| Title |
Development of the Automative Correction System for the Digital Over-current Relay With Distribution System |
| Authors |
백영식(Baek, Young-Sik) ; 이호준(Lee, Ho-Jun) |
| Keywords |
Overcurrent relay ; SCADA(Supervisory Control And Data Acquisition) ; HMI ; Characteristic Curve |
| Abstract |
In the distribution system, Change of system happens frequently. However, most of the relays are operated manually by a person or not changed when system changed. So, when fault happened, a case that relaydoes not act rapidly happens. Also, in current power system, digital relays are used because of digitization of relay. Digital relay has very many advantages than existing analog relay. One of these advantages is that communication is available and easily can make characteristic curve. If specific values are sent to a relay by communication, A relay can make suitable characteristic curve according to the value. In this paper, by using voltages and currents measured by relay, state of CB(Circuit Breaker) and these relays, SCADA(Supervisory Control And Data Acquisition) system that control and correct characteristic curve of overcurrent relay at system change by using HMI(Human Machine Interface) is proposed. |