电力电子装置在电力系统中的应用

Application of power electronic device in power system

电力电子装置在电力系统中的应用主要体现在以下几个方面,比如:在发电系统中的应用,电力电子装置既可以对水力发电的水流量和压强进行控制,又是光伏电站的控制中枢;在电能储存中的应用,电能储备的作用在于应对用电高峰期时能够有充足的后备能源供应能力,可以利用电力电子装置中的变频驱动技术对实时用电量和电能进行储备和释放,大幅提高了电能的使用效率;在微型电网中的应用,微型电网主要包含了分布电源、储能装置、功率转换器和监控保护装置,将电力电子装置应用其中,可以提高电网通信监控的时效性,防止因过载负荷而导致微型电网系统瘫痪;在输电环节的应用,主要应用在直流输电、分频输电、固态变压器等模块;在电能质量控制中的应用,电能质量控制中常用到的电力电子装置有动态无功补偿器、链式静止同步补偿器、有源电力滤波器、统一电能质量调节器、动态电压恢复器等电子装置,可以解决电压不平衡、正序、逆序、无序等问题。

The application of power electronic devices in power system is mainly embodied in the following aspects.For example,in the application of power generation system,power electronic devices can not only control the water flow and pressure of power generation,but also be the control center of photovoltaic power station.In the application of electric energy storage,the function of electric energy reserve is to have sufficient reserve energy supply capacity in the peak period of power consumption.The technology of frequency conversion drive in power electronic devices can be used to reserve and release real-time electricity and electric energy,which greatly improves the efficiency of electric energy utilization.In the application of micro-grid,micro-grid mainly includes distributed power supply,energy storage devices,power converters and monitoring and protection devices.The application of power electronic devices in micro-grid can improve the timeliness of communication and monitoring,and prevent the paralysis of micro-grid system caused by overload.In the application of transmission link,it is mainly used in DC transmission,frequency division transmission,solid-state transformer and other modules.In the application of power quality control,power electronic devices commonly used in power quality control include dynamic reactive power compensator,chain static synchronous compensator,active power filter,unified power quality regulator and dynamic voltage restorer,which can solve the problems of voltage imbalance,positive sequence,reverse sequence and disorder.Question.