| 引用本文: | 李东东,孙雅茹,徐 波,等.考虑频率稳定的新能源高渗透率电力系统最小惯量与一次调频容量评估方法[J].电力系统保护与控制,2021,49(23):54-61.[点击复制] |
| LI Dongdong,SUN Yaru,XU Bo,et al.Minimum inertia and primary frequency capacity assessment for a new energy highpermeability power system considering frequency stability[J].Power System Protection and Control,2021,49(23):54-61[点击复制] |
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| 摘要: |
| 随着新能源渗透率逐步提高，系统在大功率扰动下的频率稳定问题日益严峻，限制了系统新能源的消纳能力。为了合理规划新能源的接入容量，亟需对系统的最小惯量和一次调频容量进行评估。为此，针对大功率扰动下惯量响应与一次调频响应间的相互作用进行了研究。首先，以传统单机模型为基础，推导出了计及调频死区的频率响应过程表达式。然后，以扰动后的最低频率限值为动态频率稳定约束条件，建立了系统最小惯量与一次调频容量评估模型，估算了系统最小功频静态特性系数和最小惯性时间常数，计算并绘制了惯量响应和一次调频响应的功率曲线。最后，在DIgSILENT PowerFactory仿真软件中搭建了IEEE 10机39节点模型，验证了所提最小惯量与一次调频容量评估方法的准确性和研究价值。 |
| 关键词: 高渗透率电力系统 惯量响应 一次调频响应 频率稳定 |
| DOI：DOI: 10.19783/j.cnki.pspc.210245 |
| 投稿时间：2021-03-08修订日期：2021-05-10 |
| 基金项目:国家自然科学基金项目资助(51977128) |
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| Minimum inertia and primary frequency capacity assessment for a new energy highpermeability power system considering frequency stability |
| LI Dongdong,SUN Yaru,XU Bo,ZHANG Jiale,LIU Qiang |
| (1. College of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;
2. State Grid Shanghai Electric Power Company, Shanghai 200090, China) |
| Abstract: |
| With the gradual increase of new energy permeability, a system’s frequency stability problem under high power disturbance is increasingly serious. This limits the absorption capacity of the system's new energy. In order to reasonably plan the access capacity of new energy, it is necessary to evaluate the minimum inertia and primary frequency capacity of the system. Therefore, the interaction between inertia response and primary frequency response under high power disturbance is studied. First, based on the traditional stand-alone model, the expression of the frequency response process considering the frequency dead band is derived. Then, taking the minimum frequency limit after disturbance as the dynamic frequency stability constraint, minimum inertia and primary frequency capacity evaluation models are established, and the minimum power/frequency characteristic and inertia time constant of the system are estimated, and the power curves of inertia and primary frequency responses are calculated and plotted. Finally, the IEEE 10-machine 39-bus model is built in the simulation software of the DIgSILENT PowerFactory. The accuracy and research value of the method of minimum inertia and primary frequency capacity evaluation are verified.
This work is supported by the National Natural Science Foundation of China (No. 51977128). |
| Key words: high permeability power system inertia response primary frequency response frequency stability |
