电工技术学报  2015, Vol. 30 Issue (20): 219-226    DOI:
电力系统经济调度 |
利用燃气机组和热泵减少不确定因素影响的电网调度
龙虹毓1,2,付林2,徐瑞林3,黄越辉4,崔晖4
1. 西南大学工程技术学院 重庆 400715;
2. 清华大学建筑学院 北京 100084;
3. 国网重庆市电力公司电力科学研究院 重庆 401123;
4. 中国电力科学研究院 北京 100192
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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摘要 电网运行因传统电力负荷预测的不确定性和光伏、风电等随机性电源规模导入而日益受到影响。基于智能电网调度系统,提出通过控制集中式供热、发电设备的热、电出力,并使分散式热泵与之相配合,让热力管网起到一个储热系统的效用。这样可以利用热、电传输特性存在的差异,在建模过程中将热源与终端用户之间的热水管道传输距离和热泵耗电负荷作为新的优化变量。针对电力负荷跟踪问题,①通过减小燃气机组的供热,增加了发电出力可调节范围,配合分散式热泵耗电供热所增加的电力负荷,可以等效改变电力负荷,跟踪目标负荷曲线;②不同热泵性能系数(COP)下的负荷跟踪效果一致,但COP越大节能效果越好。针对并网间歇性电源等效发电出力波动最小的目标函数,可以将热电联产机组和电厂侧集中式水源热泵构成联合热电源,增加其热、电的调节范围。计算结果表明:间歇性电源发电等效出力得到了有效平滑;不同空间分布的热负荷对平滑效果差异影响较小,但对于能耗有较大影响;远端型热负荷分布下节能效益最好,约为3%。
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龙虹毓
付林
徐瑞林
黄越辉
崔晖
关键词 电力负荷跟踪出力平滑燃气联合循环性能系数热负荷分布    
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%.
Key wordsLoad following    power smoothing    gas-fired combined cycle    coefficient of performance (COP)    heating load distribution   
收稿日期: 2014-06-14      出版日期: 2015-10-30
PACS: TM734  
基金资助:国家科技支撑计划(2015BAA01B01),国家自然科学基金(51176083)和中央高校基本业务费(XDJK2015A006)资助项目
通讯作者: 龙虹毓 男,1978年生,博士,博士后,副教授,研究方向为综合能源系统数学建模、最优规划及调度运行。   
作者简介: 付 林 男,1968年生,博士,博士后,教授,博士生导师,研究方向为基于热电联产的城市集中供热与热网运行。
引用本文:   
龙虹毓,付林,徐瑞林,黄越辉,崔晖. 利用燃气机组和热泵减少不确定因素影响的电网调度[J]. 电工技术学报, 2015, 30(20): 219-226. Long Hongyu, Fu Lin, Xu Ruilin, Huang Yue, Cui Hui. Research on the Electric Grid Dispatch for Alleviating the Uncertainties Impact through Gas-Fired Cogenerations and Heat Pumps. Transactions of China Electrotechnical Society, 2015, 30(20): 219-226.
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