The Operational Risk Assessment for Distribution Network with Distributed Generations

2017 2nd Asia Conference on Power and Electrical Engineering

能源学;电工学

Xie, Hua^1 ; Wu, Yaqi^1 ; Wang, Yifan^1 ; Sun, Qian^2 ; Ma, Jianwei^2

National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing

100044, China^1

State Grid HAEPC Electric Power Research Institute, Zhengzhou, China^2

关键词: Discontinuous output;    Operational risks;    Power System;    Probabilistic modeling;    Risk indicators;    Security and reliabilities;    Static security;    Stochastic load flow;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/199/1/012080/pdf
DOI  :  10.1088/1757-899X/199/1/012080

来源: IOP

【 摘 要 】

Distribution network is an important part of the power system and is connected to the consumers directly. Many distributed generations that have discontinuous output power are connected in the distribution networks, which may cause adverse impact to the distribution network. Therefore, to ensure the security and reliability of distribution network with numerous distributed generations, the risk analysis is necessary for this kind of distribution networks. After study of stochastic load flow algorithm, this paper applies it in the static security risk assessment. The wind and photovoltaic output probabilistic model are built. The voltage over-limit is chosen to calculate the risk indicators. As a case study, the IEEE 33 system is simulated for analyzing impact of distributed generations on system risk in the proposed method.