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Power grid operation mode intelligent adjustment method and system

A technology for power grid operation and intelligent adjustment, which is applied in the direction of single-network parallel feeding arrangement, electrical components, circuit devices, etc.

Pending Publication Date: 2021-08-27
STATE GRID ZHEJIANG ELECTRIC POWER +2
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The power industry still lacks an effective method and tool to automate this process

Method used

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  • Power grid operation mode intelligent adjustment method and system
  • Power grid operation mode intelligent adjustment method and system
  • Power grid operation mode intelligent adjustment method and system

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Experimental program
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Effect test

Embodiment

[0145] In order to verify the effectiveness of the method of the present invention, the high-voltage power grid (220kv+) model in East China is taken as an object, and the power grid operation mode model is used to generate a future operation scheme. The model includes 6500 buses, 600 generators, 6000 lines and 4300 transformers. This grid planning model is provided in BPA format. The Jinhua sub-region of Zhejiang Power Grid is selected for case study. The "Jinhua" district grid has about 200 busbars and 170 transmission lines.

[0146] To train an effective reinforcement learning agent, the state space includes the main transmission line powers of the "Jinhua" partition. The control space consists of adjusting the active power output of all available generators near Jinhua. The control goal of training the SAC agent is to obtain the safe operation mode under the ground state and N-1 faults. In a power grid simulation environment, an AC power flow equation solving software...

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PUM

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Abstract

The invention discloses a power grid operation mode intelligent adjustment method and system, and the method comprises the steps: obtaining current power grid data, inputting the current power grid data to a predetermined power grid model considering security constraints for calculation, and extracting power grid operation state data according to a calculation result; inputting the power grid operation state data into a pre-trained intelligent agent to obtain an optimal generator control strategy which is a generator active power control signal; and adjusting a power grid operation mode according to the optimal generator control strategy. The method has the advantages that the feasible power grid operation condition is automatically searched under the condition of considering uncertainty by utilizing the pre-trained intelligent agent.

Description

technical field [0001] The invention relates to a method and system for intelligently adjusting the operation mode of a power grid, and belongs to the technical field of power grid regulation. Background technique [0002] In recent years, energy and environmental policies and standards have greatly promoted the vigorous development of green energy, and the penetration ratio of renewable energy in the grid has continued to increase. However, due to their intermittency, dynamicity, and randomness, integrating a large amount of such energy sources into the power grid poses great challenges to the safe and economical operation of the power system. In the existing methods, to formulate the future grid operation mode is to find the optimal grid operation mode considering various fault situations through large-scale numerical simulation. The process includes electricity demand forecasting, new line construction planning, maintenance and outage planning, generation unit planning, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06H02J3/48
CPCH02J3/06H02J3/48H02J2203/10H02J2203/20
Inventor 张静杨靖萍刁瑞盛尚秀敏叶琳杨滢周正阳周靖皓吕勤徐建平陈良亮周材
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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