Device capable of preventing abnormal reversely-fed electricity

Abstract

The invention provides a device capable of preventing abnormal reversely-fed electricity. A forward unidirectional conductive component group (4) and a backward unidirectional conductive component group (6) are arranged by utilizing the unidirectional conduction performance of the unidirectional conductive element group; the signal input end of the forward unidirectional conductive component group (4) is connected with a power line (1) at the power supply end by an electric energy collector (8) at the power supply end; the signal output end is connected with a controller (10) by a forward signal tester (5); the signal input end of the backward unidirectional conductive component group (6) is connected with a power line (2) at the load end by an electric energy collector (9) at the load end; the signal output end of the backward unidirectional conductive component group is connected with the controller (10) by a backward signal tester (7); a forward switch (12) and a backward switch (13) are arranged and are connected with the controller (10) by a switch state signal recognizer (11); and the controller (10) can recognize the charged situation of the power line according to the signal combining situation of the forward signal tester (5), the backward signal tester (7) and the switch state signal recognizer (11) so as to control the electric switch (3) to execute corresponding actions, thereby preventing the constructing and maintaining personnel on the line from being harmed by abnormal reversely-fed electricity.

Description

Technical field [0001] The invention relates to a device for preventing abnormal reverse power transmission, which can identify and prevent the user's self-contained power supply from suddenly abnormal reverse power transmission to the public power grid during the power line or equipment power outage maintenance process, thereby endangering the life safety of construction and maintenance workers on the power line . Background technique [0002] The continuous progress and development of society has prompted people to have a stronger demand for electricity. Many electricity users, such as factories and enterprises, have provided their own power sources such as gasoline (diesel) generators or storage batteries in order to meet uninterrupted electricity consumption. When the power grid fails and the power is cut off, the self-provided power supply is used to meet the electricity demand of the factory and enterprise. However, due to the lack of strict management of self-provide...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantage that the existing power users need to manually operate the two-way switch blade every time they start their own power supply to avoid abnormal reverse power transmission from the self-provided power supply to the public grid, the present invention provides a device for preventing abnormal reverse power transmission, which prevents abnormal The anti-power transmission device can automatically identify the liveliness of the line and prevent the occurrence of abnormal reverse power transmission from the user's own power supply to the public grid

Images