• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2022, Vol. 43 ›› Issue (5): 100-108.doi: 10.12204/j.issn.1000-7229.2022.05.011

• Smart Grid • Previous Articles     Next Articles

Preventive Control Strategy of Cascading Failure Considering Security and Economy

DENG Huiqiong1,2(), LUO Jie1,2,3(), WANG Xiaoming1,2(), LIU Hao1,2(), LI Peiqiang1,2(), LI Chenchen1,2()   

  1. 1. School of Electronic, Electrical Engineering and Physics, Fujian University of Technology, Fuzhou 350108, China
    2. Fujian University Engineering Research Center for Simulation Analysis and Integrated Control of Smart Grid(Fujian University of Technology), Fuzhou 350108, China
    3. State Grid Yong’an Electric Power Company, Yong’an 366000, Fujian Province, China
  • Received:2021-12-02 Online:2022-05-01 Published:2022-04-29
  • Contact: DENG Huiqiong E-mail:1123233466@qq.com;550461238@qq.com;3417370895@qq.com;414299642@qq.com;lpqcs@hnu.edu.cn;1409469958@qq.com
  • Supported by:
    National Natural Science Foundation of Fujian Province(2018J01622)

Abstract:

To prevent the security problem of cascading failures caused by source faults, this paper proposes a preventative control strategy of cascading failure considering security and the economy. Firstly, according to the action characteristics of the relay protection, a mathematical form is given to discriminate the cascading failure. Secondly, the security and economy of the system are evaluated in terms of power grid security margin and operating cost of power generation, respectively. The initial failure is selected by the branch vulnerability assessment method to construct a preventive control model of cascading failure for different initial failures actions. The model is a two-layer optimization mathematical model. The inner model is solved by the particle swarm optimization algorithm to get the power grid security margin. The outer model is solved by the improved multi-objective particle swarm optimization algorithm to minimize generation cost and maximize power grid security margin. Finally, the calculated Pareto set is evaluated using fuzzy set theory to determine the optimal output strategy of generators. Simulation studies are conducted with the IEEE 39-bus system and IEEE 118-bus system to verify the feasibility of the proposed method in this paper.

Key words: power system, cascading failure, security, economy, preventive control

CLC Number: