CN2716844Y

CN2716844Y - Multifunctional electric larceny proof electric power monitor

Info

Publication number: CN2716844Y
Application number: CN 200420017491
Authority: CN
Inventors: 刘建国; 欧驰云
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-18
Filing date: 2004-03-18
Publication date: 2005-08-10
Anticipated expiration: 2014-03-18

Abstract

The utility model discloses a multifunctional electric larceny proof electric power monitor, comprising a power circuit and a single chip machine. The periphery of the single chip machine is provided with an accumulator, a clock circuit and a switch circuit for protecting the equipment. The utility model is characterized in adopting a current mutual inductor and a voltage mutual inductor to respectively collect the amperage and the voltage of each phase wire, and the current mutual inductor is used to collect the amperage of a zero line G. The collected amperage and voltage are respectively sent to the analogue-to-digital converter of the single chip machine which makes processes according to a mathematical manipulation model. After the calculation, the loaded voltage, electric current, current direction and degrees of unbalanced electric current are obtained to judge the loaded property and state as well as the state of the electricity of lines being thieved and leaked or not. The judged loaded property and state as well as the state of the electricity being thieved and leaked or not are displayed by a display via a display circuit and output from an output interface. The utility model has the advantages of being able to record and analyze the live and actual state of electric larceny, to realize remote monitoring, and to properly monitor various ways of electric larceny, etc.

Description

Multi-functional anti-electricity-theft power monitoring equipment

Technical field:

The utility model relates to a kind of multi-functional anti-electricity-theft power monitoring equipment.

Background technology:

At present, at various electricity filching behaviors, for example: overload operation is sneaked current, use wire jumper, doubling, short circuit, use mode stealings such as electrical burglary, therefore it is also varied anti-electricity-theft device to occur on the market, their each have their own characteristics, have plenty of the structure of ammeter or transformer is improved, have plenty of by means such as electronics measure monitors and undertaken, power consumption at present large electricity consumer is more, if there is electricity filching behavior, the loss that may cause is bigger, has occurred the anti-electricity-theft monitor that utilizes technology such as electronic monitoring to produce now, the shortcoming that exists has: when stealing takes place, can't measure power-steeling quantity; Can't differentiate the electricity consumption quality of balance, can't differentiate, monitor for stealing modes such as wire jumper commonly used, short circuits; Anti-electricity-theft pick-up unit in the market can only monitor the electricity filching behavior about 50%, still has the electricity filching behavior about 50% can't realize monitoring.

Summary of the invention:

The purpose of this utility model is to provide a kind of can determine the multi-functional anti-electricity-theft three-phase power monitoring device that circuit has or not tax evasion electricity situation and determines the classification of tax evasion electricity and occur in the electricity filching behavior on which root phase line.The purpose of this utility model is to realize like this, described multi-functional anti-electricity-theft power monitoring equipment, comprise power circuit and single-chip microcomputer, the periphery of single-chip microcomputer comprises storer and clock circuit and on-off circuit that equipment is protected etc., its design feature is gathered the magnitude of current and the voltage of each phase line respectively for adopting current transformer and voltage transformer (VT), and current transformer is gathered the magnitude of current of zero line G; The above-mentioned magnitude of current of gathering, voltage are given the analog to digital converter in the single-chip microcomputer respectively, handle according to the mathematical operation model by single-chip microcomputer, calculate voltage, electric current, direction of current, the current imbalance degree of load, character, state, the circuit that determines load has or not tax evasion electricity situation, the character of the load that is determined, state and have or not tax evasion electricity situation to show and output interface output through the display of display circuit.The purpose of this utility model also can be achieved through the following technical solutions, described multi-functional anti-electricity-theft power monitoring equipment, its characteristics are when using in the monitoring device of three-phase and four-line, current transformer and voltage transformer (VT) are respectively got three, gather the magnitude of current and the voltage of three-phase electricity Na, Nb, Nc respectively, and the magnitude of current of a current transformer collection zero line G; The magnitude of current of above-mentioned collection, voltage are given single-chip microcomputer or analog to digital converter respectively.Described multi-functional anti-electricity-theft power monitoring equipment, its characteristics are that current transformer and voltage transformer (VT) are respectively got one, gather the magnitude of current and the voltage of single-phase phase line respectively when using in the monitoring device of single-phase two-wire; And the magnitude of current of a current transformer collection zero line G; The magnitude of current of above-mentioned collection, voltage are given single-chip microcomputer or analog to digital converter respectively.Advantage of the present utility model is: it can collect current transformer and voltage transformer (VT) the magnitude of current and voltage on the phase line, and the current transformer of an increase is gathered the magnitude of current of zero line G, give single-chip microcomputer respectively, handle according to the mathematical operation model under the various situations by single-chip microcomputer, thereby calculate voltage, electric current, direction of current, the current imbalance degree of load, analysis-by-synthesis by each parameter, determine character, the state of load, determine circuit and have or not tax evasion electricity situation, determine the classification of tax evasion electricity.And can enlarge monitoring range, improve the reliability of equipment.The utlity model has real-time, the actual stealing situation of energy record analysis, working stability is reliably directly perceived, and digitizing and intelligent precision are higher, can realize remote monitoring, various stealing mode fundamental surveillances are put in place, and work efficiency is higher, and advantages of simple structure and simple.The alternating current that can not only be used for three-phase and four-line, and can also be used for the alternating current of single-phase two-wire.

Description of drawings:

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment:

Below in conjunction with accompanying drawing the utility model is elaborated:

As shown in Figure 1 and Figure 2, electric circuit characteristic of the present utility model comprises power circuit and single-chip microcomputer, power circuit can provide circuit working required voltage, voltages such as 3V, 5V generally are provided, single-chip microcomputer adopts various general single-chip microcomputers at present, its periphery comprises storer and clock circuit and on-off circuit that equipment is protected etc., its design feature is gathered the magnitude of current, direction of current and the voltage of each phase line respectively for adopting current transformer and voltage transformer (VT), and the magnitude of current of a current transformer collection zero line G; The above-mentioned magnitude of current of gathering, voltage are given single-chip microcomputer respectively, handle according to the mathematical operation model by single-chip microcomputer, calculate voltage, electric current, direction of current, the current imbalance degree of load, the character, the circuit that determine load have or not tax evasion electricity situation, and the character of the load that is determined shows and output interface output with the display that has or not tax evasion electricity situation through display circuit.In the alternating current transmission line for three-phase and four-line, current transformer and voltage transformer (VT) are respectively got three, gather the magnitude of current, direction of current and the voltage of three-phase electricity Na, Nb, Nc respectively, and the magnitude of current of a current transformer collection zero line G; The magnitude of current of above-mentioned collection, voltage are given single-chip microcomputer respectively.And in the alternating current transmission line for single-phase two-wire, current transformer and voltage transformer (VT) are respectively got one, gather the single-phase magnitude of current, direction of current and voltage respectively, and the magnitude of current of a current transformer collection zero line G; The magnitude of current of above-mentioned collection, voltage are given single-chip microcomputer respectively.The technology that above-mentioned mathematical operation model can be realized for those skilled in the art.Described output interface can output to communication apparatus, as wireless module carry out remote data transmission, again by server process, demonstration, warning etc.As shown in Figure 2, be a concrete embodiment of the alternating current transmission line of three-phase and four-line, threephase current transformer is respectively CTA, CTB, CTC, and voltage transformer (VT) is respectively PT3, PT2, PT1, and current transformer CTG gathers the magnitude of current of zero line G; Power circuit comprises that elements such as integrated chip V1, V2, V3, V4 and peripheral element resistance, electric capacity, diode constitute, and can provide circuit working required voltage, and voltages such as 3V, 5V generally are provided, and is the technology that those skilled in the art can realize; Single-chip microcomputer M1, periphery comprise that elements such as store clock integrated chip IC3, IC15, IC14 and peripheral element resistance, electric capacity, diode constitute, the technology that the circuit that these integrated chips and peripheral element constitute can be realized for those skilled in the art; Display circuit comprises that elements such as light emitting diode or LCDs, integrated chip 08,09 and peripheral element resistance, electric capacity, diode, triode constitute the technology that this display circuit also can be realized for those skilled in the art.The utility model key point is an acquisition technique, be the magnitude of current and the voltage that Current Transformer and voltage transformer (VT) are gathered three-phase electricity respectively, and the magnitude of current of a current transformer collection zero line G, then according to voltage, electric current, direction of current, current imbalance degree, the character, the circuit that determine load have or not tax evasion electricity situation, and the character of the load that is determined shows and output interface output with the display that has or not tax evasion electricity situation through display circuit.

Claims

1, a kind of multi-functional anti-electricity-theft power monitoring equipment, comprise power circuit and single-chip microcomputer, the on-off circuit that the periphery of single-chip microcomputer is connected with storer and clock circuit and equipment is protected, it is characterized in that adopting current transformer and voltage transformer (VT) to gather the magnitude of current and the voltage of each phase line respectively, and current transformer is gathered the magnitude of current of zero line (G); The above-mentioned magnitude of current of gathering, voltage are given the analog to digital converter in the single-chip microcomputer respectively, handle according to the mathematical operation model by single-chip microcomputer, calculate voltage, electric current, direction of current, the current imbalance degree of load, character, state, the circuit that determines load has or not tax evasion electricity situation, the character of the load that is determined, state and have or not tax evasion electricity situation to show and output interface output through the display of display circuit.

2, multi-functional anti-electricity-theft power monitoring equipment according to claim 1, when it is characterized in that using in the monitoring device of three-phase and four-line, current transformer and voltage transformer (VT) are respectively got three, gather the magnitude of current and the voltage of three-phase electricity (Na), (Nb), (Nc) respectively, and the magnitude of current of a current transformer collection zero line (G); The magnitude of current of above-mentioned collection, voltage are given single-chip microcomputer or analog to digital converter respectively.

3, multi-functional anti-electricity-theft power monitoring equipment according to claim 1, when it is characterized in that using in the monitoring device of single-phase two-wire, current transformer and voltage transformer (VT) are respectively got one, gather the magnitude of current and the voltage of single-phase phase line respectively; And the magnitude of current of a current transformer collection zero line (G); The magnitude of current of above-mentioned collection, voltage are given single-chip microcomputer or analog to digital converter respectively.