An index detection device of a three-phase unbalance control device

Abstract

Provided is an index detection device of a three-phase imbalance treatment device. A box body is equipped with a multiphase rectification type negative sequence measurement instrument; a left wall plate and a right wall plate of the box body respectively have a hollow portion inside; a cuboid container is provided with an exhaust fan arranged therein, a plurality of air holes in the top portion of the cuboid container, exhaust ports arranged in the two sides of the cuboid container and conducted to the outer side respectively, and sheet bodies arranged on the exhaust ports and keeping an oblique angle with the horizontal plane respectively; and besides, a right-angle folding-rule-shaped glass bronze block is connected with a cuboid cut-through groove to form an arc-structure guide channel. The device solves the problem that work efficiency of the multiphase rectification type negative sequence measurement instrument is influenced due to damage thereto caused by the case that external liquid penetrates into the box body equipped with the multiphase rectification type negative sequence measurement instrument from top to bottom and high-humidity air rushes into the box body in the prior art.

Description

Technical field [0001] The invention belongs to the technical field of three-phase unbalance treatment, and specifically relates to an index detection device of a three-phase unbalance treatment device. Background technique [0002] At present, in the three-phase unbalance control device, as an index detection device to be used in the unbalance control, such an index detection device mainly detects the three-phase unbalance degree. At this stage, the index detection device is often adopted The multi-phase rectification type negative sequence measuring instrument is used to detect the three-phase voltage imbalance. Specifically, the positive sequence and negative sequence voltage of the three-phase voltage must be obtained through the multi-phase rectification type negative sequence measuring instrument. The working cabinets equipped with multi-phase rectification negative sequence measuring instruments are generally aimed at the situation in the room. The design of such cabinets ...

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Problems solved by technology

[0002] At present, in the three-phase unbalance control device, as an index detection device to be used in unbalance control, such an index detection device is mainly used to detect the degree of three-phase unbalance. At this stage, index detection devices often use The multi-phase rectification negative-sequence measuring instrument is used to detect the unbalanced three-phase voltage. Specifically, the positive-sequence and negative-sequence voltages of the three-phase voltage must be obtained through the multi-phase rectifying negative-sequence measuring instrument. However The current working cabinets equipped with multi-phase rectifying negative-sequence measuring instruments are generally aimed at the environment in the room. The design of such a cabinet cannot meet the needs of continuously maintaining the normal work of the multi-phase rectifying negative-sequence measuring instrument outside the room. Especially in the field operation, the penetration of external liquid into the box equipped with multi-phase rectification negative sequence measuring instrument from top to bottom and the invasion of air with high humidity into the box will cause the multi-phase rectification negative sequence measurement Damage to the instrument, affecting its work efficiency

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