CN205643453U - Reduce intelligent ammeter case of electric wire netting resonance - Google Patents

Abstract

The utility model relates to a reduce intelligent ammeter case of electric wire netting resonance, including the box and ampere meter, the voltmeter of setting in the box that have the cabinet door, its characterized in that still is provided with the device of subducing resonance on the box, and the device comprises singlechip, condenser, voltage transformer, harmonic elimination ware, electric energy quality adjusting device, arc suppressing coil and regulation display screen. The utility model discloses owing to set up the device of subduing resonance, can reduce electric wire netting resonant overvoltage in the present ammeter case function of performance to avoid resonance to cause destructive consequence for electric power system.

Description

An intelligent electric energy meter box for reducing grid resonance

technical field

The utility model relates to an electric meter box, in particular to an intelligent electric energy meter box which reduces the resonance of a power grid.

Background technique

At present, the phenomenon of overvoltage on the power supply grid is relatively common. There are many reasons for grid overvoltage: one of the main reasons is overvoltage caused by resonance. Under special weather conditions such as windy and rainy, the frequency of intermittent grounding of the substation 35kV and below is high. When the grounding makes the system parameters meet the resonance conditions, resonance will occur and resonance overvoltage will be generated at the same time. Resonant overvoltage is extremely harmful to the power grid and will cause destructive consequences to the power system, such as: causing a large amount of additional harmonic loss to the components in the power grid, reducing the efficiency of power generation, transmission and power consumption equipment, and affecting various The normal operation of electrical equipment; causing voltage transformer fuse blown, voltage transformer burning, grid equipment insulation damage, and even phase-to-phase short circuit, protection device malfunction; interfere with adjacent communication systems, reduce communication quality, and even make communication systems It cannot work normally, and accidents on the scheduling side often occur.

Utility model content

In order to solve the above-mentioned problems in the prior art, the utility model provides an intelligent electric energy meter box for reducing grid resonance.

The purpose of this utility model is achieved in this way: an intelligent electric energy meter box for reducing grid resonance, including a box body with a cabinet door and an ammeter and a voltmeter arranged in the box body. A resonance reduction device is provided, which is composed of a single-chip microcomputer, a capacitor, a voltage transformer, a resonance eliminator, a power quality adjustment device, an arc suppression coil and an adjustment display screen, wherein the capacitor is electrically connected to the power grid and the voltage transformer respectively; The voltage transformer is electrically connected with the single-chip electromechanical device; the single-chip microcomputer is electrically connected with the resonance eliminator and the adjustment display screen respectively, and the resonance eliminator is electrically connected with the arc suppressing coil and the power quality adjustment device respectively.

The single-chip microcomputer is also connected with a harmonic elimination indicator light, a warning light and a voice alarm device.

The adjustment display screen is arranged on the outside of the cabinet door, the harmonic elimination indicator light and the warning light are arranged on the top outside the box body, and the voice alarm device is arranged on the back side of the box body.

The box is provided with a transverse partition, and the single-chip microcomputer, capacitor, voltage transformer, resonance eliminator, power quality adjustment device, and arc suppression coil are respectively arranged on the transverse partition and the bottom of the box.

Because the utility model is provided with a device for reducing resonance, it can reduce the resonance overvoltage of the power grid while exerting the function of the existing meter box, thereby avoiding the destructive consequences of resonance to the power system and reducing the large amount of additional damage caused by the components in the power grid caused by resonance. Harmonic loss can increase the efficiency of power generation, transmission and power consumption equipment; and it can alarm in time to prompt the operation status of the power grid. The utility model integrates the electric energy metering device and the resonance reducing device in one structure, and the whole device has simple structure, reasonable design and wide applicability.

Description of drawings

Fig. 1 is the structural principle schematic diagram of the present utility model;

Fig. 2 is a perspective view of the structure of the utility model;

Fig. 3 is a front view of the utility model cabinet door;

Fig. 4 is the rear view of the box of the utility model.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1, 2, 3, and 4, this embodiment omits the existing technical parts such as the ammeter and voltmeter of the meter box. The device for reducing resonance of the present utility model is composed of a single-chip microcomputer 6, a capacitor 7, a voltage transformer 8, a resonance eliminator 9, a power quality adjustment device 10, an arc suppression coil 11 and an adjustment display screen 3, wherein the capacitor is respectively connected to the power grid 15 and The voltage transformer is electrically connected; the voltage transformer is electrically connected to the single chip; the single chip is electrically connected to the resonance eliminator and the adjustment display screen respectively, and the resonance eliminator is electrically connected to the arc suppressing coil and the power quality adjustment device respectively. The single-chip microcomputer is also connected with a harmonic elimination indicator light 12, a warning light 13 and a voice alarm device 14.

The adjustment display screen is arranged on the outside of the cabinet door 2, and 4 is a handle. The harmonic elimination indicator light and the warning light are arranged on the outer top of the box body 1, and the voice alarm device is arranged on the back side of the box body.

A transverse partition 5 is arranged in the box, and a single-chip microcomputer, a capacitor, a voltage transformer, a resonance eliminator, a power quality adjustment device, and an arc suppression coil are respectively arranged on the transverse partition and the bottom of the box.

In use, when the voltage of the power grid passes through the capacitor and the voltage transformer in turn, the resonance is eliminated through the single-chip microcomputer, and the remaining voltage through the resonance eliminator is adjusted to the normal voltage through the energy quality adjustment device. When the voltage is too large, Will call the police.

Claims (4)

1. An intelligent electric energy meter box for reducing grid resonance, comprising a box body with a cabinet door and an ammeter and a voltmeter arranged in the box body, characterized in that a device for reducing resonance is also provided on the box body, the The device is composed of single-chip microcomputer, capacitor, voltage transformer, resonance eliminator, power quality adjustment device, arc suppression coil and adjustment display screen, in which the capacitor is electrically connected to the grid and voltage transformer respectively; the voltage transformer is electrically connected to the single-chip electromechanical ; The single-chip microcomputer is electrically connected with the resonance eliminator and the adjustment display screen respectively, and the resonance eliminator is electrically connected with the arc suppression coil and the power quality adjustment device respectively. 2. A kind of smart energy meter box for reducing grid resonance according to claim 1, characterized in that said single-chip microcomputer is also connected with a resonance elimination indicator light, a warning light and a voice alarm device. 3. A smart energy meter box for reducing grid resonance according to claim 1, characterized in that the adjustment display screen is arranged on the outside of the cabinet door, the harmonic elimination indicator light and the alarm light are arranged on the top outside the box, and the voice The alarm device is set on the back of the box. 4. A kind of smart energy meter box for reducing grid resonance according to claim 1, characterized in that the box is provided with a transverse partition, a single-chip microcomputer, a capacitor, a voltage transformer, a resonance eliminator, and a power quality regulator The device and the arc suppression coil are respectively arranged on the diaphragm and the bottom of the box.