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| Research on the Electric Grid Dispatch for Alleviating the Uncertainties Impact through Gas-Fired Cogenerations and Heat Pumps |
| Long Hongyu1, 2, Fu Lin2, Xu Ruilin3, Huang Yue4, Cui Hui4 |
1. Southwest University Chongqing 400715 China;
2. Tsinghua University Beijing 100084 China;
3. State Grid Chongqing Electric Power Co. Electric Power Research Institute Chongqing 401123 China;
4. China Electric Power Research Institute Beijing 100192 China |
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Abstract The electric grid suffers more and more uncertainty impacts. One arises from load forecasting; the other is from intermittence and volatility of wind power and photovoltaic power. In this article, a new dispatch proposal based on smart grid is presented, which can adjust the electricity and heating generation of power sources. Considering mass introduction of water source heat pumps and heating networks as heating storage infrastructure, the transportation distance of heating water between power sources and end users as well as the electric load for heat pumps is added in this mathematical model. The same electric load following is revealed with various coefficients of performance (COP). However, the bigger COP is, the better energy-saving effect is. With regards to the minimum fluctuation of equivalent power of intermittent power sources, the numerical simulation suggests that the dispatch proposal can smooth the equivalent output of intermittence power generation. Besides, the heating load of the remote distribution achieves better energy conservation, up to 3%.
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Received: 14 June 2014
Published: 30 October 2015
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2015, Vol. 30 
