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One、Overview
The turn - turn arc suppression coil is used to adjust the inductance value by adjusting the tap of the load regulating switch. When the normal operation of power grid, through the real measurement through the arc suppression coil current amplitude, compute grid current mode of capacitive current, according to the preset minimum residual flow value, by the controller to adjust on-load voltage regulating tap to the compensation of the gear you need. When the grounding fault occurs, the capacitance current is compensated for grounding, so that the residual current of the fault point can be restricted within the set range.
Two、Product features
The structure is simple, easy to operate and low noise.Automatic tracking according to the change of power grid operation mode.
The earth compensation time is zero second response.
The device adopts 32-bit DSP chip as the core, powerful and reliable.
The touch screen display technology is intuitive, clear and easy to understand.
The two sets of grounding compensation devices are run in parallel.
Three、Model specification
The maximum compensation current is the maximum capacitance current of the system.
Installation method:
A. Centralized: ground transformer and arc suppression coil are concentrated in a box, and the center screen is in the main control room.
B. Distributed: ground transformer and arc suppression coil are installed outdoors or in different cabinets. The center screen is in the main control room.
Whether or not to select a small current ground selection function, it is necessary to inform the circuit number of the substation and the inner diameter of the zero sequence transformer.
When ordering, please inform the box and center screen size and face the direction and color of the door.
Four、Technical indicators
Environmental conditions:Temperature - 20 ℃ ~ + 45 ℃, relative humidity of 90% or less;
The height is customized according to customer requirements;
Applicable voltage level: 6KV, 10KV, 35KV, 66KV;
The measurement error of capacitance current is less than 2%;
The residual stable time is less than or equal to 60ms;
The adjustment series is no more than 25;
The residual current is no more than 5A when the single-phase grounding fault occurs.
When the single-phase grounding fault is made, the compensation network detuning degree is less than 10% (related to the setting value of the grounding residual flow).
