| 引用本文: | 鲁业安,马 玲,张 磊,等.计及火电机组热储能的含风电系统柔性调度[J].电力系统保护与控制,2022,50(23):75-84. |
| LU Yean,MA Ling,ZHANG Lei,et al.Flexible dispatch of a power system with wind power considering thermal energystorage retrofit of thermal power units[J].Power System Protection and Control,2022,50(23):75-84 |
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| 摘要: |
| 风电快速增长的同时保持较高的弃风率，因为电力系统缺乏足够的柔性容量来应对风电的不确定性。锅炉最小稳定燃烧率限制了火电机组的运行柔性。抽汽和热储能可以在不改变锅炉燃烧率的情况下调节机组功率输出。因此，对现有的火电机组进行抽汽和热储能改造是一个很有前景的选择，以消纳电力系统中高渗透率的风电，特别是在以火电为主的系统中。研究了火电机组抽汽与热储能改造后的柔性运行。首先，考虑到改造后的特点和技术约束，提出一种新的火电机组线性运行模型。其次，建立基于随机机组组合和滚动经济调度的模型，研究含风电电力系统进行抽汽和热储能改造的效益。最后，在IEEE24节点系统中进行仿真。仿真结果表明：采用抽汽和热储能改造的火电机组，可以有效降低弃风量，提高电力系统运行经济性。 |
| 关键词: 风电 优化调度 电力系统 抽汽 热储能 |
| DOI：DOI: 10.19783/j.cnki.pspc.220122 |
| 分类号: |
| 基金项目:国家自然科学基金项目资助(51977054)；安徽高校自然科学研究项目资助(KJ2020A1098) |
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| Flexible dispatch of a power system with wind power considering thermal energystorage retrofit of thermal power units |
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LU Yean1, MA Ling2, ZHANG Lei3, WU Gang4
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(1. School of Electrical Engineering, Anhui Technical College of Mechanical and Electrical Engineering, Wuhu 241000, China;
2. School of Automobile and Rail, Anhui Technical College of Mechanical and Electrical Engineering, Wuhu 241000, China;
3. School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China;
4. China Electric Power Research Institute, Beijing 100192, China)
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| Abstract: |
| With the rapid growth of wind power, high wind curtailment rate is maintained because the power system lacks sufficient flexible capacity to cope with the wind power uncertainty. The minimum stable combustion rate of the boiler limits the operational flexibility of thermal power units. Steam extraction and thermal energy storage can adjust the power output of the unit without changing the combustion rate of the boiler. Therefore it is a promising choice to retrofit the existing thermal power units with steam extraction and thermal energy storage, so as to accommodate the high penetration of wind power in the power system, especially in a power system dominated by thermal power units. This paper studies the flexible operation of a thermal power unit retrofitted with steam extraction and thermal energy storage. First, a new linear operation model of retrofitted thermal power units is proposed considering the characteristics and technical constraints. Second, a model based on stochastic unit commitment and rolling economic dispatch is established to study the benefits of steam extraction and thermal energy storage in the power system with wind power. Finally, it is simulated in IEEE24-bus system. Simulation results show that the thermal power unit with steam extraction and thermal energy storage can effectively reduce wind curtailment and improve the operational economy of the power system.
This work is supported by the National Natural Science Foundation of China (No. 51977054). |
| Key words: wind power optimal dispatching power system steam extraction thermal energy storage |
