| 引用本文: | 和 萍,方祺元,武小鹏,等.风光火打捆外送系统STATCOM-POD协调优化设计[J].电力系统保护与控制,2022,50(1):78-87.[点击复制] |
| HE Ping,FANG Qiyuan,WU Xiaopeng,et al.Coordinated optimization design of STATCOM-POD for a wind-PV-thermal-bundled power transmission system[J].Power System Protection and Control,2022,50(1):78-87[点击复制] |
|
| 摘要: |
| 风电和光伏与火电打捆外送是我国大型新能源基地电力外送的重要途径。针对风光火打捆外送系统低频振荡问题，提出一种基于静止同步补偿器附加功率振荡阻尼控制协调优化设计策略。首先，搭建了风光火打捆外送系统模型，设计了STATCOM-POD控制器，并采用联络线有功功率作为控制器输入量。然后，基于李雅普诺夫稳定法则构建了计及系统所有低频振荡模式最小阻尼比的目标函数。最后，采用遗传算法对多控制器参数进行协调优化，改善了系统低频振荡特性。以IEEE四机二区域系统为例，验证所提方法的正确性和有效性。结果表明：协调优化参数的STACOM-POD控制器能够维持发电机转速的稳定，增加系统的阻尼，抑制低频振荡引起的电网参数波动，改善风光火打捆外送系统的低频振荡特性。 |
| 关键词: 风光火打捆外送 协调优化 阻尼特性 STATCOM-POD 低频振荡 |
| DOI：DOI: 10.19783/j.cnki.pspc.210215 |
| 投稿时间：2021-03-02修订日期：2021-07-27 |
| 基金项目:国家自然科学基金项目资助(51607158)；河南省科技攻关研究项目资助(202102210305)；郑州轻工业大学重点培育计划项目资助(2020ZDPY0204) |
|
| Coordinated optimization design of STATCOM-POD for a wind-PV-thermal-bundled power transmission system |
| HE Ping,FANG Qiyuan,WU Xiaopeng,TAO Yukun,GONG Zhijie |
| (College of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China) |
| Abstract: |
| Wind and PV power bundled with thermal power and then transmitted is an important approach to delivering power for large renewable power bases. There is a low-frequency oscillation problem of the wind-PV-thermal-bundled power transmission system. Thus a coordinated optimization design strategy based on STATCOM additional POD control is proposed. First, the model of the wind-PV-thermal-bundled power system is built, and the STATCOM-POD controller is designed. The active power of the tie-line is used as the input of the controller. Secondly, based on the Lyapunov stability method, the objective function considering the minimum damping ratio of all low-frequency oscillation modes is constructed. Finally, a genetic algorithm is used to coordinate and optimize the multiple controller parameters to improve the low-frequency oscillation characteristics of the system. With the IEEE 4-machine 2-area system as an example, the correctness and effectiveness of the proposed method are verified. The results show that the stability of the generator speed can be maintained using the STACOM-POD controller with optimized parameters, the system damping is increased, the fluctuation of power network parameters caused by low frequency oscillation is suppressed, and the low-frequency oscillation characteristic of the wind-PV-thermal-bundled power transmission system is improved.
This work is supported by the National Natural Science Foundation of China (No. 51607158). |
| Key words: wind-PV-thermal-bundled power transmission coordinated optimization damping characteristic STATCOM-POD low-frequency oscillation |
