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Method and system for distributing PCS active power by energy storage AGC considering SOC sorting

A technology of active power and power, which is applied in the field of energy storage AGC distribution PCS active power considering SOC sorting, can solve the problems of out of control, no relevant basis for weighted value, unclear meaning of weighted value, etc., to achieve balance and reduce inconsistency. , Accurately control the effect of information

Pending Publication Date: 2021-10-22
STATE GRID HUNAN ELECTRIC POWER +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that the charge and discharge power and SOC balance are comprehensively considered in the form of weighting, so that the power is restricted by the SOC value during the charge and discharge process, and the final performance is that the battery consistency is better; the disadvantage is that there is no relevant basis for the weighted value used. , the meaning of different weighted values ​​is not clear, and it may lead to loss of control when the weighted value is at the extreme value
However, the above two commonly used algorithms cannot take into account the requirements of power charging and discharging, battery consistency, and SOC balance.

Method used

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  • Method and system for distributing PCS active power by energy storage AGC considering SOC sorting
  • Method and system for distributing PCS active power by energy storage AGC considering SOC sorting
  • Method and system for distributing PCS active power by energy storage AGC considering SOC sorting

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Embodiment Construction

[0032] Such as figure 1 As shown, the method for distributing the active power of the PCS by the energy storage AGC considering the SOC sorting in this embodiment includes:

[0033] 1) Obtain the SOC value of the battery corresponding to each PCS;

[0034] 2) sort the SOC values ​​of the batteries, and set the priority of each PCS according to the sorting of the SOC values;

[0035] 3) According to the priority of each PCS, the AGC delivery power is sequentially delivered to each PCS in combination with the maximum charging / discharging maximum power value of each PCS until the AGC delivery power is all allocated.

[0036] In this embodiment, steps 1) to 3) are based on the preset cycle t tick Timed execution. In this embodiment, a timer is specifically used to control the timing execution of steps 1) to 3), and the time of the timer is t, see figure 2 , after each round of step 3), if the timer time t>preset period t tick Then continue to return to step 1).

[0037] In ...

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Abstract

The invention discloses a method and a system for distributing PCS active power by energy storage AGC considering SOC sorting. The method comprises the following steps: acquiring an SOC value of a battery corresponding to each PCS; sorting the SOC values of the batteries, and setting the priority of each PCS according to the sorting of the SOC values; and sequentially issuing the AGC issuing power to each PCS according to the priority of each PCS in combination with the maximum chargeable / dischargeable power value of each PCS until the AGC issuing power is completely distributed. According to the method, the requirements of power charging and discharging, battery consistency and SOC balance can be considered, the consistency of the batteries and the balance of the SOC in the charging and discharging process are considered under the condition that power dispatching is met, the inconsistency of the batteries is reduced, and the most accurate control information is provided for a power dispatching department.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a method and system for distributing active power of a PCS (energy storage converter) by an energy storage AGC considering SOC sorting. Background technique [0002] The large-scale development of electrochemical energy storage puts forward higher and higher requirements for control equipment. As an important module for EMS to control the energy storage station system, AGC plays a key role in the reasonable distribution of active power and the stable operation of the whole station. Therefore, Its control algorithm has been paid more and more attention. At present, national standards and industry standards do not specify the requirements for energy storage AGC to allocate active power to PCS, and each equipment manufacturer proposes a power allocation algorithm suitable for its own product characteristics. Judging from the existing literature, the commonly used ...

Claims

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Application Information

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IPC IPC(8): H02J3/32H02J3/48H02J7/00
CPCH02J3/32H02J3/48H02J7/0048H02J7/0014
Inventor 李理贺晨洪权刘伟良熊尚峰蔡昱华吴晋波刘志豪龚禹生肖俊先李林山陈胜春曾林俊牟秀君吴雪琴张伦肖纳敏
Owner STATE GRID HUNAN ELECTRIC POWER
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