CN201051124Y

CN201051124Y - Radio remote power reading measurement and analysis device

Info

Publication number: CN201051124Y
Application number: CNU2007201010449U
Authority: CN
Inventors: 高峰; 高勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-12
Filing date: 2007-04-12
Publication date: 2008-04-23
Anticipated expiration: 2017-04-12

Abstract

The utility model discloses a wireless distant-reading electrical measuring and analytical device, relating to an electrical measuring and analytical device. The mainly technical characteristics of the device are that primary voltage receiving terminals of an electric meter are respectively connected with three-phase four line power supplies, the secondary output end of an A, B, C relative clamp type transformer is connected with the current input end of the electric meter, a signaling port PIN13 and a signaling port PIN14 of the electric meter are connected with a serial port of a PLC module which is connected with a serial port of a GPRS module, one end of a power supply module is connected with the input power supply of the electric meter, and the other end respectively provides power to the PLC module and the GPRS module. The utility model is capable of conveniently mounting an electrical analysis system when power is uninterrupted, moving to any measuring places according to requirements, and achieving wireless remote meter-reading to provide convenience for computers to proceed analyzing and to process the read data in the next step.

Description

The wireless electric energy metrical analytical equipment of far copying

Technical field

The utility model relates to the device that a kind of electric energy metrical is analyzed.

Background technology

Background technology relates to the two large divisions:

(1), the present method for testing and analyzing that adopts of professional economize on electricity company

Specialty economize on electricity company is to be the electricity consumption big customer save electricity that energy conservation potential is arranged by energy-saving device is installed, and their professional operation is generally:

A, the client who has economize on electricity to require is carried out field investigation, judge to have or not energy conservation potential, select the economize on electricity occasion;

After b, the power failure, the three-phase electric energy metering device is installed, is begun to make a copy of the preceding power consumption index of economize on electricity in selected economize on electricity occasion;

C, installation energy-saving device;

D, continue to make a copy of the power consumption index of installing behind the energy-saving device;

E, the power consumption index of installing before and after the energy-saving device is compared calculating, determine amount of electricity saving and power saving rate, the assessment power savings;

F, economize on electricity company's sell goods or obtain a certain proportion of economize on electricity income.

Above-mentioned running has following deficiency in operating process, the installation that must have a power failure when the three-phase electric energy metering device is installed generally can only entrust the client to check meter voluntarily in addition, and the time of checking meter just is difficult to be guaranteed with the accuracy rate of checking meter, and influences correct calculation economize on electricity income.Even draw antipodal wrong conclusion sometimes.

(2), the existing power utility check technological means of power supply department

Power supply department is when carrying out power utility check to power consumer, and checking user's electric power meter accuracy is one of most important link.When checking electric power meter, look into secondary line and whether connect rightly, in case of necessity even will use the electric energy metrical on-site calibrator, could judge whether charging electric meter correctly measures.And this process is very loaded down with trivial details, requires the staff that higher comprehensive speciality quality is arranged.

In addition, in case the user around more electric power meter stealing, unless that power supply department is arrested is existing, otherwise can't investigate user responsibility.The existing way power of can only sending someone is strengthened checking that such way expends a large amount of manpower and materials, has little effect more.

Summary of the invention

The purpose of this utility model provides a kind of wireless electric energy metrical analytical equipment of far copying, the electric energy metrical analytic system is installed under situation about not having a power failure easily, can move to any measurement place as required arbitrarily, also can realize wireless long-distance meter-reading, provide convenience for next step computing machine carries out analyzing and processing to the data of copying back.

The technical solution adopted in the utility model is: the primary voltage terminals of watt-hour meter 1 are connected with three-phase four-wire power respectively, and A, B, C phase wafer type mutual inductor secondary output terminal are connected with the current input terminal of watt-hour meter 1; Watt-hour meter 1 communication port (RS485) PIN13, PIN14 meet the serial ports A of PLC module 2; The serial ports B of PLC module 2 connects the serial ports of GPRS module 2, and an end of power module 4 connects the input power supply of watt-hour meter 1, and the other end is given PLC module 2 and 3 power supplies of GPRS module respectively.

Compare with existing background technology, the beneficial effects of the utility model are:

1, current transformer has adopted open type, and promptly iron core can be opened, and a lead can be sandwiched in the ring like this, and realizing exempts to have a power failure installs;

2, because dismounting is very convenient, just can move arbitrarily naturally, satisfy the needs in different measuring place;

3, the backstage analytic system of personalization behind the remote meter reading, the technological means that helps economize on electricity company and power supply department increase to deal with problems has improved work efficiency.

For economize on electricity company, utilize the data of far copying, before energy-saving device is installed, can judge energy conservation potential, so that accurately decision-making; After energy-saving device is installed, can accurately calculate power savings.

For power supply department, utilize the utility model to check the operation conditions of electric energy meter easily at the scene, having good luck with original field erected electric energy meter compares, as it is excessive to come in and go out, and illustrates that then the subscriber's meter meter goes wrong, and aftertreatment need ascertain the reason.This process does not need very strong professional knowledge level, and is convenient and easy; Simultaneously, as a kind of effective tool, can be used for investigating and prosecuting stealing, remote supervisory, real time record to the utility model.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a workflow diagram of the present utility model.

Embodiment

The utility model is mainly specialty economize on electricity company service, also can be for power supply enterprise serve, and background system has two kinds of read modes to select for the user.One is the mobile phone read mode, and it two reads analytical model for computing machine.After the reading of data, be energy-conservation company service part, emphasis is how assess energy conservation potential, estimates amount of electricity saving and power savings; Be the part of power supply department service, major function is in order to investigate and prosecute transgression for using electricity and stealing easily.

As shown in Figure 1, the connected mode of watt-hour meter 1, PCL module 2, GPRS module 3 and power module 4 is: the primary voltage terminals of watt-hour meter 1 are connected with three-phase four-wire power respectively, and A, B, C phase wafer type mutual inductor secondary output terminal are connected with the current input terminal of watt-hour meter 1; Watt-hour meter 1 communication port (RS485) pin PIN13, PIN14 meet the serial ports A of PLC module 2; The serial ports B of PLC module 2 connects the serial ports of GPRS module 2, and an end of power module 4 connects the input power supply of watt-hour meter 1, and the other end is given PLC module 2 and 3 power supplies of GPRS module respectively.

As shown in Figure 2, workflow of the present utility model is finished according to following three step programs:

Subroutine 1 is carried out the initialization of watt-hour meter 1 and PLC2 communication program earlier according to 645 stipulations, judge whether communication is normal, if undesired, reinitializes again, if communication is normal, PLC2 then deposits first section internal memory in according to rule schemata ammeter data;

Subroutine 2 is called in first section internal memory, carries out Data Format Transform, and the calculating of economizing on electricity again is converted to ASCII character at last, and it is stand-by that ASC II sign indicating number deposits second section internal memory in;

Subroutine 3, PLC module 2 adopt AT instruction initialization GPRS module, judge whether PLC module and GRPS module communication be normal, as undesired, reinitializes; If communication is normal, call in second section internal storage data, send with the AT instruction again, receive with SMS or computing machine at last.

The utility model solves exempts from the embodiment that has a power failure and install:

Complete 380/220V low pressure three-phase and four-line electric energy metered system comprises electric energy meter, current transformer, connection terminal, connects lead accordingly.Existing electric energy metered system is because current transformer requires punching to install, and promptly lead must pass the iron core-closed ring that surrounds of current transformer in accordance with regulations, and such work must have a power failure and carry out.

In the utility model, three-phase electric energy meter will normally measure and must guarantee correct three-phase voltage and the electric current of inserting.Voltage adopts the Huang of 4 different colours, green, red, unlicensed tour guide's line access, and four kinds of colors are represented different separate and ground wires respectively.The connection terminal of watt-hour meter is connected with zero line with 380V input three-phase firewire respectively, one end of these voltage connecting lines is connected by plug receptacle with electric energy meter, the other end is designed to crocodile clip, can chargedly directly clip to on-the-spot voltage bus or exposed live part and obtain needed each phase voltage of electric energy metrical.

Each phase current obtains by iron core open type current transformer.This Current Transformer Secondary lead inserts electric energy meter in advance when not charged, an iron core lead sandwiching the electricity consumption scene gets final product then.

Solve the embodiment of remote meter reading:

Realize wireless long-distance meter-reading, mainly realize by following module and link.

1, the three-phase and four-line multi-function watt-hour meter that has the RS485 communication port

The three-phase and four-line multi-function watt-hour meter is mainly used to gather parameters such as electric current, voltage, power, power factor, meritorious power consumption, idle power consumption, meritorious maximum demand, idle maximum demand.Multi-function watt-hour meter is realized being connected with the hardware of PLC module by the RS485 communication interface, the RS485 free interface communication of PLC sends the instruction of reading information about power according to the form of GB watt-hour meter stipulations (DL/T645-1997) to ammeter, the three-phase and four-line multi-function watt-hour meter returns 16 system numerical value to PLC after receiving the instruction that contains this machine table number, relies on the DL/T645-1997 stipulations to realize that software connects the purpose that reaches data read and exchange.

2, programmable controller PLC module

Select the PLC module that has free interface communication able to programme for use, this module realizes the collection and the processing capacity of electric quantity data on the one hand, carries out communication by AT instruction and GPRS module on the other hand, the data of user's needs is sent on the mobile phone of appointment or the backstage.At first, PLC free communication mouth sends the instruction of asking for data by the continuous detection of handset of GPRS module, if receive the information that the GPRS module is sent, then PLC begins the module communication with GPRS, and communication protocol is the AT instruction.After PLC resolves command content, send the instruction of reading of data to ammeter, the 16 system watt-hour meter return values that will receive then are through data variation, become the numerical value of binary-coded decimal, simultaneously according to the economize on electricity computing formula, the raw data calculation is the data of customer demand, and again that these are useful binary-coded decimal numerical value is converted to the general ASCII character that mobile phone can be discerned, and the numerical value after reading and changing is inserted in the PLC internal register predefine form in order.At last, the data in the predefine form are added prefix and character separatrix after, utilize the AT instruction data to be sent to the terminal user by the GPRS module.

3, GPRS module

The GPRS module has the RS232 communication port and the AT standard instruction set of standard, can insert the gsm system mobile phone card of mobile communication company, utilizes the mobile phone short message platform of China Mobile's communication to carry out data transmission, has the characteristics of economic and reliable.

The RS232 communication port of GPRS module is connected with the free communication mouth hardware of PLC by the level translator of 232 commentaries on classics 485.

The GPRS module is operated under the GSM mode, is made as English mode for the minimizing data conversion process reduces error code, and AT+CMGS=1 is set.For avoiding refuse messages to disturb, PLC deletes this information after reading the information of GPRS module transmission immediately, and carries out the Delete All instruction after idle 10 minutes.

4, power module

The interchange 380/220V power supply that the electricity consumption collection in worksite arrives can not directly be used for to above each module for power supply.Give each module for power supply after need being converted to suitable direct current by power module.Switching Power Supply is exported two groups of DC voltage, is respectively+24V 0.5A; + 5V, 1.5A ,+24V power supply is given the PLC module for power supply, and+5V power supply is given the GPRS module for power supply.Alternating current input power supplying is obtained from watt-hour meter.

The backstage is analyzed two kinds of possibilities.

Easy scheme: the SMS of directly using an other mobile phone be installed to the on-the-spot measuring apparatus communication of far copying, obtain the data that need.

Prioritization scheme: the computing machine with the backstage is a support, uses configuration software to program, and carries out personalized data collection and analysis.Can directly export following chart and conclusion.

A, the change in voltage curve map in certain period;

B, the electric current change curve in certain period;

Many groups active power, reactive power, power factor, meritorious electric weight, capacity of idle power data analysis and calculating conclusion that C, certain hour are interior at interval are put in the form;

Meritorious maximum demand, idle maximum demand that D, every day or certain hour are interior are at interval listed a table specially;

E, the amount of electricity saving and the power saving rate analytical calculation form that provide especially for economize on electricity company.

More than be a specific embodiments to description of the present utility model.The PLC module section can use single card microcomputer to substitute its function in commercialization, to raise the efficiency, to reduce cost as required.

What use among the utility model embodiment is three-phase and four-line low pressure multifunctional electric energy meter, and the electric energy meter of other model as long as have communication function, equally can be used as ingredient of the present utility model.

Claims

1. the wireless electric energy metrical analytical equipment of far copying, comprise watt-hour meter (1), PLC module (2), GPRS module (3) and power module (4), it is characterized in that: the primary voltage terminals of watt-hour meter (1) are connected with three-phase four-wire power respectively, and A, B, C phase wafer type mutual inductor secondary output terminal are connected with the current input terminal of watt-hour meter (1); Watt-hour meter (1) communication port PIN13, PIN14 connect the serial ports (A) of PLC module (2); The serial ports (B) of PLC module (2) connects the serial ports of GPRS module (2), and an end of power module (4) connects the input power supply of watt-hour meter (1), and the other end is given the power supply of PLC module (2) and GPRS module (3) respectively.