含新能源接入的柔性直流电网启动策略及仿真

JI Yuke

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含新能源接入的柔性直流电网启动策略及仿真

更新时间：2025-08-13

- 含新能源接入的柔性直流电网启动策略及仿真
- Automation of Electric Power Systems Vol. 41, Issue 4, Pages: 98-104(2017)
- 作者机构：
  
  新能源电力系统国家重点实验室(华北电力大学),北京市,102206
- 作者简介：
- 基金信息：
- DOI：
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- Published：2017
- 稿件说明：
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JI Yuke. [J]. Automation of electric power systems, 2017, 41(4): 98-104.
DOI：

JI Yuke. [J]. Automation of electric power systems, 2017, 41(4): 98-104. DOI：

摘要

以新能源大规模接入为目标

以多端柔性直流输电技术为支撑

提出了一种用于汇集风能、太阳能等多种新能源的柔性直流电网拓扑。首先

设计了通用的直流电网启动策略

然后基于机电暂态计算结果为该直流网络设计了稳态运行工况

并针对性地模拟了直流线路单极接地故障、交流线路故障和风机大规模切除3种暂态运行工况。最后

在PSCAD/EMTDC仿真平台中搭建该直流电网模型

仿真验证了启动控制策略和稳态潮流分布

结合仿真波形对电网暂态特性进行了讨论和分析。

Abstract

Flexible high voltage direct current(HVDC)technology is an effective solution in building DC grid

transmiting large-scale power via long distance and grid connection of renewable energy. Aiming at large-scale renewable energy source grid connection

a flexible DC grid topology for integrating the renewable energy source(such as wind energy and solar energy)is proposed based on multi-terminal HVDC technology. Firstly

a general start-up control strategy for the DC grid is designed. Based on the PSS/E calculation results

a steady-state operating condition for the DC grid is designed. Specifically

DC pole to ground fault

AC fault and large-scale wind turbine tripping off are simulated and analyzed. Finally

the DC power grid model is simulated on the PSCAD/EMTDC platform. The start-up control strategy and the steady-state power flow distribution are verified by the simulation results. Combined with the simulation waveforms

the power grid transient characteristics are discussed. This work is supported by “Thousands of People Plan” Special Support Project of State Grid Corporation of China(No. SGRIzlsdgcjsyjsJS〔2014〕264).

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