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Control and operation of distributed generation in distribution systems

机译：配电系统中分布式发电的控制和操作

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摘要

Many distribution systems nowadays have significant penetration of distributed generation (DC) and thus, islanding operation of these distribution systems is becoming a viable option for economical and technical reasons. The DC should operate optimally during both grid-connected and island conditions, which can be achieved with change in operating strategy. Many islanding detection techniques have been developed but little work has been done to detect grid re-connection. This paper presents strategies to operate DC in grid connected and islanded modes and a new grid re-connection detection algorithm, which uses average rate of change of frequency (Af5) and real power shift (RPS), in the islanded mode. RPS will increase or decrease the power set point of the generator with increasing or decreasing system frequency, respectively. Simulation results show that the proposed method can operate the DC efficiently and is effective in detecting grid-reconnection.
机译：如今，许多配电系统已广泛渗透分布式发电（DC），因此，出于经济和技术原因，这些配电系统的孤岛运行已成为可行的选择。直流电在并网和孤岛条件下均应处于最佳运行状态，这可以通过更改运行策略来实现。已经开发了许多孤岛检测技术，但是很少进行检测电网重新连接的工作。本文提出了在并网和孤岛模式下运行直流电的策略以及一种新的并网重新连接检测算法，该算法在孤岛模式下使用平均频率变化率（Af5）和有功功率偏移（RPS）。 RPS将分别随着系统频率的增加或减少而增加或减少发电机的功率设定点。仿真结果表明，该方法能有效地运行直流电，对电网重接检测有效。

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