Applications of Wind and Solar Energy DC Grid on Island

Ocean Engineering Equipment and Technology ›› 2014, Vol. 1 ›› Issue (3): 254-257.

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Applications of Wind and Solar Energy DC Grid on Island

Qiang MA¹, Li ZHANG¹, Gang XIAO¹, Ming CHEN², Ting-fu YAN³

1. CNOOC Research Center, Beijing 100027, China
2. Offshore Oil Engineering Co., Ltd., Tianjin 300451, China
3. CNOOC Shandong Chemical Engineering Co., Ltd., Ji'nan, Shandong 250101, China

Received:2014-08-05 Online:2014-09-20 Published:2016-03-30

Abstract

Abstract:

An independent direct current (DC) grid power system on an isolated island is constructed, bringing together three wind turbines and one set of solar power installation. With different combinations of the new energy power generation devices in the DC grid, the 600 V DC busbar and network solution is verified successfully. This wind and solar energy DC grid system ensures a higher conversion efficiency, and helps to protect the stability of the new energy power system and increase the output power quality. Ultimately, the overall requirements of the project can be satisfied. This research can provide solutions to the future new energy multi-power systems.

Key words: power system, direct current grid, wind and solar energy complementation, island

CLC Number:

Qiang MA, Li ZHANG, Gang XIAO, Ming CHEN, Ting-fu YAN. Applications of Wind and Solar Energy DC Grid on Island[J]. Ocean Engineering Equipment and Technology, 2014, 1(3): 254-257.

Figures/Tables 7

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Table 1

Table 2

测试项目		测试结果
直流输入	输入电压/V	358
	输入电流/A	129
	输入功率/kW	46.2
并网直流输入	输出电压/V	600
	输出电流/A	73.9
	输出功率/kW	44.3
	输出纹波电压/V	5
	输出纹波系数/%	0.83
DC/DC 测试	与EMS通信	正确
	与监控系统通信	正确
	远控功能	正确
	控制方式	自动:最大功率点跟踪 (MPPT)控制
	转换效率/%	96

测试项目		测试结果
直流输入	输入电压/V	382
	输入电流/A	70.4
	输入功率/kW	26.9
并网直流输入	输出电压/V	600
	输出电流/A	43.0
	输出功率/kW	25.8
	输出纹波电压/V	5
	输出纹波系数/%	0.83
DC/DC 测试	与EMS通信	正确
	与监控系统通信	正确
	远控功能	正确
	控制方式	自动:MPPT控制
	转换效率/%	96

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Applications of Wind and Solar Energy DC Grid on Island

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