清洁能源主导系统频率峰值特性分析  

Analysis of Peak Frequency Characteristics of Asynchronous Grid Based on Clean Energy Generation

作　　者：吴问足 佘盛景 陈亦平[1] 杜旭[1] Wu Wenzu;She Shengjing;Chen Yiping;Du Xu(China Southern Power Grid Dispatching and Control Center,Guangzhou,Guangdong 510623,China;School of Electrical Engineering,Xi’an Jiaotong University,Xi'an,Shanxi 710049,China)

机构地区：[1]中国南方电网电力调度控制中心,广东广州510623 [2]西安交通大学电气工程学院,陕西西安710049

出　　处：《云南电力技术》2020年第2期21-25,共5页Yunnan Electric Power

基　　金：中国南方电网有限责任公司科技项目,项目编号:ZDKJXM20160001,项目名称:多片区异步互联电网调频策略仿真分析及优化研究。

摘　　要：以清洁能源为主的异步送端电网频率稳定问题较为严重。为研究异步送端电网频率峰值变化机理,进一步提升频率质量、优化调频资源的分配,本文提出了一种清洁能源主导调频系统频率峰值及峰值时间的简化计算模型,该模型主要包括水电调速器主导调频模型及直流频率限制器(Frequency Limit Controller,FLC)主导调频模型。大系统的时域仿真结果表明了该模型的可靠性和准确性。本文还进一步探究了风电等新能源参与调频的可行性并评估了在不同季节下风电参与调频对频率质量的改善情况。The frequency stability problem of the asynchronous grid based on clean energy generation is more serious.In order to study the mechanism of peak frequency in asynchronous grid,further improve the frequency quality and optimize the allocation of frequency adjustment resources,this paper proposes a simplified calculation model of the frequency peak and peak time of the asynchronous grid based on clean energy generation,which mainly includes the hydroelectric governor dominated model and the DC frequency limit controller(FLC)dominated model.The time domain simulation results of large grid show the reliability and accuracy of the model.This paper further explores the feasibility of new energy sources such as wind power participating in frequency adjustment and evaluates the improvement of frequency quality by wind power in different seasons.

关 键 词：清洁能源主导系统 频率峰值 简化模型 风电场一次调频 

分 类 号：TM74[电气工程—电力系统及自动化]