Configuration Method for Hydrogen-Electricity Hybrid Energy Storage System in Transmission Grid with High Proportion of PV and Wind Power Connection

doi:10.12204/j.issn.1000-7229.2022.11.009

Abstract

Abstract:

At present, the transmission grid with a high proportion of photovoltaic and wind power has a generally high rate of curtailment of wind and solar power. As a potential utility, the configuration of energy storage equipment is favored in current research. Aiming at the problem of energy storage configuration in the transmission network, this paper proposes a configuration method based on a two-layer programming model for the hydrogen-electric hybrid energy storage system in order to reduce the comprehensive cost and the curtailment rate of wind and solar energy. Firstly, the characteristics of the hydrogen-electricity hybrid energy storage system are modeled, and on this basis, a two-layer planning model for the power and capacity allocation of the hydrogen-electricity hybrid energy storage system in the transmission network is established. The upper-layer model aims to minimize the annual comprehensive cost after the energy storage is configured; the lower-layer model aims to minimize the curtailment rate of wind and solar energy. Then, according to the different characteristics of batteries and hydrogen energy storage, a hydrogen-electricity hybrid energy storage system coordination strategy is proposed. Finally, according to the nonlinear multi-objective characteristics of the model, the two-layer iterative particle swarm optimization algorithm is combined with power flow calculation to solve the model. In the simulation part, taking a transmission network with a high proportion of wind and solar power access as an example, the capacity and location of hydrogen-electricity hybrid energy storage system are optimized to verify the feasibility and effectiveness of the model and the proposed solution algorithm. Ultimately, the transfer ability of photovoltaic and wind power output in time series is improved, the consumption of high-carbon fossil energy is reduced, and the curtailment rate of wind and solar energy is reduced.

Key words: transmission grid, high proportion of photovoltaic and wind power connection, optimized configuration, hydrogen-electricity hybrid energy storage system, two-level programming model

CLC Number:

TM715

CHEN Ying, SHI Yongfu, ZHONG Hongming, WANG Xiang, LEI Xia, YIN Hongquan, LIU Xin. Configuration Method for Hydrogen-Electricity Hybrid Energy Storage System in Transmission Grid with High Proportion of PV and Wind Power Connection[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(11): 85-98.

Figures/Tables 16

Fig.1 Flow chart of distribution strategy mode switching of hydrogen-electricity HESS

Fig.2 80-node transmission grid structure in a certain area

Fig.3 The ideal output of photovoltaic and wind power

Fig.4 Local load power per hour

Fig.5 Delivered load power per hour

Table 1 List of costs and payback period for different scenarios

Table 2 Wind and PV curtailment rate and annual network loss in various scenarios

Fig.6 Amount of monthly abandoned wind and PV invarious scenarios

Fig.7 Spatial and temporal distribution of operating conditions of node 1 to 30 on typical days during the heating period

Fig.8 Spatial and temporal distribution of operating conditions of node 31 to 60 on typical days during non-heating period

Fig.9 Hydrogen-electricity HESS charge and discharge with or without coordination strategy

Fig.A1 Comparison of energy storage duration and capacity of different energy storage forms

Table A1 Various types of power station access nodes

Table A2 Battery storage configuration result in scenario 2

Table A3 Hydrogen energy storage configuration result in Scenario 3

Table A4 Hydrogen-electric HESS configuration result in scenario 4

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