Method for judging disappearance of secondary direct-current power supply of far-end transformer substation
A secondary DC and substation technology, applied in electrical components, circuit devices, information technology support systems, etc., can solve problems such as the inability of the action time to meet the system, slow action time, and threats to the safe and stable operation of the system
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[0019] The technical solutions and beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0020] The invention provides a method for judging the disappearance of the secondary DC power supply of the remote substation. According to the principle that the protection of the secondary DC power supply and the communication power supply circuit need to be independently designed according to the secondary design specification of the substation, it can be known that when the protection secondary DC power supply circuit loses power , the communication power supply circuit is still normal, so the present invention considers that the protection secondary DC power supply failure signal is transmitted to the opposite side substation through the measurement and control device and the communication device. The content of the judgment method is: the substation secondary DC power supply (including the protection device DC a...
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