制约葛南直流大负荷精准控制的关键因素OA
Key factors restricting accurate control of high load in Ge-Nan direct current project
2023 年,葛南直流工程进行了控保及换流阀改造.试运行期间,系统出现过负荷限制电流导致功率未达到 1 160MW的异常情况.为此,首先对改造后直流线路在大负荷情况下运行时送端直流电压无法达到额定电压的原因进行分析,并在此基础上分析制约大负荷精准控制的关键因素,包括交流电压低或换流变档位低、控制中设定的相对直流感性压降值高于实际值、熄弧角运行在额定参考值之上;然后简要分析直流电压的测量误差、直流线路电阻及换流阀正向压降的偏差对直流功率精准控制的影…查看全部>>
In 2023,Ge-Nan DC project carried out the renovation of control,protection and converter valves.During the trial operation,there was an abnormal situation where the power did not reach 1 160MW due to overload limiting current.Therefore,the reason why the DC voltage at the sending end cannot reach the rated voltage during high load operation after the renovation of DC line is analyzed firstly.On this basis,the key factors restricting accurate control of high …查看全部>>
付广旭;王永平;罗金辉
南京南瑞继保电气有限公司,南京 211102南京南瑞继保电气有限公司,南京 211102南京南瑞继保电气有限公司,南京 211102
直流输电精准控制过负荷限制大负荷线路改造
DC transmissionaccurate controloverload limitationhigh loadline renovation
《电气技术》 2024 (2)
79-84,6
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