异步联网后送端电网频率特性分析及高频切机方案  

Frequency Characteristics of Sending System under Asynchronous Interconnection and Corresponding Over Frequency Generator Tripping Scheme

作　　者：张丹 吴琛 周磊[2] ZHANG Dan WU Chen ZHOU Lei(Yunnan power grid Yunnan Power Dispatching Control Center, Kunming 650011 NARI Technology Development Co. Ltd., Nanjing 211100)

机构地区：[1]云南电力调度控制中心,昆明650011 [2]国电南瑞科技股份有限公司,南京211100

出　　处：《云南电力技术》2017年第4期133-138,共6页Yunnan Electric Power

摘　　要：2016年云南电网作为大送端,与南方电网之间实现了异步联网运行。异步联网后,云南电网的主要风险将是来自直流闭锁故障后导致的频率稳定问题。本文在分析异步联网后云南电网频率特性的基础上,通过研究对比影响频率稳定性不同因素,如调速器参数、负荷模型、故障类型,提出云南电网高频切机协调优化配置原则,以适应异步联网后多直流外送的情况。仿真不同故障情况下各种高频切机方案,在分析各个方案适应性的基础上,提出送端电网高频切机方案,以适应异步联网运行要求。2016 Yunnan power grid as the big end, and the southern power grid to achieve the asynchronous networking operation. After asynchronous networking, the main risk of Yunnan power grid will be the frequency stability problem caused by DC blocking fault. The in asynchronous network analysis based on the frequency characteristics of Yunnan power grid, through comparative study on the frequency stability of different factors, such as the governor parameters, load model and fault type proposed Yunnan power grid frequency cutting machine coordination principle of optimal allocation, in order to adapt to the asynchronous network after DC transmission. In order to meet the requirements of asynchronous operation, a high frequency cutting machine is proposed based on the analysis of the various schemes of different faults.

关 键 词：异步联网 频率稳定性 高频切机方案 

分 类 号：TM732[电气工程—电力系统及自动化]