电测与仪表2026，Vol.63Issue(9)：23-32,10.DOI:10.19753/j.issn1001-1390.2026.09.003
面向新型电力系统的电网安全等效模型选择方法
Grid security equivalent model selection method for novel power system
摘要
Abstract
The proliferation of distributed generators in the power grid leads to a large number of new types of tran-sient perturbation events that may occur in the system,and the response of the traditional single-equivalent model to the new types of events cannot meet the requirements for safe operation of the power grid.To solve this problem,a set of equivalent models is considered to represent the power grid,each corresponding to a different operating state of the power grid.An adaptive method is proposed to automatically select the appropriate equivalent model under a specific time-level event.System dynamic events are classified as informative or non-informative based on predic-tion confidence intervals;informative events are used to update the candidate model structure,while non-informa-tive events are used for gray-box model parameter identification.The events are used to drive the model structure selection and updating,and the model correctness is verified by the fit between the predicted and actual dynamics of the model output.The selected and validated models can be used for system dynamic safety assessment.The pro-posed method is applied to a test system equipped with photovoltaic and wind power and the selection process of the optimal model is given,and the test results verify the effectiveness of the proposed method.关键词
模型选择/事件分类/新型电力系统/电网安全Key words
model selection/event classification/novel power system/grid security分类
信息技术与安全科学引用本文复制引用
郑广勇,陈钢,邓瑞麒,李永乐,丁勇,张峻诚..面向新型电力系统的电网安全等效模型选择方法[J].电测与仪表,2026,63(9):23-32,10.基金项目
中国南方电网有限责任公司科技项目(GDKJXM20198107) （GDKJXM20198107）
