电气工程学报 ›› 2023, Vol. 18 ›› Issue (3): 277-284.doi: 10.11985/2023.03.030

• 电力系统 • 上一篇    下一篇

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含SVC电力系统的IPEBS法暂态稳定分析*

胡继磊1(), 刘雪粲2(), 江宁强3, 葛晨阳1, 邱殿成1   

  1. 1.国网江苏省电力有限公司连云港供电分公司 连云港 222100
    2.国网江苏省电力有限公司徐州供电分公司 徐州 221000
    3.南京理工大学自动化学院 南京 210094
  • 收稿日期:2022-07-26 修回日期:2023-02-06 出版日期:2023-09-25 发布日期:2023-10-23
  • 作者简介:胡继磊,男,1995年生,硕士,助理工程师。主要研究方向为新能源发电与电力系统稳定控制。E-mail:njust_hujl@163.com
    刘雪粲,男,1995年生,硕士。主要研究方向为电力系统稳定与控制、电力电子技术在电力系统中的应用。E-mail:liuxuecan@hotmail.com
  • 基金资助:
    * 国家自然科学基金资助项目(51577092)

IPEBS Method for Transient Stability Analysis of Power System with SVC

HU Jilei1(), LIU Xuecan2(), JIANG Ningqiang3, GE Chenyang1, QIU Diancheng1   

  1. 1. State Grid Lianyungang Power Supply Company of Jiangsu Electric Power Co., Ltd., Lianyungang 222100
    2. State Grid Xuzhou Power Supply Company of Jiangsu Electric Power Co., Ltd., Xuzhou 221000
    3. School of Automation, Nanjing University of Science and Technology, Nanjing 210094
  • Received:2022-07-26 Revised:2023-02-06 Online:2023-09-25 Published:2023-10-23

摘要:

研究了含静止无功补偿器(Static var compensator,SVC)的多机电力系统的暂态稳定性。首先建立了含SVC的多机电力系统模型,并基于等效负荷概念,构造出含SVC的电力系统的能量函数,验证了能量函数在故障后单调下降的特性。将SVC势能用并网电压和功率表示,克服了SVC模型复杂给构建能量函数带来的困难。采用提出的能量函数,在修改的3机9节点系统和10机39节点系统中验证了迭代势能界面法(Iterative potential energy boundary surface,IPEBS)的有效性。计算结果表明,与时域仿真法相比较,所得故障临界清除时间(Critical clearing time,CCT)的误差较小。

关键词: 静止无功补偿器, 暂态稳定, 能量函数, 迭代势能界面法

Abstract:

The transient stability of multi-machine power system with static var compensator(SVC) is proposed. First, the multi-machine power system model with SVC is established. Then, based on the concept of equivalent load, the energy function of the power system with SVC is proposed. And it is verified for the monotonic decreasing property of the energy function after fault-clearing. The potential energy due to SVC is expressed by the voltage of the grid-connection point and the power injected into it, which overcomes the difficulty brought by the complicate structure of SVC. Using the proposed energy function, the transient stability is analyzed by the PEBS method. The iterative potential energy boundary surface method(IPEBS) is validated on a modified 3-machine 9-nodes system and 10-machine 39-nodes system. Compared with the time domain simulation, the calculation results show that the error of the critical clearing time(CCT) is down.

Key words: Static var compensator, transient stability, energy function, iterative potential energy boundary surface

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