Optimal Dispatch of Wind-photovoltaic-hydro-thermal Power System Based on CHP Units and Priority Given to Renewable Energy

doi:10.11985/2021.03.012

Abstract

Abstract:

With the improvement of the energy structure, large-scale integration of renewable energy into the grid, and effective coordination of the stable operation of various energy sources has become a new problem faced by power system dispatching. Considering the complementary power generation of wind, solar, water, and fire, giving priority to the consumption of renewable energy, meanwhile connecting with the actual problems of heating in the north, the cogeneration units are added to build a wind, solar, water and fire joint optimization scheduling model that contains cogeneration units and priority consumption of renewable energy. The particle swarm optimization algorithm based on natural selection mechanism is used to solve the model to avoid the algorithm falling into the local optimal solution. Through simulation analysis of typical summer and winter electrical load and thermal load in a certain area in the north, the feasibility of the constructed model and algorithm is verified.

Key words: Complementary power generation, renewable energy, CHP units, particle swarm optimization algorithm

CLC Number:

TM73

LIN Lin, GAO Xue, ZHEN Zhao. Optimal Dispatch of Wind-photovoltaic-hydro-thermal Power System Based on CHP Units and Priority Given to Renewable Energy[J]. Journal of Electrical Engineering, 2021, 16(3): 85-91.

Figures/Tables 8

References 15

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设备名称	参数	数值
热电联产机组	台数	4
	最大发电功率/MW	250
	最小发电功率/MW	150
	最大供热功率/MW	300
	运行成本系数a	0.004 4
	运行成本系数b	13.29
	运行成本系数c	39.00
	向上爬坡速率	50
	向下爬坡速率	50
风力发电机	台数	2 000
风力发电机	额定功率/kW	50
光伏电池组	组数	2 000
光伏电池组	额定功率/kW	25
水电机组	最大技术出力/MW	300
	夏季最大发电用水量/m³	85 400
	冬季最大发电用水量/m³	40 500
	夏季最小发电用水量/m³	8 000
	冬季最小发电用水量/m³	5 000

日负荷类型	总成本/万元
夏季典型日	48.9
冬季典型日	132.0