| 引用本文: | 胡殿刚,潘正婕,徐昊亮,等.大规模可再生能源并网条件下天然气机组调峰空间估算[J].电力系统保护与控制,2017,45(3):87-93. |
| HU Diangang,PAN Zhengjie,XU Haoliang,et al.Peaking capacity estimation of natural gas unit under the condition of large-scale renewable energy connecting with power grid[J].Power System Protection and Control,2017,45(3):87-93 |
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| 摘要: |
| 风能等可再生能源在系统中的占比逐步增大，对电力系统调峰提出了新的挑战。系统调峰容量的不足将严重影响系统安全稳定运行，同时也在很大程度上限制了可再生能源的消纳。鉴于天然气机组良好的调峰优势，主张燃机适合作为电网主要的调峰电源之一。建立燃气机组调峰空间估算模型，考虑风电等可再生能源发电和负荷的随机性对电力系统调峰需求的影响，引入条件风险价值(conditional value-at-risk，CVaR)理论对电力系统调峰容量的不确定性进行较好的风险控制。最后计及其他各类电源调峰能力，实现系统调峰容量的合理配置。通过对中国某地区系统实际情况进行算例分析，表明该模型能有效求出一定置信水平和调峰裕度下的燃气机组调峰空间，为电源规划提供参考。 |
| 关键词: 可再生能源 调峰需求 天然气机组 调峰空间估算 条件风险价值 |
| DOI：10.7667/PSPC160188 |
| 分类号: |
| 基金项目:能源基金会中国可持续能源项目(G-1406-21484) |
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| Peaking capacity estimation of natural gas unit under the condition of large-scale renewable energy connecting with power grid |
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HU Diangang1,PAN Zhengjie2,XU Haoliang3,JIN Panrun3
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(1. State Grid Gansu Electric Power Company, Lanzhou 730030, China;2. Yichang Electric Power Supply Company, State Grid Hubei Electric Power Company, Yichang 443000, China;3. Gansu Electric Power Company Economic Research Institute, Lanzhou 730050, China)
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| Abstract: |
| The proportion of renewable energy such as wind power in power system is increasing gradually, which puts forward a new peak shaving challenge for power system. The deficiency in peaking capacity will seriously harm the reliable and stable operation of power system, and limit the consumption of renewable energy to a large extent at the same time. In view of the good peaking advantage of natural gas units, this paper argues that the gas turbine is suitable to be worked as one of the main peaking power source in the grid. The estimation model of peaking capacity of gas unit is established, considering the impacts of random renewable energy generation, like wind power, and load on peak-shaving demand; conditional value-at-risk (CVaR) theory is introduced to do better risk control of the uncertainty of power system peaking capacity; finally, the rational allocation of system peaking capacity is realized, considering the peaking ability of all kinds of peaking power sources. An actual situation of the power system in a certain area is analyzed in China, and the result shows that the model can effectively calculate the peaking capacity of natural gas unit under a certain confidence level and margin of peak-shaving, and provide reference for power source planning. This work is supported by the China Sustainable Energy Program of Energy Foundation (No. G-1406-21484). |
| Key words: renewable energy peak-shaving demand natural gas unit peaking capacity estimation CVaR |
