A mho type phase comparator relay guideline using phase comparison technique for a power system

摘要: This paper presents a mho distance relay simulation based on the phase comparison technique using typical electrical power systems analysis software for two cases: when operation state is close to static voltage limit and during dynamic perturbation in system. The evaluates impedance variations caused by complex values, polarization, comparator operating region into plane. In addition, found information perturbations from outputs considering mid-term stability program. of mho-phase proximity detects unit elements with measured reach threshold steady-state. Dynamic simulations plane are successfully tested plotting time difference curves input signals. Relay programmers can use these analyze other comparators applications corresponding models