多区域互联电力系统双信道动态事件触发自适应负荷频率控制

发电技术

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多区域互联电力系统双信道动态事件触发自适应负荷频率控制

何锐¹，梁智²，向阳²，张雨欣³，杨超³，王涛^3*，周成宇³

1.国网四川省电力公司，四川省成都市 610041；2.国网四川省电力公司超高压分公司，四川省成都市 610041；3.重庆理工大学电气与电子工程学院，重庆市巴南区 400054

基金资助:
重庆市教育委员会科学技术研究项目(KJQN202401150)。

Dual-channel Dynamic Event-triggered Adaptive Load Frequency Control for Multi-area Interconnected Power Systems

HE Rui¹, LIANG Zhi², XIANG Yang², ZHANG Yuxin³,YANG Chao³, WANG Tao^3*, ZHOU Chengyu³

1.State Grid Sichuan Electric Power Company, Chengdu 610041, Sichuan Province, China; 2. State Grid Sichuan Ultra High Voltage Company, Chengdu 610041, Sichuan Province, China; 3. School of Electrical and Electronic Engineering, Chongqing University of Technology, Banan District, Chongqing 400054, China

Supported by:
Project Supported by Scientific Research Project of the Chongqing Municipal Education Commission (KJQN202401150).

摘要/Abstract

摘要： 【目的】多区域互联电力系统存在复杂动态特性与网络资源有限性的问题，可能引发电力系统震荡风险。为此，提出一种双信道动态事件触发自适应负荷频率控制方案。【方法】首先，基于电力系统运行产生的输入输出数据，利用动态线性化技术构建与原系统等价的电力系统数据模型；其次，利用该数据模型通过梯度下降算法设计自适应的频率控制器，动态地调整控制参数；然后，在控制器的输出信道和输入信道同时设置动态事件触发条件，减少输出信息的传输频率和控制输入的更新次数；最后，在三区域互联电力系统中进行仿真验证。【结果】与传统固定增益PID控制策略相比，所提出的控制策略在跟踪性能和网络资源利用方面均取得了显著提升，验证了其优越性与实用性。【结论】提出的控制方案同时解决了网络资源受限与系统动态特性复杂的难题，为多区域互联电力系统的安全经济运行提供了保证。

关键词: 多区域互联电力系统, 自适应控制, 双信道动态事件触发, 负荷频率控制, 梯度下降算法, 动态线性化, 数据驱动, 网络化控制

Abstract: [Objectives] The multi-area interconnected power system has the problem of highly complex dynamic characteristics and the limited network resources, which may cause the risk of power system oscillation. To this end, a dual-channel dynamic event-triggered adaptive load frequency control scheme is proposed. [Methods] Firstly, based on the input and output data generated by power system operation, the power system data model equivalent to the original system is constructed by using dynamic linearization technology. Secondly, the data model is used to design an adaptive frequency controller through the gradient descent algorithm, and the control parameters are dynamically adjusted. Then, the dynamic event-triggered condition is set in the output channel and the input channel of the controller at the same time, so as to reduce the transmission frequency of the output information and the update times of the control input. Finally, simulation verification is carried out in a three-area interconnected power system. [Results] The simulation results show that compared with the traditional fixed gain PID control strategy, the proposed control strategy has achieved significant improvement in tracking performance and network resource utilization, which verifies its superiority and practicability. [Conclusions] The proposed control scheme solves the problems of limited network resources and complex dynamic characteristics of the system, and provides a guarantee for the safe and economic operation of the multi-area interconnected power system.

Key words: multi-area interconnected power system；adaptive control；dual-channel dynamic event-triggered；load frequency control, gradient descent algorithms, dynamic linearization, data-driven, networked control

何锐, 梁智, 向阳, 张雨欣, 杨超, 王涛, 周成宇. 多区域互联电力系统双信道动态事件触发自适应负荷频率控制[J]. 发电技术.

HE Rui, LIANG Zhi, XIANG Yang, ZHANG Yuxin, YANG Chao, WANG Tao, ZHOU Chengyu. Dual-channel Dynamic Event-triggered Adaptive Load Frequency Control for Multi-area Interconnected Power Systems[J]. Power Generation Technology.

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