CN2229083Y

CN2229083Y - Voltage variable magnetic flux time sharing measurement KWH meter

Info

Publication number: CN2229083Y
Application number: CN 95209186
Authority: CN
Inventors: 徐毅军; 李受; 柏古宽; 周琳
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-29
Filing date: 1995-04-29
Publication date: 1996-06-12
Anticipated expiration: 2005-04-29

Abstract

The utility model is connected with a voltage mutual inductor on the basis of the traditional electric meter. A timing controller is used for switching the tap of the secondary coil of the voltage mutual inductor in the definite time to change the magnetic flux of a voltage iron core to realize the time sharing metering purpose. The utility model has the advantages of high reliability, low cost, long service life, etc.

Description

Voltage becomes magnetic flux type time-sharing measurement watt-hour meter

The utility model relates to a kind of watt-hour meter, and is a kind of by regularly changing the watt-hour meter that magnetic flux is realized time-sharing measurement.

Traditional watt-hour meter, the number of turn of its potential winding and current coil is changeless, and the torque of its rotating disk is directly proportional with voltage, size of current and phasing degree sine (sin ψ), and in view of the above, the dial that drives with rotating disk shows uses electric work, i.e. the electric degree number.

China comes into effect time-sharing measurement electric degree system this year, and is promptly different in the electricity charge of peak of power consumption, middle peak and slack hours.And managerial personnel can not periodically write down huge many electric supply meters every day.Therefore existing watt-hour meter can't use.Present time-sharing measurement watt-hour meter all adopts single-chip microcomputer to realize with software according to the pulse signal of opto-electronic conversion, but because single-chip microcomputer and other integrated packages is withstand voltage all at tens volts, under long-term work voltage and instantaneous overvoltage effect, very easily damage, and cost is also higher, makes penetration and promotion bring very big difficulty.

The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of simple in structure, cost is low, the life-span is long, reliability is high time-sharing measurement watt-hour meter is provided.

The utility model connects a voltage transformer (VT) on traditional watt-hour meter basis, and by a timing controller tap of the secondary coil of voltage transformer (VT) is regularly switched, and realizes the purpose of time-sharing measurement to change voltage iron core magnetic flux.

The principle of technique scheme is:

If the electricity price of peak of power consumption time is X, the electricity price of electricity consumption slack hours is Y, peak Elapsed Time electricity consumption V degree, and ebb electricity consumption time electricity consumption U degree, then total electricity charge Z is:

Z＝VX＋UY

If peak of power consumption time electricity price is the K of electricity consumption slack hours electricity price ₁Doubly, that is:

X＝K ₁Y

Z=VK then ₁Y+UY=(VK ₁+ U) Y

When this just is equivalent to electricity price and is fixed as Y, the electric degree number of peak of power consumption time is many K ₁Doubly.So need only the fast K of rotary speed of chien shih watt-hour meter when peak of power consumption ₁Doubly get final product.

With embodiment the utility model is further described with reference to the accompanying drawings below.

Accompanying drawing is a structural representation of the present utility model.

With reference to accompanying drawing, the utility model is made up of voltage circuit (1), current return (2), rotating disk (3), timing controller (4) and voltage transformer (VT) (5); The potential winding (6) of voltage circuit (2) is access to the secondary coil two ends of voltage transformer (VT) (5); The secondary coil of voltage transformer (VT) (5) is provided with 1～3 tap, and each tap is access to the time switch of timing controller (5) respectively.

The utility model can also be provided with tap in potential winding (6), or sets up secondary coil on voltage iron core (7), and tap or secondary coil are access to timing controller (4).

During the utility model work, at the appointed time with the tap changing of voltage transformer (VT) (5), potential winding (6) obtains different voltage, change of flux, and rotary speed changes thereupon.

Timing controller (4) can adopt existing product, and the product as the American-European gram in Zhuhai City company also can design voluntarily.

The utility model both had been suitable for single-phase electric meter, also was suitable for three-phase kilowatt-hour meter. Through test, have High reliability also has the advantages such as cost is low, the life-span is long in addition, also can be on traditional product Transformation forms.

Claims

1. a voltage becomes magnetic flux type time-sharing measurement watt-hour meter, it is characterized in that being made up of voltage circuit (1), current return (2), rotating disk (3), timing controller (4) and voltage transformer (VT) (5); The potential winding (6) of voltage circuit (2) is access to the secondary coil two ends of voltage transformer (VT) (5); The secondary coil of voltage transformer (VT) (5) is provided with 1～3 tap, and each tap is access to the time switch of timing controller (5) respectively.

2. 1 described voltage becomes magnetic flux type time-sharing measurement watt-hour meter as requested, it is characterized in that and can also be provided with tap in potential winding (6), or set up secondary coil that on voltage iron core (7) tap or secondary coil are access to timing controller (4).