CE Protection Relay Testing Support Secondary Checking Phase Of 2 Merger Units

Support secondary checking phase of 2 merger units of phase, that can also be a merger unit of different channel data between the amplitude, phase, frequency comparison, complete double AD proofreading and so on.

At the same time to support a voltage analog and a set of digital measurements, you can select the voltage analog for the reference phase, to achieve the different locations of the unit data of the secondary checking phase.

When checking phase test, select a channel data, such as a voltage as the base phase, to be measured to be checked phase voltage group amplitude, phase, frequency, while the table shows the form of angle difference and phase difference, and display waveform comparison chart And the vector diagram, through the comparison of information, can check the same side of the voltage phase sequence, the RMS value is correct or not, different side voltage phase relationship, the effective value is correct or not.

KF932 has the characteristics of multi-optical receiver SV sampling data, support SV control block can be network mode or point-to-point mode access, and according to the characteristics of network mode and point to point mode, the corresponding data processing time serial number or time scale Its handling, to ensure the reliability of the data.

In the main interface click on the "Checking phase" to enter the checking phase module SV sampling detection page. For "Checking phase module SV detection page", please refer to "5.2 SV Sampling Analysis" of user manual.

Click or click "ENTER" button after press up,down keyto select the SV control block that will perform the checking phase. When the selected column icon is, it means that the selection has been selected. Can choose two groups.

It is necessary to select "net acquisition (serial number)" or "straight drawing (time scale)" according to whether the SV data is networked or point-to-point access, and the application program automatically determines the optical port according to the SV data access Net mining or straight mining. At the same time also need to choose the sampling rate of SV data corresponding to the majority of the engineering application of 4000Hz.It is recommended to choose 4000Hz, now support 4000Hz (80 points/cycle), 12.8kHz (256 points/cycle), 4800Hz (80 points/cycle) and 15.36kHz (256 points/cycle)".

Click "F2 to continue" to enter the checking phase sample value comparison page. First need to select the channel of checking phase.

Phase A (L1) "for reference, other phases are" A (L1) for the calculation of phase angle of 0 degrees, tap the screen or press the direction keys to move the cursor, press "ENTER" button, then select the background color for the yellow channel, from the SV control block in the channel list by the up and down keys to move the cursor and press the "ENTER" key to select and confirm.

Figure: Two groups of control blocks between checking phases

Click "F2 simulation table" to display the A / B / C three-phase angle difference (angle difference) and amplitude difference (ratio difference) in dial form;

Click "F3 waveform" to display the waveform comparison of two groups of ABC three-phase channels. In the waveform comparison interface, click "F3". When "F3: sampling period" is displayed, press the left and right arrows Horizontal pull and shrink the waveform; when the display "F3: amplitude scaling", press the direction of the left and right direction to vertically reduce and enlarge the waveform. At the same time touch the left and right sliding "sampling cycle" and "amplitude scaling" gear can also zoom in and out.

Click "F4 Vector" to display 2 groups of ABC three-phase channel vector.