A dynamic reactive power planning method and related devices for a wind power access system

A connected system and dynamic technology, applied in the direction of circuit devices, wind power generation, electrical components, etc., can solve problems affecting the life of low-voltage switches, poor system flexibility and stability, etc., achieve flexible and reliable reactive power planning scheme, reduce investment The effect of cutting times and ensuring voltage stability

Active Publication Date: 2022-03-04
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

[0004] This application provides a dynamic reactive power planning method and related devices for wind power access systems, which are used to solve the problem of frequent switching of low-voltage compensation equipment in existing wind power technologies, which not only affects the life of low-voltage switches, but also leads to poor system flexibility and stability. technical issues

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  • A dynamic reactive power planning method and related devices for a wind power access system
  • A dynamic reactive power planning method and related devices for a wind power access system
  • A dynamic reactive power planning method and related devices for a wind power access system

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Embodiment 1

[0045] For ease of understanding, see figure 1 , Embodiment 1 of a dynamic reactive power planning method for a wind power access system provided by the present application, including:

[0046] Step 101. Perform cluster analysis on the daily wind power output data to obtain several wind power output scenarios.

[0047] The daily wind power output data is the wind power output data 24 hours a day. The purpose of cluster analysis is to divide these daily wind power output data into multiple wind power output scenarios.

[0048] Furthermore, before step 101, all daily wind power output data within one year of the preset year of the wind power access system need to be obtained. The preset year is set according to the actual situation, and a year is calculated as 365 days, and the daily wind power output data of each day is recorded. In addition, basic system data can also be obtained according to research needs, such as offshore wind power access system data, mainly including syst...

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Abstract

This application discloses a dynamic reactive power planning method and related devices for a wind power access system, which clusters and analyzes daily wind power output data to obtain multiple wind power output scenarios; optimizes switching of low-voltage compensation equipment in wind power output scenarios Through simulation calculation, the dynamic reactive power compensation scheme consisting of switching times of low-voltage compensation equipment and dynamic reactive power compensation capacity is obtained; the dynamic reactive power compensation scheme is planned and evaluated, and the optimal dynamic reactive power compensation scheme is obtained; according to the optimal dynamic reactive power The time series power flow calculation and dynamic calculation of the power compensation scheme are carried out to obtain the voltage fluctuation range of the PCC point; if the voltage fluctuation range of the PCC point does not meet the preset voltage fluctuation conditions, the dynamic reactive power compensation scheme is updated and re-evaluated until the preset voltage fluctuation conditions are met , to get the optimal dynamic reactive power compensation scheme. It solves the technical problem that the frequent switching of low-voltage compensation equipment in the existing wind power technology not only affects the life of the low-voltage switch, but also leads to poor system flexibility and stability.

Description

technical field [0001] The present application relates to the technical field of power systems, in particular to a dynamic reactive power planning method and related devices for a wind power access system. Background technique [0002] my country's coastal areas are rich in offshore wind power resources. Compared with onshore wind power, offshore wind power has less impact on the environment and is more conducive to centralized development. Therefore, offshore wind power has developed rapidly in recent years. At present, offshore wind power mostly realizes grid-connected operation through AC submarine cables, which has disadvantages such as large charging power and complex voltage regulation; in addition, considering the characteristics of offshore wind power fluctuations, active power fluctuations have a certain impact on system voltage, in order to make the grid-connected point voltage meet the Relevant standards require that while offshore wind power participates in dyna...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/1871H02J2203/20H02J2203/10Y02E10/76
Inventor 金楚吴伟杰王新宝李作红葛景杨燕徐蔚韩连山郑敏嘉李猛彭勃
Owner GUANGDONG POWER GRID CO LTD
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