| 引用本文: | 江 涵,岳程燕,严兴煜,等.高比例可再生能源系统惯量约束对灵活性分析的影响研究[J].电力系统保护与控制,2021,49(18):44-51.[点击复制] |
| JIANG Han,YUE Chengyan,YAN Xingyu,et al.Influence of system inertia on flexibility resource analysis for an interconnection system with a high proportion of intermittent renewable energy[J].Power System Protection and Control,2021,49(18):44-51[点击复制] |
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| 摘要: |
| 在风电、光伏等间歇式可再生能源大量接入系统的背景下，系统惯量降低造成的系统频率稳定问题越来越突出，在灵活性资源配置中有必要考虑系统惯量的影响。从系统灵活性分析的角度出发，首先介绍了高比例可再生能源接入后净负荷的特点以及基于系统发电机惯量和容量的系统惯量计算方法。然后，在此基础之上，基于系统最大频率变化率限制和最大功率变化量，提出了系统最低惯量的计算方法。最后结合灵活性的分析过程，提出了考虑最低惯量约束在灵活性分析中的考虑方法。该方法应用于灵活性资源优化过程中，可以改变系统低惯量状态下的灵活性资源配置，提高系统惯量，进而提高系统的频率稳定性，实现系统灵活性、频率特性的有机结合。 |
| 关键词: 灵活性资源 惯量 间歇式可再生能源 互联系统 |
| DOI：DOI: 10.19783/j.cnki.pspc.201381 |
| 投稿时间：2020-11-09修订日期：2021-01-12 |
| 基金项目:国家自然科学基金项目资助“多能协同的分布式可再生能源高比例消纳与高效利用”(51961135101) |
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| Influence of system inertia on flexibility resource analysis for an interconnection system with a high proportion of intermittent renewable energy |
| JIANG Han1,YUE Chengyan2,YAN Xingyu1,HOU Junxian2,LIU Shuran2,ZHAO Teng1 |
| (1. Global Energy Interconnection Development and Cooperation Organization (Global Energy Interconnection Group
Co., Ltd.), Beijing 100031, China; 2. ABB Power Grid Investment (China) Co., Ltd., Beijing 100016, China) |
| Abstract: |
| There are now many intermittent renewable energy sources such as wind power and PV being connected to the power system. This occasions a problem of system frequency stability caused by system inertia reduction which becomes increasingly prominent, and it is necessary to consider the influence of system inertia in flexible resource allocation. For system flexibility analysis, this paper introduces the characteristics of net load after a high proportion of renewable energy is connected and offers a calculation method of system inertia based on system generator inertia and capacity. Then, a calculation method for the lowest inertia of the system is proposed based on the maximum frequency change rate and maximum power change. Finally, combining with the process of flexibility analysis, a method to examine the minimum inertia constraint in flexibility analysis is proposed. This method is applied in the process of flexible resource optimization. This can change the flexible resource allocation in the low inertia state of the system, improve the inertia and the frequency stability of the system, and realize the combination of system flexibility and frequency characteristics.
This work is supported by the National Natural Science Foundation of China “Multi-Energy Collaboration based Distributed Renewable Energy High-Proportion Consumption and Efficient Utilization” (No. 51961135101). |
| Key words: flexibility resource inertia intermittent renewable energy interconnection system |
