Capacity Configuration and Coordinated Operation Strategy in the Multi-station Integration Scenario

doi:10.12204/j.issn.1000-7229.2021.01.011

Abstract

Abstract:

In the scene of multi-station (electric vehicle charging station, 5G communication base station, data center, distributed photovoltaic power station, energy storage station) integration, in order to solve the problem of size optimization and coordinated operation under the constraints of site conditions, functional integration, business requirements, etc. Firstly, the resource demand of each station and the possible functional fusion points among stations are analyzed. And on the basis of this, in order to improve the utilization rate of spare space in the existing substation, we take every station as configuration objects. The configuration principle of each station is defined. And a scheme of functional integration among stations is proposed. Then, to support the function integration scheme, the optimal capacity configuration model and the coordinated control strategy among stations are established. Finally, YALMIP/CPLEX is used to solve the optimization model, and the effectiveness of configuration method and coordinated control strategy have been verified by a typical example.

Key words: multi-station integration, substation, data center, energy storage system, coordinated operation

CLC Number:

TM73

MA Huimeng, LI Xiangjun, JIA Xuecui. Capacity Configuration and Coordinated Operation Strategy in the Multi-station Integration Scenario[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(1): 96-104.

Figures/Tables 10

Table 1 Analysis of the integration function among stations

Fig.1 Flow chart of energy interaction among stations

Fig.2 Electrical topology of multi-station integration

Fig.3 Schematic diagram of energy storage station compatible with UPS service and price-difference arbitrage

Fig.4 Flow chart of coordinated operation strategy

Fig.5 Power supply of the whole station under normal condition

Fig.6 Power output and SOC of energy storage system under TOU price policy

Fig.7 Power supply of the whole station in case of grid power supply failure

Fig.8 Voltage waveform of the input-side of the inverter

Fig.9 Voltage and current waveforms on the load side

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