摘要
特高压直流输电无功电压控制不仅要能满足系统运行的基本滤波要求,还要考虑交流电压和无功交换的边界条件。为了研究无功电压控制控制策略的优先级,以锦屏—苏州±800 kV特高压直流输电工程为例,研究了换流站交流滤波器控制定值,详细搭建了各级滤波器投切控制模型,研究了苏州换流站无功控制的优先级以及无功控制模式。结果表明无功控制按照优先级顺序由低到高为绝对最小滤波控制、最高/最低电压控制、最大无功交换控制、最小滤波器控制和无功交换控制/电压控制,给出了减小换相失败发生几率配套无功控制策略的建议。
Voltage and reactive power control of HVDC transmission must consider the boundary conditions of AC voltage and reactive power exchange. In order to understand the priority of the reactive power control strategy, Jinping-Suzhou ± 800 kV HVDC transmission project is taken as an example in this study to determine the definite control value of AC filter in a converter station. Switching control models of the filters at all grades are constructed to reveal the priority of reactive power control and the control mode of the converter station in Suzhou converter station. Results show that the reactive power control strategies are absolute minimum filter control, maximum/minimum voltage control, maximum reactive power control,minimum filter control, and reactive exchange control/voltage control, according to the priority sequence from low to high. In addition, some reactive power control strategies for reducing the commutation failure probability are offered.
出处
《高压电器》
CAS
CSCD
北大核心
2016年第9期14-19,共6页
High Voltage Apparatus
基金
国家电网公司科技项目~~
关键词
无功电压控制
滤波器
优先级
特高压直流
控制保护系统
reactive power and voltage control
filter
priority
UHVDC
control and protection systems
