远距离大容量特高压直流送电暂态稳定性控制研究  

A Study on the Transient Stability Control of Long Distance and Large Capacity UHVDC Power Transmission

作　　者：廖修谱 高嘉[1] 刘晨 李志龙[1] 段松涛[2] LIAO Xiupu;GAO Jia;LIU Chen;LI Zhilong;DUAN Songtao(CSG EHV Power Transmission Company,Guangzhou 510000,Guangdong,China;China Electric Power Planning&Engineering Institute,Beijing 100120,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司,广东广州510000 [2]电力规划设计总院,北京100120

出　　处：《电网与清洁能源》2025年第3期85-91,共7页Power System and Clean Energy

基　　金：中国南方电网有限责任公司科技项目(010000202203034JH00006)。

摘　　要：通过合理的控制参数,提升特高压直流送电暂态稳定性控制效果,研究远距离大容量特高压直流送电暂态稳定性控制方法。该方法通过分析远距离大容量特高压直流送电系统的结构,计算其暂态不稳定时电流、电压等突变量,并将其输入到广义动态模糊神经网络模型内;该模型经过迭代训练,输出电流、电压等突变量控制参数,并将其转换为二进制信号后,叠加到特高压直流输送电系统保护装置定电流控制和定功率控制的指令上,实现远距离大容量特高压直流送电暂态稳定性控制。实验结果表明:通过所提方法计算得出的线路电流突变量与实际突变量的数值基本一致,电流突变量的计算较为精准;可有效降低线路功率区间,使线路功率保持有规律的波动,对特高压直流送电暂态稳定性的控制能力较好。By optimizing control parameters,the transient stability control of ultra-high voltage direct current(UHVDC)transmission is enhanced,and the transient stability control method for long-distance,large-capacity UHVDC transmission is studied.The method involves analyzing the system's structure and calculating the abrupt changes in current,voltage,and other variables during transient instability.These mutations are then input into a generalized dynamic fuzzy neural network model.After iterative training,the model outputs the mutation control parameters,such as current and voltage.These parameters,along with other mutation control parameters,are converted into binary signals,which are superimposed on the constant current control and constant power control instructions of the protection device of the UHVDC transmission system to achieve transient stability control for long-distance,large-capacity UHVDC transmission.Experimental results show that the calculated value of line current abrupt change using the proposed method is basically consistent with the actual abrupt change value,and the calculated value of current abrupt change is more accurate.The method can effectively reduce the power range of the transmission line,making the line power fluctuate regularly and better control the transient stability of UHV DC transmission.

关 键 词：远距离大容量 特高压 直流送电 暂态稳定性 模糊神经网络 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]