CN200996971Y - Composite electric-energy managing system of load control and multiplexing time-sharing charging - Google Patents

Composite electric-energy managing system of load control and multiplexing time-sharing charging Download PDF

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Publication number
CN200996971Y
CN200996971Y CN 200620155301 CN200620155301U CN200996971Y CN 200996971 Y CN200996971 Y CN 200996971Y CN 200620155301 CN200620155301 CN 200620155301 CN 200620155301 U CN200620155301 U CN 200620155301U CN 200996971 Y CN200996971 Y CN 200996971Y
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China
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module
electric energy
meter
time
main control
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CN 200620155301
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王政
张东进
刘伟俊
刘继荣
王大勇
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GUANGZHOU ZHIGUANG ELECTRIC CO Ltd
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GUANGZHOU ZHIGUANG ELECTRIC CO Ltd
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Abstract

An electric power compound control system with a load control and a time-sharing charge. The system is characterized in that comprises a main control module, a data acquisition module, a time module, an electric meter reading module, an execution module, a display module, a communication module, a keyboard control module and a power supply module. The data acquisition module, the time module, the electric meter reading module, the execution module, the display module, the communication module and the keyboard control module are also connected with the main control module and the power supply module; the electric meter reading module is connected with the pulse output port of each electric meter in the electric network.

Description

Load control and multi-channel time-shared charge electric energy multiple control system
Technical field
The utility model relates to the quantity of electricity of power industry to be measured and the electric energy management technology, particularly a kind of load control and multi-channel time-shared charge electric energy multiple control system.
Background technology
In recent years, along with continuing to bring out of new technology, great variety had taken place in the product structure of electric energy meter.The electric energy meter kind has reached hundreds of at present, and yearly capacity is about 200,000,000, and market capacity is greatly about 8,000 ten thousand~9,000 ten thousand.Develop first electric energy meter voluntarily so far from China, the electric energy meter product has experienced for several times and has updated, particularly in recent years for the electric energy meter production development is synchronous in the world, no matter be technical merit, production level, or qualitative leap has all taken place in aspects such as product quality, new design, the electric energy meter product of new function comes out one after another: from the induction type electric energy meter to the electronic electric energy meter, from the electric energy meter of single billing function to many rates, multifunctional electric energy meter, from relying on manual metering to remote automatic meter reading, the IC-card electric energy meter, multiuser electric energy meter, modular electric energy meter is also succeeded in developing in succession and is put into production and use.Electric energy meter also from low value-added to the high added value transition, technology content increases greatly.Electric energy meter no longer only exists as single instrument, by single metering meter-reading function to modularization, intellectuality, multi-functional, systematization and development in pluralism.At present, the market share of China's electric energy meter is that induction type and electronic type six or four are divided into basically, but electronic electric energy meter presents the trend that further develops.And it is the most powerful with many rates, the multifunctional electric energy meter impetus in electronic electric energy meter.Multi-rate electric energy meter accounts for 4%~5% of the whole electric energy total market size greatly, sales volume 4,000,000~5,000,000; Multifunctional electric energy meter accounts for 1%~2% of total amount greatly, about 2,000,000 of sales volumes.The long-life type portion rises to some extent in induction type electric energy meter, and has become the main flow in market.But at present, the still old-fashioned electric energy meter that most factories and enterprise use.
On the other hand, time-shared charge has been realized the peak valley mechanism of electricity price, utilizes economic leverage to impel the user initiatively to take the avoiding apex filling vale measure virtually, promotes the electric power balanced production, balanced electricity consumption; Can reduce the pressure of peak hours system, improve loading coefficient, make full use of electrical network low ebb electric weight, performance is sent out, the ability of power-supply unit, obtain remarkable economic efficiency, therefore, along with time-shared charge begins on a large scale in China, the enforcement of long-time span, corresponding ammeter improvement project is also urgent day by day has put on schedule; The subject matter that faces at present is that old-fashioned electric energy meter is transformed, and achieves the effect of time-shared charge, improves power consumption efficiency.The existing energy management device of China equipment that generally just the electric power data acquisition stores processor reaches and main website carries out the teledata exchange, and the intelligence table of being managed that must have RS485 communication interface or other communication interfaces at present.Owing to need connect 20~30 usually, speed is slow and need can realize browsing and analyzing of data by other equipment and software.The function of many rates, multifunctional electric energy meter then also only rests on the independent route survey basis.So providing a kind of can transform existing old-fashioned electric energy meter effectively, realize that simultaneously the electric energy multiple control system that a plurality of electric energy meters is carried out control of electric weight load and multi-channel time-shared charge function has important practical significance.
The utility model content
The purpose of this utility model is to overcome the shortcoming and defect of prior art, provide a kind of simple to operate, easy to use, can realize electrical measurement such as voltage, electric current, power factor, frequency, active electrical degree, idle electric degree, harmonic wave and load control simultaneously and manage a plurality of watt-hour meter that do not possess the time-shared charge function simultaneously, the load of functions such as it time-shared charge that possesses multiple rate scale, requirement statistics, load excision is controlled and multi-channel time-shared charge electric energy multiple control system.
The purpose of this utility model is achieved through the following technical solutions: a kind of load control and multi-channel time-shared charge electric energy multiple control system, comprise main control module, data acquisition module, time module, meter-reading module, execution module, display module, communication module, Keyboard Control module, power module, described data acquisition module, time module, meter-reading module, execution module, display module, communication module, Keyboard Control module are connected with main control module and power module simultaneously, and described meter-reading module is connected with the pulse output interface of each ammeter in the electrical network.
Described main control module comprises single-chip microcomputer, ferroelectric memory, house dog and peripheral circuit, and described ferroelectric memory, house dog and peripheral circuit are connected with single-chip microcomputer; Described single-chip microcomputer comprises controller kernel, data-carrier store, program storage, serial ports, A/D, D/A conversion chip, and described serial ports is connected with communication module.
Described data acquisition module comprises current transformer, voltage transformer (VT), amplifying return circuit and electric energy measure chip, described current transformer, voltage transformer (VT) are connected to electric energy measure chip by amplifying return circuit, and electric energy measure chip is by Serial Peripheral Interface (SPI) (SPI) communication that is connected with main control module.
Described meter-reading module is made up of towards acquisition circuit direct current 24 deep-sited pulses of N road, and Signal Spacing is all realized by the photoelectricity coupling in each pulse collection loop.
A kind of load control and multi-channel time-shared charge electric energy multiple control method that is realized by said system comprises the steps---
(1) simultaneously by the signal acquisition module and the meter-reading module acquisition data of system, described signal acquisition module is gathered electric quantity signals such as line voltage distribution, electric current, frequency; Described meter-reading module is gathered the pulse that each road ammeter sends.
(2) utilize main control module to calculate the data that obtained with analysis, judge the electric weight index, and overload is controlled; Simultaneously, the statistics by the pulse number that on a time period each normal pulsed formula ammeter transmitted, calculate and storage, obtain each road totally electric degree value and corresponding cost, make it possess the time-shared charge function of multiple rate scale; Judge whether the electric degree value exceeds standard and carry out corresponding the processing.
Described step (1) specifically can be: the signal of signal acquisition module collection is passed to main control module with the data mode of 24 bit complements after electric energy chip is handled; Simultaneously, each the road electrical energy pulse that will gather of meter-reading module is sent to main control module after removing shake, counting.
Bring device interior into for avoiding switching value that the scene is disturbed, described meter-reading module imports the pulse (switching value) that collects into main control module after the photoelectricity coupling is isolated.
Described step (2) specifically can comprise the steps:
(2-1) to the data of 24 bit complement forms decode, digital filtering, calculating, compensation, with the three-phase voltage that obtains, electric current, just/oppositely meritorious, just/oppositely idle, power factor, frequency, just/real time data of electric weight indexs such as reverse active electrical degree, just/reverse idle electric degree, harmonic wave shows by display module with decimal system form.
(2-2) whether each electric weight index is exceeded the value of setting and carry out logic determines; In this way, give a warning according to user's setting, or directly by the corresponding load of execution module control external circuit excision.
(2-3) main control module calculates each road pulse electric degree, according to the time at that time of extracting from time module, obtains the accumulative total expense of each road pulse electric degree and this machine active electrical degree; Upgrade, preserve corresponding day, the moon, total energy consumption and cost value, and show by display module.
(2-4) whether each road pulse electric degree and this dynamo-electric degree are exceeded standard or reach certain limit value (user is according to the actual conditions setting) carry out logic determines, in this way, be provided with according to the user and give a warning, or directly by the corresponding load of execution module control external circuit excision.
Action principle of the present utility model is: utilize control of this load and multi-channel time-shared charge electric energy multiple control system realizing three-phase voltage, electric current, just/oppositely meritorious, just/oppositely idle, power factor, frequency, just/reverse active electrical degree, just/reverse idle electric degree, the real-time measurement and the demonstration of harmonic wave, in the time of functions such as overload protection, gather the pulse output that other each roads do not have the billing function ammeter by meter-reading module, it is carried out the time-shared charge management and calculates, these watt-hour meter that do not possess time-shared charge function time of carrying out on a time period is provided with (peak, paddy, flat, peak-to-peak etc.) with the setting of chargeing, statistics by the pulse number that on a time period each ammeter transmitted, calculate and storage, obtain its day, month, the full and accurate data of total energy consumption and corresponding expense make it possess the time-shared charge function of multiple rate scale; And can in time find the electric load fault as basic basis for estimation, in time get rid of.
The utility model has following advantage and effect with respect to prior art:
(1) saves cost, be beneficial to transformation
Utilize office terminal of native system can manage N platform pulsed ammeter simultaneously, actual effect is equivalent to N+1 platform multi-rate electric energy meter (N 〉=24), all data all can read by communication, greatly save cost and utilized existing equipment to the full extent, all data all can read by communication, can be effectively applied to the existing extensive ammeter that exists is transformed, economic benefit is very obvious.
(2) full electrical measurement function
Native system is when realizing the multi-channel time-shared charge electric energy management, also possess to any circuit three-phase voltage wherein, electric current, just/oppositely meritorious, just/oppositely idle, power factor, frequency, just/oppositely active electrical degree, just/ability of reverse idle electric degree, harmonic measure, thereby realize the emphasis of important line is monitored and security control.
(3) has the failure removal ability
According to user's setting, can realize faulty line, or cross the automatic excision of energy consumption circuit.
(4) real time data shows on the spot
Native system all can show in real time with the total data of the pulsed ammeter of being managed, and does not need any other equipment and software, makes things convenient for user and staff to grasp first-hand information rapidly.
(4) communication speed is fast
General RS485 communication interface (19200bps) is used in the native system office terminal, calculate and handle because the data that electric energy meter is uploaded in the electrical network have all been finished in the native system office terminal, data volume is little, and only need and the office terminal, rather than communicate by letter with N platform electric energy meter respectively, number of communications and call duration time all have suitable reducing, and have improved communication speed greatly.
(5) antijamming capability is strong
Electric energy meter only is connected by the pulse output end mouth in native system office terminal and the electrical network, photoelectric coupled device by pulse signal acquisition module inlet, input signal has been carried out physical isolation (isolation voltage 1500V), when improving the device security performance, antijamming capability also is greatly improved.
Description of drawings
Fig. 1 is the structural representation of the utility model system.
Fig. 2 is system shown in Figure 1 and the outside synoptic diagram that is connected.
Fig. 3 is the meter-reading module workflow diagram of system shown in Figure 1.
The timesharing calculation flow chart of Fig. 4 the utility model system.
Fig. 5 is the structural representation of the data acquisition module of system shown in Figure 1.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
Fig. 1 and Fig. 2 show concrete structure of the present utility model, the utility model is used for the electric quantity test and the electric energy management of user side in the network system, as seen from Figure 1, native system comprises main control module, data acquisition module, time module, meter-reading module, execution module, display module, communication module, the Keyboard Control module, power module, described data acquisition module, time module, meter-reading module, execution module, display module, communication module, the Keyboard Control module is connected with main control module and power module simultaneously, described meter-reading module is connected with the pulse output interface of each ammeter in the electrical network, forms annexation shown in Figure 2; Specifically be that meter-reading module 1 provides N that 24V is had source contact, link to each other one by one that bring device inside into for avoiding switching value that the scene is disturbed, the pulse that collects (switching value) is imported main control module 5 into after photoelectricity is isolated, specifically as shown in Figure 3 with the pulse output of ammeter.Main control module 5 is delivered to display module 2 with after the data processing with statistics; The user inquires about and relative parameters setting by Keyboard Control module 7; Utilize communication module 3 can realize with communication modes (MODBUS stipulations) to composite terminal carry out parameter tuning, to the time, the control of data read and execution module; Export according to the command execution switching value by execution module 4; Power module 9 is by optional 220V of actual conditions or 110V input (AC/DC universal), and its output is connected with each module.Described main control module 5 is connected and composed by MPU chip, ferroelectric memory, house dog and peripheral components, wherein, the MPU chip is the C8051F120 of Cygnal company, this chip is fully-integrated mixed signal SOC (system on a chip) type MCU chip, all simulations all can be by user's firmware enable/disable and configuration with digital peripherals, the FALSH storer also has the reprogramming ability in system, can be used for non-volatile data storage, and allows on-the-spot firmware update; The high speed CIP-51 kernel of 100MIPS has guaranteed the speed and the real-time requirement of computing.Storer is then selected FM24C256 serial Nonvolatile ferroelectric memory (32KB, the read/write life-span 10,000,000,000 times, write data does not have time-delay, power down data maintenance 10 years, the highest 1MHz of bus speed) for use; Described data acquisition module 8 as shown in Figure 5, constitute by built-in A phase, B phase, C phase current mutual inductor, zero sequence current mutual inductor, A phase, B phase, C phase voltage mutual inductor, electric energy measure chip, amplifying circuit etc., each current transformer, voltage transformer (VT) are connected to electric energy measure chip by amplifying return circuit, the signal of voltage transformer (VT), current transformer collection enters electric energy measure chip through amplifying return circuit, and being connected with the input end of main control module 5 in the full-duplex serial bus mode by Serial Peripheral Interface (SPI) (SPI) at the output terminal of electric energy measure chip communicates; Electric energy measure chip is selected the high-precision ATT7022B (circuit such as digital signal processing of integrated six road second order Sigma-Delta ADC, reference voltage circuit and all power, energy, effective value, power factor and frequency measurement for use, the 5V power supply), this chip is in input dynamic duty scope (1000: 1), and the nonlinear measurement error is less than 0.1%.
The principle of work of native system is: the work of all modules is controlled in 5 pairs of terminals of main control module, coordinate, the data that data acquisition module 8 and meter-reading module 1 provide are carried out computing, logic analysis and statistics, device provides 1 year 8 season, the compound timesharing setting of 12 periods of every day (be accurate to minute), utilize the pulse data output and the native system powerful operation capacity of other normal pulsed formula ammeters (ammeter quantity 〉=24) in the system, by accurate current time of providing of module extraction time, data to input are handled at times and are carried out day, month, the accumulative total and statistics of the total electric degree and the amount of money are specifically consulted Fig. 4.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included in the utility model and be included within the protection domain of the present utility model.

Claims (4)

1, a kind of load control and multi-channel time-shared charge electric energy multiple control system, it is characterized in that: comprise main control module, data acquisition module, time module, meter-reading module, execution module, display module, communication module, Keyboard Control module, power module, described data acquisition module, time module, meter-reading module, execution module, display module, communication module, Keyboard Control module are connected with main control module and power module simultaneously, and described meter-reading module is connected with the pulse output interface of each ammeter in the electrical network.
2, load control according to claim 1 and multi-channel time-shared charge electric energy multiple control system, it is characterized in that: described main control module comprises single-chip microcomputer, ferroelectric memory, house dog and peripheral circuit, and described ferroelectric memory, house dog and peripheral circuit are connected with single-chip microcomputer; Described single-chip microcomputer comprises controller kernel, data-carrier store, program storage, serial ports, A/D, D/A conversion chip, and described serial ports is connected with communication module.
3, load control according to claim 1 and multi-channel time-shared charge electric energy multiple control system, it is characterized in that: described data acquisition module comprises current transformer, voltage transformer (VT), electric energy measure chip, amplifying return circuit and peripheral loop, described current transformer, voltage transformer (VT) are connected to electric energy measure chip by amplifying return circuit, and electric energy measure chip is by the Serial Peripheral Interface (SPI) communication that is connected with main control module.
4, load control according to claim 1 and multi-channel time-shared charge electric energy multiple control system, it is characterized in that: described meter-reading module is made up of towards acquisition circuit direct current 24 deep-sited pulses of N road.
CN 200620155301 2006-12-26 2006-12-26 Composite electric-energy managing system of load control and multiplexing time-sharing charging Expired - Lifetime CN200996971Y (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102340518A (en) * 2010-07-19 2012-02-01 上海资和通信科技有限公司 Multifunctional remote management terminal
CN102708662A (en) * 2012-05-14 2012-10-03 广东中钰科技有限公司 Smart collecting terminal for plurality of communication modes
CN102760352A (en) * 2012-07-06 2012-10-31 物联微电子(常熟)有限公司 Single-rate meter time-sharing charging system and method
CN104569528A (en) * 2014-12-25 2015-04-29 国网重庆市电力公司永川供电分公司 Electric energy charging method considering harmonic wave electric energy loss of load
CN105043564A (en) * 2015-05-26 2015-11-11 安徽中科都菱商用电器股份有限公司 Temperature recorder facilitating user interaction
CN113406375A (en) * 2021-07-08 2021-09-17 宁夏隆基宁光仪表股份有限公司 Intelligent ammeter system sharing storage and display device and sharing method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102340518A (en) * 2010-07-19 2012-02-01 上海资和通信科技有限公司 Multifunctional remote management terminal
CN102708662A (en) * 2012-05-14 2012-10-03 广东中钰科技有限公司 Smart collecting terminal for plurality of communication modes
CN102760352A (en) * 2012-07-06 2012-10-31 物联微电子(常熟)有限公司 Single-rate meter time-sharing charging system and method
CN102760352B (en) * 2012-07-06 2015-07-01 物联微电子(常熟)有限公司 Single-rate meter time-sharing charging system and method
CN104569528A (en) * 2014-12-25 2015-04-29 国网重庆市电力公司永川供电分公司 Electric energy charging method considering harmonic wave electric energy loss of load
CN104569528B (en) * 2014-12-25 2017-03-29 国网重庆市电力公司永川供电分公司 A kind of electric energy tariffing method of the harmonic electric energy loss of meter and load
CN105043564A (en) * 2015-05-26 2015-11-11 安徽中科都菱商用电器股份有限公司 Temperature recorder facilitating user interaction
CN113406375A (en) * 2021-07-08 2021-09-17 宁夏隆基宁光仪表股份有限公司 Intelligent ammeter system sharing storage and display device and sharing method thereof

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