Turn-Adjustable Arc Suppression Coil

Our company has developed the WF-XHZ arc suppressioncoil, which uses standard industrial computer system, bus structure, multi-layer circuit board design, large screen touch LCD screen, all Chinese characters display. It has the characteristics of stable and reliable operation, intuitive display, convenient operation and strong anti-interference ability. At the same time, the system has perfect parameter setting and information query function. The system overcomes the shortcomings of the previous arc suppression coil with small adjustment range, and can make full adjustment. The advanced algorithm such as residual current increasing S method and active power method is adopted to select the high voltage grounding lines, and the line selection is accurate and rapid.

Performance index:

l  Voltage level: 6kV~66kV.

l  Number of busbar: two section.

l  Measurement error of capacitance current: less than 2%.

l  Filing time: less than 20ms.

l  Ground residual flow: less than 5A.

l  Controller power: AC 220V, rated frequency: 50Hz; DC 220V/110V, rated frequency: 50Hz.

l  The controller applies to the environment: temperature: -10 C ~+45 C; humidity: less than 95%.

l  Number of route selection: 8~42 road.

l  Communication interface: RS232/RS485

Fuction:

l  Self-check: automatical or manual internal fault inspection.

l  Alarm: Acousto-optic alarm and teleportation does in case of out-of-resonance beyond limit and single-phase earthing fault.

l  Print: Automatically or manually print.

l Display: Large screen LCD can display the running state, system capacitive current , neutral voltage, neutral current, out-of-resonance degree, residual current, fault times of single-phase earthing and beginning and eliminating time of earthing.

l  Teleportation: RS232 and RS422/485 interface connecting with computer-monitor system of substation.

l  Sleep mode: Real time measure out-of-resonance degree, tap position and neutral voltage and follow to measure it when system operation mode changes.

l  Identification: Automatically identify permanent earth fault and transient earth fault and at the same time, switch on or off arc-suppression coil to make compensation.

l  Human-machine interaction: automatic or manual control switching, seting time and operation data, inquiring fault information.

l  Storing and doing statistic: 500 times of capacitive current and 500 times of earthing data can be stored.

l  Online operation: Automatically identify system operation mode and realize

l  Fast grounding compensation speed: The turn-adjustable arc suppression coil adopts pre-adjustment compensation, which can compensate for a single-phase ground fault within 2ms, greatly reducing the probability of a transient ground fault developing into a permanent fault.

l  High reliability of the system: the turn-adjustable arc suppression coil has a simple structure and high reliability, and the compensation of the arc suppression coil is less dependent on the power supply and the controller, which can continue to be compensated in the event of faults and abnormalities.

l  Complete isolation of primary and secondary system: The damping resistance protection of the damping box of the complete device adopts SCR self-triggering technology to realize double short-circuit protection and ensure complete isolation of the primary and secondary systems.

l  Perfect protection function: the perfect protection functions designed include gear end-to-end locking, back and forth adjustment locking, continuous adjustment locking, single-phase grounding action locking and other perfect locking protection functions to ensure the safe and reliable operation of the whole system.

Technical parameter:

WF-XHZ series arc-suspension coil complet compensation installation can change inductive current compensation of the arc suspension coil by changing inductance L. Advantages: strong adaptability in electrical network, extremely short response time and automatic detection and identification of the running status of electrical network via computer-based controller. During normal operation of the electric network, it can real-time calculate the capacitive current of the power network to earth and the out-of-resonance of power compensation network. It can realize quick and rational compensation in case of single-phase earthing.