中国电力 ›› 2018, Vol. 51 ›› Issue (9): 101-109.DOI: 10.11930/j.issn.1004-9649.201707084

• 电网 • 上一篇    下一篇

基于RTDS的电厂主变空充过程的仿真建模及功率振荡抑制策略

夏小军1, 马红星1, 顾秋斌1, 唐硕2, 林济铿2, 江伟3   

  1. 1. 福建福清核电有限公司, 福建 福清 350318;
    2. 同济大学 电子与信息工程学院, 上海 201804;
    3. 国网福建省电力有限公司电力科学研究院, 福建 福州 350007
  • 收稿日期:2017-07-12 修回日期:2018-01-12 出版日期:2018-09-05 发布日期:2018-09-20
  • 作者简介:夏小军(1973-),男,高级工程师,从事核电发电、电力系统运行与控制、变压器优化技术,E-mail:xiaxj@fqnp.com;马红星(1971-),男,高级技师,从事高电压技术、发电机变压器,E-mail:mahx@fqnp.com;顾秋斌(1985-),男,工程师,从事发电机励磁、电力电子、控制理论与控制工程,E-mail:guqb@fqnp.com;唐硕(1993-),男,硕士研究生,从事电磁暂态频率等值研究,E-mail:tangshuohappy@163.com;林济铿(1967-),男,博士,教授,从事状态估计研究和有源配电网分析,E-mail:mejklin@126.com
  • 基金资助:
    国家自然科学基金资助项目(51177107)。

Modelling and Simulation of No-load Transformer during Power Plant Charging and Mitigation Strategy of Power Fluctuation Based on RTDS

XIA Xiaojun1, MA Hongxing1, GU Qiubin1, TANG Shuo2, LIN Jikeng2, JIANG Wei3   

  1. 1. Fujian Fuqing Nuelear Power Co. Ltd., Fuqing 350318, China;
    2. College of Electronic and Information Engineering, Tongji University, Shanghai 201804, China;
    3. State Grid Fujian Electric Power Research Institute, Fuzhou 350007, China
  • Received:2017-07-12 Revised:2018-01-12 Online:2018-09-05 Published:2018-09-20
  • Supported by:
    This work is supported by National Natural Science Fundation of China (No.51177107).

摘要: 在发电机组正常投运期间,投运相邻机组主变压器会引起投运机组的功率波动。为了再现上述过程,构建了相应的仿真模型,仿真建模包括:基于实时数字仿真(RTDS)环境构建变压器UMEC模型、等值外部网络、发电机系统模型(包括发电机模型及励磁系统模型及调速系统模型),基于上述3部分模型,共同组成了变压器空充仿真系统,再现了实际系统空充变压器导致系统低电压及临近机组的功率波动过程;进而提出分相合闸方法,抑制变压器空充导致的母线电压的降落及临近机组的功率波动。仿真模型及抑制策略的正确性及有效性通过算例得到验证。

关键词: 主变压器, 空载充电, 实时数字仿真(RTDS), 仿真建模, 功率波动, 分相合闸

Abstract: Normally, putting on-load transformer of nearby generators into operation will lead to power fluctuations of on-line generators. To restage the accident, the paper proposes a simulation model, which includes the UMEC model of transformer in RTDS environment, the equivalent model of external network, and the model of power generation system (including generator, excitation control and speed control). These three parts constitute the no-load transformer energizing simulation system, which can be used to restage the accident where no-load energizing induces low voltage of bus and power fluctuation of nearby generators. Moreover, a method of phase-splitting is proposed to mitigate low voltage of bus and power fluctuation of nearby generators. The correctness and effectiveness of the proposed method is demonstrated and validated via case study.

Key words: main transformer, no-load charging, RTDS, modelling and simulation, power fluctuation, phase-splitting

中图分类号: