CN201126631Y - 6/10kV vertical compression type energy-saving high-voltage measuring box - Google Patents

Abstract

The utility model discloses a 6/10 kV direct pressure type energy-saving high pressure measurement box, which is composed by a silicon rubber dry type complex bushing (1), a box body (2), a fixing pedestal (10), a 10 kV/100V transformer (6), a switch power source (8), a three-phase width limit full-electronic multifunctional active electric energy meter (5), a GPRS wireless communication module (7) and a lightning arrester (4), characterized in that upper parts of front, back sidewalls in the box body (2) are respectively fixed with non-crystal material current transformer (9) whose upper side is installed with a separation transform circuit board (3). The high pressure measurement box has small entire volume, compact and convenient structure and no limitation of voltage, all on account of canning by adopting the non-crystal material current transformer with small volume and of high intensity insulating materials, the utility model can completely prevent the current theft from interior of the apparatus, and has high integral accuracy, which is in favour of complete and precise measurement.

Description

6/10kV direct press type energy-saving and high-pressure batch meter

Technical field

The utility model relates to a kind of high pressure electricity consumption measuring apparatus, particularly a kind ofly is used for the high voltage supply circuit and consumer carries out on-line monitoring, metering, small size, hermetic 6/10kV direct press type energy-saving and high-pressure batch meter.

Background technology

Along with electric system develops towards high voltage, jumbo direction, guarantee that the power equipment safety operation and the problem of accurate measurement seem particularly important, in case circuit occurs can not get timely solution unusually, will bring tremendous influence and loss to production.High pressure long-distance metering terminal is the important component part of power distribution network on-line monitoring and metering, and it can carry out accurate measurement and on-line monitoring to separate unit or many transformers of each branch road user in the power distribution network.At present, the employed metering method in electricity consumption metering aspect for 6/10kV supply line and consumer all is common high-voltage metering cubicle mode, comprise the metering cabinet housing, firm banking, voltage transformer (VT), current transformer, silicon rubber dry type composite bushing and active electric energy meter, lightning arrester, transformer, compositions such as Switching Power Supply, because current transformer and voltage transformer (VT) volume are bigger, so cause overall volume big, the equipment heaviness, simultaneously on accuracy class, also can only reflect current transformer, voltage transformer (VT), the precision of the sub-unit of active electric energy meter can not reflect the precision of whole metering cabinet.

Existing metering method for the three-phase three-wire system electrical network, adopts the two elements method, gathers UAB and UCB and IA and IC metering three wire circuit; For the three-phase four-wire system net, adopt the three element method, gather the phase voltage and the phase current of three-phase respectively, the metering three-phase circuit.More than these high pressure measurement terminal devices have the following disadvantages: the one, present high pressure measurement terminal, though have multiparameter metering Presentation Function, but measurement range and measuring accuracy can not reach requirement simultaneously, the voltage of being joined, current transformer and active electric energy meter all are to decide according to load condition, only satisfy accuracy requirement within the specific limits, when measuring little load, can not satisfy accuracy rating, measurement range is narrow, and for the metering outfit of measurement range broad, its measuring accuracy is lower again, can not satisfy measuring requirement; The 2nd, existing high pressure measurement equipment, a kind of equipment only limits to a kind of electric pressure, even if electric current can accomplish wide ranges some, but voltage can not accomplish wide ranges some; The 3rd, cost of manufacture is higher; The 4th, the sealed insulation poor performance, the destruction that is easy to cause human factor or natural cause, may there be the problem of electric energy loss in the many switchgear buildings with the user of high-voltage metering cubicle together for some users.

Summary of the invention

The purpose of this utility model is to provide a kind of above the deficiencies in the prior art that overcome, and makes little, in light weight, easy for installation, the thief-proof good electrical property of its structural volume, can prevent that artificial or natural cause from destroying, being applicable to the 6/10kV direct press type energy-saving and high-pressure batch meter of 1～10kV high-tension line and consumer electricity consumption monitoring, metering.

For reaching above purpose, the technical scheme that the utility model adopted is: this 6/10kV direct press type energy-saving and high-pressure batch meter, by silicon rubber dry type composite bushing, casing, firm banking, the 10kV/100V transformer, Switching Power Supply, the multi-functional active electric energy meter of three-phase tolerance full electronic, the GPRS wireless communication module, lightning arrester constitutes, firm banking is located at the bottom of casing, the 10kV/100V transformer, Switching Power Supply, the multi-functional active electric energy meter of three-phase tolerance full electronic, the GPRS wireless communication module is installed in the casing, before casing, back both sides are fixing last three silicon rubber dry type composite bushings of symmetry respectively, amorphous material current transformer on it is characterized in that fixing on the upper side wall in casing, the center pit of amorphous material current transformer is sleeved on the inner of silicon rubber dry type composite bushing, by the amorphous material current transformer, the big current signal of circuit is converted to the current signal of mA level; All install isolation conversion line plate at the upside of amorphous material current transformer, isolate the conversion line plate and be connected with the amorphous material current transformer by the voltage signal transmission line, voltage signal changes wiring board by isolation and becomes mA level current signal.The utility model is also implemented by following measure: described amorphous material current transformer is established three respectively in forward and backward side, is connected by the upper end of lead with the 10kV/100V transformer near two of 10kV/100V transformer; Described isolation conversion line plate, comprise that the divider resistance summation current transformer is interconnected to constitute, corresponding with the amorphous material current transformer, also respectively establish three in forward and backward side, and interconnect by lead, adopt photoelectricity, electromagnetic isolation technology that high voltage signal is converted to and measure required mA level signal.With big electric current, the mA level current signal of high voltage by obtaining after changing, to sample via synchronous A/D sample circuit, sampled data is passed to main frame, via the host process analysis, obtains real-time circuit operational factor and accumulative total electric flux.When using the utility model, by bolt hole casing is fixed on the cross-arm of electric pole or electric pole with bolt.

The beneficial effects of the utility model are: compare with present 6/10kV electric energy metrical cabinet, its advantage is: one, owing to adopted the little amorphous material current transformer of volume, so overall volume is little, compact conformation, light, can be installed on easily on the high-tension line; Two, because the amorphous material current transformer is the no-voltage mutual inductor, the resistance-type linear unit is adopted in the sampling of voltage signal, voltage transformer (VT) is no longer passed through in obtaining of voltage signal, be not subjected to the restriction of voltage, its measuring voltage wide ranges, can satisfy accuracy requirement in 1kV～10kV voltage range, be tolerance (wide voltage, wide electric current) batch meter truly; Three, because inside becomes an integral body with the related part of primary side with the high-strength insulating material can, secondary side adopts inversion type to install, and can prevent the inner stealing of slave unit fully; Four, owing to the part of interior road circuit and metering and measurement all can be calibrated by specialized equipment, the precision height of deciding integral body of reflection, thus the overall precision height, but the equipment set piece calibration, what help measuring is complete, accurate.

Description of drawings

Fig. 1 cuts open the loam cake schematic top plan view for the utility model structure.

Fig. 2 analyses and observe enlarged diagram for the utility model along Figure 1A-A.

Fig. 3 isolates the conversion line plate for the utility model and arranges synoptic diagram.

Fig. 4 is the utility model three-phase tolerance full electronic multifunctional electric energy meter, Switching Power Supply, GPRS wireless communication module connection principle synoptic diagram.

Embodiment

Make the utility model with reference to accompanying drawing 1,2,3,4.This 6/10kV direct press type energy-saving and high-pressure batch meter, by silicon rubber dry type composite bushing 1, casing 2, firm banking 10,10kV/100V transformer 6, Switching Power Supply 8, the multi-functional active electric energy meter 5 of three-phase tolerance full electronic, GPRS wireless communication module 7, lightning arrester 4 constitutes, firm banking 10 is located at the bottom of casing 2,10kV/100V transformer 6, Switching Power Supply 8, the multi-functional active electric energy meter 5 of three-phase tolerance full electronic, GPRS wireless communication module 7 is installed in the casing 2, before casing 2, back both sides are the fixing silicon rubber dry type composite bushing 1 of going up of symmetry respectively, it is characterized in that in casing 2 before, the fixing respectively amorphous material current transformer 9 of going up in rear wall top, the center pit of amorphous material current transformer 9 is sleeved on the inner of silicon rubber dry type composite bushing 1, the big current signal of circuit is converted to the current signal of mA level by amorphous material current transformer 9; All install isolation conversion line plate 3 at the upside of amorphous material current transformer 9, isolate conversion line plate 3 and be connected with amorphous material current transformer 9 by the voltage signal transmission line, voltage signal changes wiring board 9 by isolation and becomes MA level current signal.Described amorphous material current transformer 9 is established three respectively in forward and backward side, is connected by the upper end of lead with 10kV/100V transformer 6 near two of 10kV/100V transformer 6; Described isolation conversion line plate 3, comprise that divider resistance 3a summation current transformer 3b is connected to form, corresponding with amorphous material current transformer 9, preceding, rear side is also respectively established three, and interconnect by corresponding lead, adopt photoelectricity, the electromagnetic isolation technology is converted to high voltage signal and measures required mA level signal, high voltage on the high-tension line, big electric current is by conversion, be converted to the current signal of mA level, sample by synchronous A/D sample circuit then, sampled data is passed to main frame, and synchronous A/D sample circuit reaches and the catenation principle of main frame is a prior art, so not most.

Claims (3)

1, a kind of 6/10kV direct press type energy-saving and high-pressure batch meter, by silicon rubber dry type composite bushing (1), casing (2), firm banking (10), 10kV/100V transformer (6), Switching Power Supply (8), the three-phase tolerance multi-functional active electric energy meter of full electronic (5), GPRS wireless communication module (7), lightning arrester (4) constitutes, firm banking (10) is located at the bottom of casing (2), 10kV/100V transformer (6), Switching Power Supply (8), the three-phase tolerance multi-functional active electric energy meter of full electronic (5), GPRS wireless communication module (7) is installed in the casing (2), preceding at casing (2), back both sides are the fixing silicon rubber dry type composite bushing (1) of going up of symmetry respectively, it is characterized in that in casing (2) before, the fixing respectively amorphous material current transformer (9) of going up in rear wall top, the center pit of amorphous material current transformer (9) is sleeved on the inner of silicon rubber dry type composite bushing (1); All install isolation conversion line plate (3) at the upside of amorphous material current transformer (9), isolate conversion line plate (3) and be connected with amorphous material current transformer (9) by the voltage signal transmission line.

2,6/10kV direct press type energy-saving and high-pressure batch meter according to claim 1, it is characterized in that described amorphous material current transformer (9) establishes three respectively in forward and backward side, be connected by the upper end of lead with 10kV/100V transformer (6) near two of 10kV/100V transformer (6).

3,6/10kV direct press type energy-saving and high-pressure batch meter according to claim 1 is characterized in that described isolation conversion line plate (3), comprises that divider resistance (3a) summation current transformer (3b) is connected to form.

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