摘要
目前大部分同期并列装置主要是通过调整发电机的转速和励磁来调整频率差和电压差,只适用于发电厂与系统的并列,不适用于电网间的并列。文中提出了一种基于功率传递的电网间同期并列的方法,并将该方法与现有静止同步补偿器(STATCOM)技术相结合,形成具有电网间同期并列和无功补偿功能的复合系统。作为电网间同期并列装置,该系统具有速度快、操作简单等优点,可用于电网间自动快速同期并列和环网并列操作。在电网正常的情况下,可作为无功补偿装置使用,不会造成资源闲置。仿真实验验证了该方法的有效性。
At present, most of the synchronization devices regulate the frequency and voltage by adjusting the speed and exciting current of the generator, which can only be used in power plants. Based on the power exchange principle, a new fast method of power grid synchronization is proposed. It can be combined with existing technology of STATCOM to form a new compound system, which has the two functions： power grid synchronization and reactive power compensation. As a power grid synchronization device, the main advantages include fast synchronization speed and operational simplicity. It can be used to achieve power grid synchronization and ring net parallel operation. Under normal operating condition, it can be used for reactive power compensation so as to avoid unnecessary waste of installed asset. Simulation results demonstrate the method is effective.
出处
《电力系统自动化》
EI
CSCD
北大核心
2009年第18期87-91,共5页
Automation of Electric Power Systems
