GE IS200VPWRH1AGD Gas and Steam Turbine Management Mark VI PCB

Description

GE General Electric Technical Specifications: IS200VPWRH1AGD

A simulation feature is provided for testing the functionality of the relay in response to program conditions, with

IS200VPWRH1AGD out the need of external AC voltage and current inputs. First time users will find this to be a valuable training

tool. System parameters such as currents and voltages, phase angles, and system frequency are entered as

setpoints. When placed in simulation mode, IS200VPWRH1AGD the relay suspends reading actual AC inputs, generates samples

to represent the programmed phasors, and loads these samples into the memory to be processed by the relay.

Both normal and fault conditions can be simulated to exercise a variety of relay features. There are three sets

of input parameters used during simulation, each providing a particular state of the system, as shown below:

IS200VPWRH1AGD Prefault State: This state simulates the normal operating condition of a feeder carrying load current, by

replacing the normal input parameters with programmed prefault values. Voltages are auto

IS200VPWRH1AGD matically set to the nominal value programmed in the BUS VT NOMINAL SECONDARY VOLTAGE

setpoint. The neutral current is set to zero. Phase currents are balanced and set to the value

programmed in the PREFAULT PHASE A/B/C CURRENT setpoint. The phase angle of each phase

current relative to its corresponding phase neutral voltage is set to the value programmed in

the PREFAULT POWER FACTOR ANGLE setpoint. The frequency of voltages and currents are auto

matically set to the values programmed in the NOMINAL FREQUENCY setpoint.

Fault State: This state simulates the faulted operating condition of a feeder by replacing the normal pre

fault feeder input parameters with programmed fault values. The magnitude and angle of each

bus voltage and current, polarizing current, system frequency and analog input are set to the

values programmed under the FAULT VALUES setpoints. The neutral current is calculated from

the vector sum of the phase currents, and 3Vo from the vector sum of the phase voltages.

Postfault State:This state is intended to simulate a feeder that has tripped. Current is automatically set to 0

amps. Bus voltages are automatically balanced and set to phase A-N at 0°, B-N at 120° and

C-N at 240°. The bus voltage magnitude and frequency are set to the entered values. The syn

chronizing voltage is set to the entered values of magnitude, angle (with respect to phase A-N

bus voltage) and frequency.

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