Functional meter capable of locating fault point and method used for locating fault point and applied to functional meter

Abstract

The invention provides a functional meter capable of locating a fault point and a locating method of the functional meter. With the functional meter and the locating method thereof adopted, the fault point can be located fast, power supply recovery time can be greatly decreased, economic losses of power supply departments and users can be reduced, and power supply reliability can be improved. The functional meter includes three voltage transformers, three relays I, a switching power source, a voltage detection unit, three current transformers, three relays II, three green lamp indication circuits, a current detection unit, three self-providing power sources, three relays III, a power multiplication unit, a control unit, a self-providing power source discharge monitoring unit, a memory I, a display unit I, a wireless transmission control module, a wireless receiving control module, a processing unit, a memory II and a power grid circuit geographic map electronic simulation board; an overcurrent switch and a zero-current action switch are connected in series so as to form each relay II; the relays II are corresponding to various kinds of line fracture and short-circuiting faults respectively; and the self-providing power sources are connected with red and green light indication units through the relays III, so that a discharge loop can be formed.

Description

technical field [0001] The invention relates to a function table capable of locating a fault point and a method for locating the fault point, which is installed in a low-voltage power distribution line on the secondary side of a high-voltage transformer, and can locate the line fault point of a 10kV high-voltage line and a low-voltage line. Background technique [0002] At present, when various short-circuit faults occur on overhead lines, manual line inspection is used to find the fault point, which takes a very long time to search, resulting in a long cycle for restoring power transmission. Especially at night, line inspection is very difficult, and sometimes it may take The failure point cannot be found, affecting the normal power supply, causing economic losses to the power supply department and users, bringing inconvenience to residents, and reducing the reliability of power grid power supply. Contents of the invention [0003] The technical problem to be solved by th...

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Problems solved by technology

[0002] At present, when various short-circuit faults occur on overhead lines, manual line inspection is used to find the fault point, which takes a very long time to search, resulting in a long cycle for restoring power transmission. Especially at night, line inspection is very difficult, and sometimes it may take The fault point cannot be found, affecting the normal power supply, causing economic losses to the power supply department and users, and bringing inconvenience to residents, reducing the reliability of power grid power supply

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