CN2129418Y

CN2129418Y - Changeable electric meter

Info

Publication number: CN2129418Y
Application number: CN 92224563
Authority: CN
Inventors: 唐元时
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-15
Filing date: 1992-06-15
Publication date: 1993-04-07
Anticipated expiration: 2002-06-15

Abstract

The utility model relates to a changeable electric meter, which belongs to a metering instrument in the electricity consumption and comprises a measurer, a programming parameter memory, an accumulator of electrical degrees and electricity fees and a display. The utility model changes the setting fee rating into the floating fee rating on the basic of the existing 'charging by time ' function of meters. The utility model is characterized in that a calculator to calculate the real-time floating fee rating is added in the circuit construction, and a measurer for the real-time power factor cos phi is added in the measurer. The utility model can calculate the bonus and punish for the electricity fee of powerless compensation according to the real-time power factor, and can charge in real-time by the no-stage high-price floating fee rating to the over-quota electricity consumption according to the exceeding degree.

Description

Changeable electric meter

The utility model belongs to electric power electricity consumption measuring instrument.

Its rate of existing Changeable electric meter has only the numeric ratio of several grades of settings more rough, especially carries out to raise the price to the electricity charge rewarding and punishing of reactive-load compensation with to the volume electricity consumption of transfiniting and does not also accomplish in real time at present, charges subtly.

The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of and calculates the electricity charge rewarding and punishing of reactive-load compensation and the ammeter that the volume electricity consumption of transfiniting is carried out real time billing according to its degree that surpasses by stepless unsteady high price rate by realtime power factor.

The utility model comprises measuring appliance, the program parameters storer, electric degree electricity charge integrating instrument, display, it in compatibility on the basis of existing " time-shared charge " ammeter function, become the setting rate and be floating rate, the primary structure feature is to have increased a counter that calculates real-time floating rate, and has increased the measuring appliance of realtime power factor in measuring appliance.

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is a routine reference circuit

Among Fig. 1:

Square frame 1 is the measuring appliance of real-time active power P

Square frame 2 is the measuring appliance of the COS φ of realtime power factor

Square frame 3 is adjusted the factor alpha electric power for the day part electricity price

Limit P _eThe storer of price raising index β of electricity consumption transfinites

Square frame

4,5 is a wave filter

Square frame 6 is the counter of floating rate δ

Square frame 7 is the integrating instrument of electric degree Kwh

Square frame 8 is the arithmetical unit of electricity charge $

Square frame 9 is a display

K is selector switch or button

Adopting single-chip microprocessor system is the better mode of implementing Fig. 1 circuit, and Fig. 2 is a routine reference circuit.The realization of Changeable electric meter function now is described in conjunction with Fig. 2.

Active power P through the electric parameters transducer input _AWith power factor COS φ _ATwo real time modelling amounts convert two digital quantity P to by two every 10ms once sampling of ADCO804 _DWith COS φ _DSend cpu chip 8051, this partly is equivalent to square frame 1 among Fig. 1, square frame 2.Input keyboard B interface chip 8279, cpu chip 8051 and storer 6264 constitute one about Pe, α, and this part is square frame 3 among Fig. 1 the programmable memory of β.8051 calculate the per second mean value of P.COS φ, promptly carry out digital filtering, and the result is stored in

internal register

4,5, and this part is the

square frame

4,5 of Fig. 1.8051 couples of Pe that are stored in 6264, α, β and be stored in P in itself

internal register

4,5, COS φ press δ=f(P/Pe, COS φ, α, β) concern once at that time floating rate δ of calculating p.s., and result of calculation is refreshed internal register 6.This partly is the square frame 6 among Fig. 1.Go out electricity Kwh=∑ P. △ t(△ t=1 second=1/3600 o'clock with content in the internal register 4 through totalizer A accumulative total 8051 p.s.s) and the result refreshed internal register 7, this partly is the square frame 7 among Fig. 1.Also the content of

internal register

4 and 6 is carried out for 8051 p.s.s integrating add up accumulative total electricity charge ∑s (δ .P. △ t) (△ t=1 second=1/3600 hour) and accumulated result refreshed internal register 8.This part is the square frame 8 of Fig. 1.Button G among Fig. 2, interface chip 8155, cpu chip 8051RAM chip 6264, charactron DG connect into and are equivalent to K and square frame 9 among Fig. 1, in order to select to show rate δ at that time, accumulative total electric degree Kwh, accumulative total electricity charge $, and P at that time, COS φ, Pe, α, β.EPROM chip 2764 and RAM chip 6264 are each P.COS φ constantly of record, and δ and the various electricity consumption situation curves of printing provide enough memory capacity.So far the function of this Changeable electric meter is achieved.

Advantage of the present utility model:

Pressure to the electricity consumption that exceeds the quata is rationed the power supply, this table provides a kind of effective means in the mode of the fine of raising the price immediately, it is than existing operating a switch, tripping operation more can be transferred the initiative that the user rations the power supply voluntarily, can reduce and avoid the loss and the inconvenience that bring because operating a switch and tripping, also make the user of the electricity consumption that do not exceed the quata avoid involving.

Because the utility model then calculates rewarding and punishing or collects the principle that the idle electricity charge more meet " time-shared charge " than the aggregate-value by average power factor or idle electric degree by the electricity charge rewarding and punishing of the instantaneous value calculating reactive-load compensation of power factor.

The utility model adapt to basic unit's supply station and the user between do not possess the environment for use of system communication opertaing device, very practical easy popularization.

Claims

1, a kind of electricity consumption state measurement device that comprises, the program parameters storer, electric degree, electricity charge integrating instrument, the Changeable electric meter of display, it is characterized in that: also have a counter that calculates real-time floating rate of each moment, the input end of this counter is communicated with electricity consumption state measurement device and program parameters storer, and output terminal is connected with electricity charge integrating instrument.

2, according to the described Changeable electric meter of claim 1, it is characterized in that: have a realtime power factor measuring appliance that the data of calculating rate are provided to the rate counter.

3, according to the described Changeable electric meter of claim 1, it is characterized in that: have the measuring appliance that is used for measuring indirectly realtime power factor that the data of calculating rate are provided to the rate counter.

4, according to the described Changeable electric meter of claim 1, it is characterized in that: the rate counter adopts Single Chip Microcomputer (SCM) system.