Generator longitudinal differential protection circuit with fast saturation converter
Source: InternetPublisher:吃掉星星 Keywords: Protection circuit generator converter Updated: 2020/04/24
In order to improve the sensitivity of the longitudinal differential protection of the generator , it is sometimes necessary to use a fast saturation converter to avoid
the impact of the non-periodic component of the unbalanced current on the protection. The circuit is shown in Figure 7-22. In the figure, KT is a time relay. In order to monitor whether the
secondary circuit is intact and prevent the longitudinal differential protection from malfunctioning due to external short circuit after the secondary circuit
is disconnected, current relay
KA4 is installed.
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