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| A power supply solution during large scale lasting disasters |
| Wei Qiang1, Yang Gengjie1, Zhu Feng2, Guo Moufa1, Liu Yiran1 |
1. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108;
2. Rundian Energy Science and Technology Co., Ltd, Zhengzhou 450000 |
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Abstract It’s of utmost importance to restore electric power supply after natural disaster happens. How to restore power supply to civilian is discussed in this paper. Since power demand is relatively small in emergency situation, this demand can be supplied by distributed generation only. However, losses in transformer will increase at that time. So providing power at night only is advised to decrease losses. A demand control device, which fulfill P/f droop characteristic, is also provided in this paper. The device will change user demand according to frequency deviation. Unbalance can be avoided and better frequency quality can be achieved by using this device. The demand cutting strategy is also fair to all load involved.
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Received: 05 February 2020
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2020, Vol. 21 
