改善受端电网调峰裕度的特高压直流外送风火协调调度

CUI Yang

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改善受端电网调峰裕度的特高压直流外送风火协调调度

更新时间：2025-08-13

- 改善受端电网调峰裕度的特高压直流外送风火协调调度
- Automation of Electric Power Systems Vol. 42, Issue 15, Pages: 126-132(2018)
- 作者机构：
  
  东北电力大学电气工程学院,吉林市,吉林省,132012
- 作者简介：
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- Published：2018
- 稿件说明：
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CUI Yang. [J]. Automation of electric power systems, 2018, 42(15): 126-132.
DOI：

CUI Yang. [J]. Automation of electric power systems, 2018, 42(15): 126-132. DOI：

摘要

本地消纳能力不足是导致国内“三北”等风电资源丰富地区严重弃风的主要原因之一，通过特高压直流输电通道实现风火联合外送，是大规模风电跨区消纳的有效途径。直流通道采用传统定功率运行方式，未充分考虑受端电网的负荷特性，直流外送风火电源仍有较大调峰潜力。文中在大风电场群出力特性分析的基础上，提出基于风电出力爬坡量累积曲线的最小配套火电容量的确定方法，并建立了综合考虑风电消纳和受端电网负荷变化的风火直流外送调度模型。利用CPLEX软件求解模型，并对所提方法进行仿真验证。结果表明，相对于传统调度模式，所提方法更能发挥特高压直流外送风火电源的调峰潜力，受端电网等效剩余负荷峰谷差、均方差显著减小，有效改善了受端电网的调峰裕度。

Abstract

The lack of local accommodation capacity is one of the main reasons of the severe wind curtailment in the “Three-North Area” and other regions with abundant wind power resources of China. The combined wind-thermal power transmission through the ultra-high voltage direct current(UHVDC)system is an effective way for the large-scale wind power cross-border accommodation. The load characteristics of the receiving-end power grid are not fully considered in the conventional operation mode of DC channel using the constant power model. The power sources with combined wind-thermal power transmission by DC channel still have a large peak-shaving potential. According to the characteristic analysis of power output of the large wind farm group

this paper proposes a method of determining the minimum matching thermal power capacity based on the climbing amount accumulated curve of wind power output. And a wind-thermal DC scheduling model is developed to comprehensively consider the demand of wind power accommodation and the load changing trend of receiving-end power grid. The model is solved by CPLEX software

and the method is verified by simulation. The results show that

compared with the conventional scheduling model

this method can make full use of the peak-shaving potential of power source with combined wind-thermal power transmission by UHVDC system

and the peak-valley difference and the mean square deviation of the residual load are significantly reduced. The peak-shaving margin of the receiving-end power grid is effectively improved.

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