Power grid automatic voltage control simulation method based on continuous power flow simulation

A technology of automatic voltage and simulation method, which is applied in the direction of AC network voltage adjustment, AC network circuit, and AC network with the same frequency from different sources, etc. It can solve unreasonable voltage and reactive power control, power grid scheduling and adjustment of reactive power control parameters, etc. question

Active Publication Date: 2021-05-28
XINZHOU POWER SUPPLY COMPANY STATE GRID SHANXI ELECTRIC POWER
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Problems solved by technology

In practical applications, with the rapid construction of the power grid and the rapid changes in power consumption, the power grid dispatcher often cannot adjust the reactive power control parameters in time according to the load change of the power grid, and there are some problems of unreasonable voltage and reactive power control.

Method used

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  • Power grid automatic voltage control simulation method based on continuous power flow simulation
  • Power grid automatic voltage control simulation method based on continuous power flow simulation
  • Power grid automatic voltage control simulation method based on continuous power flow simulation

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Embodiment Construction

[0136] The grid automatic voltage control simulation method based on continuous power flow simulation proposed by the present invention, its flow chart is as follows figure 1 shown, including the following steps:

[0137] (1) Set the grid automatic voltage control period as T c ;

[0138] (2) From the historical section of automatic voltage control of the power grid, read the power grid model M and the 288-point ground state power flow section F of the set reference day i , forming the following two simulation files: F m，i Power grid 288 point operation mode file and F sch Grid mode adjustment data file, where:

[0139] 288-point power grid operation mode file F m，i The expression is:

[0140] f m，i =[i,i=1,..288]{Ld m，i , Un m，i , Bs m，i , Xf m，i , Dev m，i};

[0141] Among them, the subscript i is the sampling time, Ld m，i 、Un m，i 、Bs m，i 、Xf m，i and Dev m，i Respectively with the i-th sampling moment of the reference day (every 5 minutes is a sampling moment...

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Abstract

The invention belongs to the technical field of power grid dispatching, and particularly relates to a power grid automatic voltage control simulation method based on continuous power flow simulation. According to the method, a model and data of real-time operation of a power grid are utilized, closed-loop control of power grid data and an AVC strategy is formed through simulation load flow calculation from the perspective of the whole system, suggestions and guidance are given to an optimal reactive voltage adjustment scheme of the power grid through simulation data analysis, and real-time optimization control of the voltage is carried out in a continuous closed loop mode by taking voltage safety and high quality as constraints and taking system operation economy as a target. By continuously and cyclically executing the method, automatic control simulation of the reactive voltage of the power grid under various typical daily section conditions is realized, common reference and basis are provided for setting automatic voltage control parameters of the power grid under various load states, an automatic control strategy of the reactive voltage is optimized, and the automatic control level of the reactive voltage is improved.

Description

technical field [0001] The invention belongs to the technical field of power grid dispatching, in particular to a power grid automatic voltage control simulation method based on continuous power flow simulation. Background technique [0002] Automatic voltage control (hereinafter referred to as AVC, Automatic Voltage Control) system is an important means to achieve safe (improved voltage stability margin), economical (reduced network loss), and high-quality (improved voltage qualification rate) operation of the transmission network. The AVC system architecture is based on the grid energy management system (hereinafter referred to as EMS), which can use the real-time operation data of the transmission network to scientifically make the best reactive power and voltage adjustment plan from the perspective of overall optimization of the transmission network, and automatically send it to power plants and substations And the execution of the lower-level power grid dispatching orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06H02J3/16
CPCH02J3/06H02J3/16H02J2203/20Y02E60/00
Inventor 王建平吕晨旭高马平郭亮李庆良李万林黄少波张斌
Owner XINZHOU POWER SUPPLY COMPANY STATE GRID SHANXI ELECTRIC POWER
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