特高压直流闭锁后超（超）临界机组大频差控制策略

doi:10.11930/j.issn.1004-9649.2017.08.027.05

中国电力 ›› 2017, Vol. 50 ›› Issue (8): 27-31.DOI: 10.11930/j.issn.1004-9649.2017.08.027.05

特高压直流闭锁后超（超）临界机组大频差控制策略

费章胜¹, 卢宏林¹, 何永君², 归一数³

1. 淮沪煤电有限公司田集发电厂,安徽淮南 232098;
2. 中国电机工程学会,北京 100761;
3. 上海明华电力技术工程有限公司,上海 200090

收稿日期:2017-04-18 出版日期:2017-08-25 发布日期:2017-08-25
作者简介:费章胜（1982—）,男,安徽潜山人,工程师,从事发电厂热工控制工作。E-mail:154650746@qq.com

Primary Frequency Regulation of Large Frequency-Difference in Supercritical/Ultra-Supercritical Units After UHVDC Transmission System Block Fault

FEI Zhangsheng¹, LU Honglin¹, HE Yongjun², GUI Yishu³

1. Tianji Power Plant, Huaihu Coal &Power Co., Ltd., Huainan 232098, China;
2. Chinese Saciety for Electrical Engineering, Beijing 100761, China;
3. Shanghai Minghua Electric Power Technology & Engineering Co., Ltd., Shanghai 200090, China

Received:2017-04-18 Online:2017-08-25 Published:2017-08-25

摘要/Abstract

摘要： 特高压直流输电系统发生直流闭锁故障时,受电端电网瞬间损失功率必须依靠区域内电厂调频来弥补,火电机组的作用尤为关键,现阶段火电厂多为高参数大容量机组,机组的蓄能非常有限,电网直流闭锁故障引发的大频差一次调频动作时,火电机组一次调频贡献电量受到机组蓄能的影响,不利于电网事故的快速恢复,还可能引起电网频率的振荡。以目前比较典型的600 MW等级火电机组为例,在皖电东送田集电厂进行大频差时一次调频和协调控制策略的相关试验,研究优化方向,采用了形式多样的新型控制策略,改善机组协调控制和一次调频性能,提高事故状态下火电机组对电网的贡献度。

关键词: 火电机组, 协调控制, 一次调频, 直流闭锁, 大频差

Abstract: When the DC blocking fault occurs in the UHVDC transmission system, the instantaneous power loss in the receiving power grid relies on the power plant primary frequency regulation in the region for compensation, and the thermal power unit plays a very important role. Presently, most thermal power units are of high capacity and high parameters with very limited energy storage capacity. In the large frequency-difference primary frequency regulation triggered by the DC blocking failure of the power grid, the power contribution of the thermal power unit is affected by the energy storage of the unit, which is not conducive to the rapid recovery of the power grid accident and may cause grid frequency oscillation. In this paper, the Tianji Power Plant of Sending Power from Anhui to the East Project is taken as an example of the typical 600 MW thermal power units to conduct the testings on primary frequency regulation of large-frequency difference and the optimization of related coordination control strategies. A variety of new control strategies are adopted to improve the unit coordinated control and the primary frequency performance so as to increase the contribution of thermal power units to the power grid during faults.

Key words: thermal power generation unit, coordinated control, primary frequency regulation, UHVDC transmission system block fault, large frequency difference

中图分类号:

TM621
TK323

费章胜, 卢宏林, 何永君, 归一数. 特高压直流闭锁后超（超）临界机组大频差控制策略[J]. 中国电力, 2017, 50(8): 27-31.

FEI Zhangsheng, LU Honglin, HE Yongjun, GUI Yishu. Primary Frequency Regulation of Large Frequency-Difference in Supercritical/Ultra-Supercritical Units After UHVDC Transmission System Block Fault[J]. Electric Power, 2017, 50(8): 27-31.

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特高压直流闭锁后超（超）临界机组大频差控制策略

Primary Frequency Regulation of Large Frequency-Difference in Supercritical/Ultra-Supercritical Units After UHVDC Transmission System Block Fault

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特高压直流闭锁后超（超）临界机组大频差控制策略

Primary Frequency Regulation of Large Frequency-Difference in Supercritical/Ultra-Supercritical Units After UHVDC Transmission System Block Fault

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