Calculation Method for Maximum Allowable Access Capacity of Distributed PV in Active Distribution Network Considering Active Management and Demand-Side Management

doi:10.12204/j.issn.1000-7229.2021.05.005

Abstract

Abstract:

This paper proposes a method to calculate the maximum allowable access capacity of distributed photovoltaic (PV) generation in an active distribution network (ADN), in order to facilitate the usage of the distributed PV on the premise of system security and stability. The objective is to maximize the allowable access capacity of distributed PV. Several electrical constraints, including power flow equations, bus voltage limits, branch current limits, etc., are taken into account. Furthermore, active management (AM) and demand-side management (DSM) techniques including on-load voltage regulation, reactive power compensation, control of the battery energy storage system, network reconfiguration and load curtailment are applied to increase the access capacity under the worse uncertainty condition. A two-stage robust optimization model is established. The model can be decomposed into a master problem and a subproblem in the form of mixed integer second order cones, and solved by column-and-constraint generation algorithm. A case study is implemented on the modified IEEE 33-node system to verify the validation of the proposed model and algorithm. The maximum allowable access capacity of distributed PV can be obtained. The enhancement of the result is achieved through AM and DSM techniques.

Key words: active management, demand-side management, distributed photovoltaic generation, maximum allowable access capacity, robust optimization

CLC Number:

TM73

CAI Xiuwen, CHEN Maoxin, CHEN Gang, FANG Yichen, ZHANG Shenxi, CHENG Haozhong. Calculation Method for Maximum Allowable Access Capacity of Distributed PV in Active Distribution Network Considering Active Management and Demand-Side Management[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(5): 38-47.

Figures/Tables 7

Fig.1 The modified IEEE 33-node distribution network

Fig.2 Typical timing scenarios of distributed PV and load power

Table 1 Results of the maximum access capacity of distributed PV under different robust interval widths MW

Fig.3 On-off states of branches

Fig.4 State of charge and charging power of the battery

Table 2 Maximum access capacity of distributed PV under different AM-DSM combinations MW

Fig.5 Load curtailment curves

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