Integrated Optimal Configuration of Flexible Multi-state Switch and Distributed Generation in Distribution Network Considering Reliability Gain

doi:10.12204/j.issn.1000-7229.2022.06.010

Abstract

Abstract:

Flexible multi-state switch (FMS) has an important advantage in improving the operation control ability of distribution network and improving renewable energy access. The existing FMS planning methods in distribution network do not consider the coordinated configuration of FMS and distributed generation (DG) in detail, and the reliability improvement brought by FMS access is not considered. To this end, this paper considers the cooperative optimal operation of distribution network with FMS and DG in detail, fully takes into account the reliability benefits brought by FMS access, and constructs a two-level optimal configuration model based on nested optimization for sizing and siting of FMS and DG. Aiming at the complexity of solving two-level nested programming model, a model solving strategy based on the combination of improved particle swarm optimization and general algebraic modeling language (GAMS) is proposed. The effectiveness of the proposed model and method is verified on an improved IEEE 33-node example system. The results show that the proposed method has better economy than the traditional FMS planning method because it can reduce the annual comprehensive cost of distribution network to the greatest extent, and reduce the loss of users due to power failure.

Key words: flexible multi-state switch(FMS), distribution network, distributed generation(DG), two-level optimization, sizing and siting

CLC Number:

TM73

CHEN Zexi, WANG Pu, XIAO Wanfang, JIA Dongqiang, GENG Xinyang, YANG Li. Integrated Optimal Configuration of Flexible Multi-state Switch and Distributed Generation in Distribution Network Considering Reliability Gain[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(6): 93-100.

Figures/Tables 13

Fig.1 Multi-port FMS structure

Fig.2 Operation boundary of VSC

Fig.3 Model solving process

Fig.4 IEEE 33-node system

Table 1 Alternative locations for FMS and DRE

Table 2 Load category and blackout loss

Table 3 Economic parameters of FMS and DG

Fig.5 WT, PV and three types of load data

Fig.6 DG and load scenarios

Table 4 Probability of occurrence of each scenario

Table 5 Configuration results for three schemes

Table 6

Fig.7 Annual power loss of various loads under different schemes

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