Electromagnetic unit and capacitor voltage transformer including electromagnetic unit

A technology of voltage transformers and electromagnetic units, applied in inductors, voltage dividers, transformers, etc., can solve problems such as product failure, insulation reduction, oil leakage, etc., and achieve the effect of reducing insulation strength requirements and reducing volume and weight.

Inactive Publication Date: 2013-04-10
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the electromagnetic unit of capacitive voltage transformer at home and abroad basically adopts oil-immersed type, which is prone to oil leakage, moisture absorption, resulting in insulation reduction and other problems, and in severe cases, product failure

Method used

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  • Electromagnetic unit and capacitor voltage transformer including electromagnetic unit
  • Electromagnetic unit and capacitor voltage transformer including electromagnetic unit
  • Electromagnetic unit and capacitor voltage transformer including electromagnetic unit

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Embodiment Construction

[0022] see Figure 1 to Figure 7 As shown, the capacitive voltage transformer of the present invention includes an electromagnetic unit and a capacitive voltage divider 9 connected to the electromagnetic unit. The electromagnetic unit includes an intermediate transformer 1, a compensating reactor 2, and a damping reactor 3. The capacitive voltage divider 9 Including the voltage dividing capacitor C1 and the voltage dividing capacitor C2; wherein, the intermediate transformer 1, the compensation reactor 2 and the damping reactor 3 are integrally cast with epoxy, and the low-voltage terminal X of the intermediate transformer T Terminal A with compensating reactor L connection, the high voltage terminal A of the intermediate transformer T Lead out from the casting body and connect to the medium voltage end of the capacitor voltage divider; the grounding terminal X of the compensation reactor L ground; the low-voltage end of the capacitive voltage divider passes through the grou...

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Abstract

The invention provides an electromagnetic unit and a capacitor voltage transformer including the electromagnetic unit. The electromagnetic unit comprises an intermediate voltage transformer, a compensation reactor and a damping reactor, wherein the intermediate voltage transformer, the compensation reactor and the damping reactor are subjected to integral epoxy pouring, a lower-voltage terminal XT of the intermediate voltage transformer is connected with a wiring terminal AL of the compensation reactor, and a high-voltage terminal AT of the intermediate voltage transformer is guided out from a pouring body; a grounding terminal XL of the compensation reactor is grounded; and the damping reactor comprises a coil and a resistor, wherein the coil is connected with a secondary residual winding of the intermediate voltage transformer, and the resistor is externally arranged on the exterior of the pouring body.

Description

technical field [0001] The invention relates to a voltage measuring device for an AC power transmission system, in particular to an electromagnetic unit and a capacitive voltage transformer including the electromagnetic unit. Background technique [0002] At present, the electromagnetic unit of capacitive voltage transformer at home and abroad basically adopts oil-immersed type, which is prone to oil leakage, moisture absorption, resulting in insulation reduction and other problems, and in severe cases, product failure. As a part of the capacitive voltage transformer, the electromagnetic unit cannot be interchanged after its parameters are determined. Contents of the invention [0003] The invention provides an electromagnetic unit and a capacitive voltage transformer including the electromagnetic unit. By connecting different components externally, the requirements of parameters of different capacitive voltage transformers are met, and the needs of customers are met. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/24G01R15/06
Inventor 任春阳段亚萍刘水平赵莹
Owner CHINA XD ELECTRIC CO LTD
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