Generator Failure Dependent Adaptive Event-triggered Load Frequency Control in Interconnected Power Systems

ZHANG Yajian; ZHANG Jiafang; PENG Chen; YANG Ting; XUE Fei; ZHANG Xipeng

doi:10.13334/j.0258-8013.pcsee.242093

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Generator Failure Dependent Adaptive Event-triggered Load Frequency Control in Interconnected Power Systems

更新时间：2026-10-12

- Generator Failure Dependent Adaptive Event-triggered Load Frequency Control in Interconnected Power Systems
- Vol. 46, Issue 9, Pages: 3593-3605(2026)
- 作者机构：
  
  1. 1 上海大学机电工程与自动化学院，上海市宝山区,200444
  2. 2 天津大学电气自动化与信息工程学院，天津市南开区,300072
  3. 3 西安交通大学电气工程学院,陕西省,西安市,710049
  4. 4 国家电网华东分部，上海市浦东新区,200120
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.242093
  CLC：
- Received：05 May 2026，
  
  Published：2026
- 稿件说明：
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ZHANG Yajian, ZHANG Jiafang, PENG Chen, et al. Generator Failure Dependent Adaptive Event-triggered Load Frequency Control in Interconnected Power Systems[J]. 2026, 46(9): 3593-3605.
DOI：

ZHANG Yajian, ZHANG Jiafang, PENG Chen, et al. Generator Failure Dependent Adaptive Event-triggered Load Frequency Control in Interconnected Power Systems[J]. 2026, 46(9): 3593-3605. DOI： 10.13334/j.0258-8013.pcsee.242093.

摘要

构件老化、接触不良等引发的发电机间歇性故障将危及电网频率稳定。为此，提出一种基于自适应事件触发的负荷频率控制(load frequency control，LFC)方案。首先，由于发电机故障的直接后果为有功出力无法达到期望水平，根据故障程度将LFC系统划分为若干运行场景；其次，设置自适应事件触发检测器(event-triggered detector，ETD)，仅当发电机故障或LFC性能退化到预设阈值以下才上报状态量并更新控制参数；随后，由于ETD与控制中心间的通信延时无法实现控制参数与实际运行场景的同步匹配，将发电机间歇故障下的LFC系统描述为异步切换模型；最后，基于平均驻留时间技术，推导了控制参数设计约束以及更新准则。仿真算例表明，较之于传统事件触发方案，所提方法对于区域控制误差的阻尼性能可提升15.16%以上。

Abstract

Intermittent generator failures caused by such as equipment aging and poor contact may threaten the frequency stability of power systems. In this paper

an adaptive event-triggered load frequency control(LFC) scheme is proposed. First

considering that the consequence of a generator failure is that the active generation cannot reach the expected level

a series of operating scenarios are preset according to the degrees of failure. Then

this paper esablishes an adaptive event-triggered detector(ETD) is to upload the statuses and update the control parameters only when generator failure occurs or the LFC performance degrades below a preset threshold. Furthermore

considering that the synchronously matching between the control parameters and actual operation scenarios cannot be achieved due to the communication delays between ETD and control center

the LFC system under intermittent generator failures is described as an asynchronous switched model. Finally

based on the average dwell time technique

the control parameter design constraints and updating criteria have been deduced. Simulation results have shown that compared with traditional event-triggered schemes

the proposed method can improve the damping performance of area control errors by more than 15.16%.

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