increase and decrease of the output power. However, the generator has the disadvantages of slow response and low climbing rate, which leads to: 1) due to slow climbing, the scheduling target cannot be achieved quickly, so that re-scheduling can be realized quickly, so it cannot provide all regional control error corrections; 2) Ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28
CPCH02J3/28
Inventor 崔正湃吴林林孙荣富刘辉王靖然白恺王若阳李娜
Owner NORTH CHINA ELECTRICAL POWER RES INST
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