Guodian Nanrui NSR681RF-D Unit Measurement and Control Device

Guodian Nanrui NSR681RF-D Unit Measurement and Control Device

Function Configuration

The main functions of measurement and control include:1）48 Road remote signal input acquisition, device remote signal displacementSOErecord;2）12 Road remote control divisionCombined, including1 Remote adjustment of road gear;3）1 Close the circuit breaker at the same time as the road inspection;4）2 Direct current measurement;5）1 Group gear measurement;6）IaTheIbTheIcTheUaTheUbTheUcTheUabTheUbcTheUcaThe3UoTheUxThePaThePbThePcThePTheQTheSTheCOSφTheFrwait19 An analog quantityTelemetry;7）EventSOE.

Simultaneous function

1. Guodian Nanrui NSR681RF-D Unit Measurement and Control Deviceachievable1The synchronous function of the circuit breaker for each line.

2. There are two options for checking without pressure and checking during the same period: when checking without pressure and checking during the same period, checking without pressure takes priority; When no pressure is detected and the same period is detected, it will be opened at the same time; The synchronous closing has the functions of frequency difference locking, angle difference locking, pressure difference locking, and frequency difference acceleration locking. Busbars and linesPhase angle differenceMeasure once every half power frequency cycle, while taking into account the frequency differencefFrequency difference accelerationd^f _dtAnd the switch action timeTdqCalculate the phase angle difference of the circuit breaker at the moment of closing, ensuring that the phase angle difference of the circuit breaker at the moment of closing meets the set value_MeThe calculation formula is as follows:

When the leading angle satisfies the formula, a closing pulse can be sent to meet the setting value requirements.

3. The simultaneous closing should be completed within the entire group reset time. If the closing is still unsuccessful after the entire group reset time, the closing command will be cancelled.