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

Abstract

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

Technical and market evaluation of thermal generation power plants in the Colombia power system

“…It comprises a set of equipment used to control the flow of energy and ensure the security of the system by automatic protection devices. Electrical substations are fundamental elements to generate, transport and distribute energy to its ultimate use and protection schemes [17]. The generation electrical substations are in charge of directly controlling the power flow of the system because the production generated by them is directly injected to a transmission network associated to this substation, as well as the maneuvering and distribution substations that belong to its associated network [6].…”

Experimental platform tests for setting performances of distance protection installed in Biskra-Batna of the Algerian transmission line

“…In [12], a simulation program-based MATLAB/Simulink is proposed to detect three zones using relays characyeristics, coordination of distance relays and cirduit breakers. In [13], a Mho distance relay simulation based on the phase comparison, technique using a typical electrical power systems analysissoftware.…”