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How to nuisance trip distributed generation

机译：如何扰乱旅行分布式发电

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Distributed generation (DG) interconnection protection must be secure to allow the DG to operate in parallel with utility distribution systems. It also must reliably disconnect the DG from the utility distribution system for a variety of reasons such as: loss of utility supply to the feeder (anti-islanding), shunt faults on the utility system and abnormal operating conditions (including open-series events). Additionally, the system should provide restoration elements. Most protection elements are applied to trip the DG off the distribution system in less than one second, and often much faster (10-30 cycles). These tripping times are mandated in DG interconnection standards, and are generally not open to change. Events can occur on the system and within the DG facility, however, that may lead to nuisance trips. These trips may occur due to certain protection elements being set with a tolerance that is too close, combined with an interplay of events that include power surges from cycling loads within a DG facility or faults within a DG facility that should be cleared by other means. We explore these in scenarios labeled as "opportunities" for nuisance tripping of the DG facility. Specific setting examples are not provided, as they are beyond the scope of this paper, but general concepts and possible solutions are discussed to mitigate nuisance tripping.
机译：分布式发电（DG）互连保护必须安全，以允许DG与公用事业配电系统并行运行。它还必须出于各种原因可靠地将DG与公用事业配电系统断开连接，例如：输电线的公用事业供应中断（防孤岛），公用事业系统上的分流故障以及异常的运行状况（包括开放系列事件） 。此外，系统应提供恢复元素。大多数保护元件用于在不到一秒钟的时间内使DG从配电系统跳闸，并且通常更快（10-30个周期）。这些跳闸时间是DG互连标准中规定的，通常不容更改。但是，事件可能会在系统上以及在DG设施内发生，这可能会造成麻烦。这些跳闸可能是由于某些保护元件设置的公差太小而引起的，并且相互作用的事件包括DG设施内循环负载产生的电涌或DG设施内的故障应通过其他方式清除。我们在标记为DG设施造成麻烦的“机会”的情况下探索这些情况。没有提供具体的设置示例，因为它们超出了本文的范围，但是将讨论一些通用的概念和可能的解决方案，以减轻麻烦的跳闸。

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