System and method for management of circuit breaker counter

Patent metadata

Field	Value
Publication number	US-9797954-B2
Application number	US-201514871604-A
Country	US
Kind code	B2
Filing date	Sep 30, 2015
Priority date	Jun 12, 2015
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A system for management of a circuit breaker counter according to an exemplary embodiment of the present invention includes a data processing unit receiving state change data and measurement data of at least one of a circuit breaker and a current measuring unit and transferring an event on the basis of the state change data and measurement data; and a counter managing unit counting a total operation, a load-breaking operation and a fault-breaking operation of the circuit breaker, based on the event and the measurement data, and outputting and storing respective count accumulation values.

First claim

What is claimed is:

1. A system for management of a circuit breaker counter, the system comprising:
a data processing unit receiving state change data and measurement data of at least one of a circuit breaker and a current measuring unit and transferring an event on the basis of the state change data and measurement data; and
a counter managing unit counting a total operation, a load-breaking operation and a fault-breaking operation of the circuit breaker based on the event and the measurement data, and outputting and storing respective count accumulation values.

2. The system of claim 1 , wherein the counter managing unit determines an arrival of a checking time based on the count accumulation values and outputs a result of the determination.

3. The system of claim 1 , wherein the counting of the load-breaking operation is performed under conditions in which a circuit breaker operation event occurs, a break load is higher than a reference value, and, after a break, a load is lower than the reference value, and a relay trip event does not occur.

4. The system of claim 1 , wherein the counting of the fault-breaking operation is performed under conditions in which a circuit breaker operation event occurs, a break load is higher than a reference value, and, after a break, a load is lower than the reference value, and a relay trip event occurs.

5. The system of claim 4 , wherein the counting of the fault-breaking operation is performed under conditions in which a determination by fault determination logic on the basis of the measurement data is added.

6. The system of claim 1 , wherein the counter managing unit separately counts the total operation, the load-breaking operation and the fault-breaking operation after resetting, and outputs and stores respective reset count accumulation values.

7. The system of claim 5 , wherein the fault determination logic determines that a fault occurs in the case that a measured current value of the measurement data is greater than a fault current-setting value, and after a voltage of a power distribution line (PL) becomes a zero-voltage, the zero-voltage is maintained for a predetermined amount of time.

Assignees

• Korea Electric Power Corp

Inventors

• Hyun Hye-Ryun
• Lee Man-Sun
• Lee Kang-Soo
• JANG Jun-Soo
• Song Hyo-Sung
• Jo Il-Lae
• Sin En-Jin

Classifications

• H01H71/04 Primary

  Means for indicating condition of the switching device {(by means of an auxiliary contact H01H71/46)} · CPC title

• H01H2071/044

  Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures · CPC title

• G01R31/333 Primary

  Testing of the switching capacity of high-voltage circuit-breakers {; Testing of breaking capacity or related variables, e.g. post arc current or transient recovery voltage} · CPC title