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Intelligent tuning compensation package unit

A technology of tuning compensation and a complete set of devices, which is applied in the direction of circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., and can solve problems such as difficult judgment, inconvenient adjustment, and inability to automatically adjust

Inactive Publication Date: 2014-04-30
QINGDAO SHICHI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention proposes a complete set of intelligent tuning and compensation device to solve the above-mentioned problems of inconvenient adjustment, difficult judgment and inability to adjust automatically

Method used

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] Such as figure 1 As shown, the complete set of intelligent tuning and compensation in this embodiment includes a grounding transformer 1, an isolating switch 2, a turn-adjusting inductance coil 3, a current transformer 4, a damping resistor 5, an on-load switch 6, a microcomputer controller 7 and zero Sequence CT8, the grounding transformer 1 is grounded through the isolating switch 2, the turn-adjusting inductance coil 3 and the current transformer 4 i...

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Abstract

The invention provides an intelligent tuning compensation package unit. The intelligent tuning compensation package unit comprises a grounding transformer, a disconnecting switch, a turn adjusting inductive coil, a current mutual inductor, a damping resistor, a loaded switch, a microcomputer controller and a zero-sequence CT. The grounding transformer sequentially passes through the disconnecting switch, the turn adjusting inductive coil and the current mutual inductor and is grounded, the damping resistors are connected to the secondary side of the turn adjusting inductive coil in parallel, the current mutual inductor is connected with the microcomputer controller, the primary side of the turn adjusting inductive coil is connected with the microcomputer controller through the loaded switch, and the zero-sequence CT is connected with the microcomputer controller. The intelligent tuning compensation package unit can automatically and timely monitor and track changes of the operation mode of a power grid and rapidly adjust the inductance value of the turn adjusting inductive coil to track and compensate a changed capacitor current, so that the detuning degree is always within a specified range.

Description

technical field [0001] The invention relates to power system equipment, in particular to a complete set of intelligent tuning and compensation equipment. Background technique [0002] The neutral point grounding method of the power system is a very important comprehensive problem. It not only involves the safety and reliability of the power grid itself, the selection of overvoltage insulation level, but also has an important impact on communication interference and personal safety. [0003] With the needs of urban construction and development and the increase of power supply load, most of the outgoing lines of the urban distribution network system are cable outgoing lines, and the single-phase grounding capacitor current in the distribution network will increase sharply. Overvoltage Protection and Insulation Coordination of the "Overvoltage Protection and Insulation Coordination" stipulates that when the single-phase ground fault capacitance current of 3-66KV system exceeds ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/08
Inventor 史志勇
Owner QINGDAO SHICHI ELECTRIC
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