Author(s)

Yanzhen Li, Bo Peng, Kaiqiang Cheng, Liangzi Li, And Pengfei Shen

Corresponding Author

Yanzhen Li

ABSTRACT

With a large number of distributed sources connected to the distribution network, it brings challenges to the safe and stable operation of the distribution network, so it is very urgent to study the accurate and real-time evaluation of the distribution network security. This paper presents a security evaluation method for distribution network based on situation awareness. First of all, the indexes which can accurately evaluate the distribution network security are choosen. Then the state estimation is used to obtain a more accurate state quantity of distribution network in the stage of situation understanding. Then, the basic data needed for the evaluation process are obtained by power flow calculation, and the evaluation indexes are calculated. Finally, the grey prediction model is used to get the data of the future state in the stage of situation forcasting. The simulation results of IEEE14 bus show that the proposed method can reflect the security of distribution network in real time and accurately

KEYWORDS

Distribution Network, Security, Situation Awareness