Tightening voltage and frequency wi

Tightening voltage and frequency windows has been suggested as a means to eliminate this problem, but this only reduces the probability of an island occurring, rather than eliminating the possibility. Tightening operating windows also increases the occurrence of nuisance tripping. <br>A more satisfactory solution to the problem of detecting a balanced unintentional island is the use of an inverter that incorporates a task-specific anti-islanding scheme that includes the measurement of other parameters or methods of destabilizing the grid in the absence of public power control. <br>A.2 Impact of distortion on islanding <br>The islanded load total demand distortion (TDD 6) has an impact on the probability of establishing a distributed resource island. Increased distortion can have several results that impact the ability of an inverter to operate. These include additional voltage zero crossings and reduced total power factor. An inverter that has been designed to operate at unity power factor and low distortion will not continue operating with high load distortion.

Tightening voltage and frequency windows has been suggested as a means to eliminate this problem, but this only reduces the probability of an island occurring, rather than eliminating the possibility. Tightening operating windows also increases the occurrence of nuisance tripping. <br>A more satisfactory solution to the problem of detecting a balanced unintentional island is the use of an inverter that incorporates a task-specific anti-islanding scheme that includes the measurement of other parameters or methods of destabilizing the grid in the absence of public power control. <br>A.2 Impact of distortion on islanding <br>The islanded load total demand distortion (TDD 6) has an impact on the probability of establishing a distributed resource island. Increased distortion can have several results that impact the ability of an inverter to operate. These include additional voltage zero crossings and reduced total power factor. An inverter that has been designed to operate at unity power factor and low distortion will not continue operating with high load distortion.

有人建议通过收紧电压和频率窗口来消除这一问题，但这只会降低孤岛发生的可能性，而不是消除这种可能性。收紧操作窗也会增加绊倒事故的发生。<br>检测平衡无意孤岛问题的一个更令人满意的解决方案是使用逆变器，该逆变器包含特定任务的反孤岛方案，该方案包括在没有公共电源控制的情况下测量其他参数或破坏电网稳定的方法。<br>A、 2畸变对孤岛效应的影响<br>孤岛负载总需求失真（TDD 6）对建立分布式资源孤岛的概率有影响。增加的失真可能会产生一些影响逆变器工作能力的结果。这些措施包括增加电压过零点和降低总功率因数。设计为在单位功率因数和低失真下工作的逆变器不会在高负载失真下继续工作。