CN104267373A - Gateway meter assessment device - Google Patents
Gateway meter assessment device Download PDFInfo
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- CN104267373A CN104267373A CN201410555723.8A CN201410555723A CN104267373A CN 104267373 A CN104267373 A CN 104267373A CN 201410555723 A CN201410555723 A CN 201410555723A CN 104267373 A CN104267373 A CN 104267373A
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Abstract
The invention discloses a gateway meter assessment device. The gateway meter assessment device comprises an analog acquisition module, a gateway meter communication module and a CPU; power network electrical parameters are collected by the analog acquisition module, the gateway meter communication module obtains internal collection power network electrical parameters of a gateway meter, the CPU conducts data statistics and contrastive analysis on the power network electrical parameters collected by the analog acquisition module and the internal collection power network electrical parameters of the gateway meter, online testing and state assessment are carried out on the gateway meter according to statistical data and contrastive analysis results, and an alarm is given for abnormal conditions. The gateway meter assessment device is low in cost, convenient to install and simple in operation maintenance; data such as the voltage, the current, the power and the electric quantity of the device can be detected and metered on line; real-time online error detection and alarming, voltage secondary voltage drop testing and current and voltage secondary load testing can be carried out on the gateway meter, and an existing manual patrolling mode is substituted.
Description
Technical field
The present invention relates to a kind of measuring apparatus supervising device, particularly a kind of Source of Gateway Meter apparatus for evaluating.
Background technology
Source of Gateway Meter is between country, between regional power grid, between provincial power network, between area power grid, electricity power enterprise surfs the Net, electrical energy metering equipment is used in the chargings such as mega-corporation user or examination, in order to ensure the accuracy of measuring, equipment needs regularly to carry out detection check, the way generally adopted now is that artificial cycle carries specialized detection and patrols and examines to scene, manpower and the expense of input are large, testing amount is large, workflow very complicated, cycle is long, the running status of equipment cannot be grasped in real time, also effective monitor and managment cannot be carried out to numerous Source of Gateway Meter, the equipment alarm information that breaks down is difficult to be fed back in time.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency existing in prior art, a kind of Source of Gateway Meter apparatus for evaluating is provided, this device is based on the CPU technology of a new generation, adopt large scale integrated circuit, Applied Digital sampling processing technology and SMT technique, and be furnished with the network management system of complete advanced person, it is low that system has cost, easy for installation, the features such as operation maintenance is simple, the voltage of energy on-line checkingi measuring apparatus, electric current, power, the data such as electricity, achieve the real-time online error-detecting to Source of Gateway Meter and alarm, voltage secondary voltage drop is tested, current/voltage secondary load is tested, instead of existing artificial inspection pattern.
In order to realize foregoing invention object, the invention provides following technical scheme:
Source of Gateway Meter apparatus for evaluating, comprise analogue collection module, Source of Gateway Meter communication module and CPU, described analogue collection module gathers power network electrical parameter, the inside that described Source of Gateway Meter communication module obtains Source of Gateway Meter gathers power network electrical parameter, the inside of the power network electrical parameter that described CPU gathers described analogue collection module and described Source of Gateway Meter gathers power network electrical parameter and carries out data statistics and comparative analysis, according to statistics and comparative analysis result, on-line checkingi and state estimation are carried out to described Source of Gateway Meter, alarm is provided for abnormal conditions.
Preferably, also comprise main website communication module, the statistics of described CPU and comparative analysis result are uploaded to main website server by described main website communication module.
Preferably, also comprise PT/CT communication module, described PT/CT communication module obtains the PT voltage data that power network PT harvester gathers, and described CPU monitors secondary circuit voltage drop according to the Source of Gateway Meter side voltage data of described PT voltage data and described analogue collection module collection.
Preferably, described PT/CT communication module obtains the electric current and voltage data that power network PT harvester and CT harvester gather, and described CPU monitors the PT load of secondary circuit, CT load according to these electric current and voltage data gathered.
Preferably, also comprise clock module, described clock module comprises real-time clock module and GPS module.
Preferably, also comprise pulse collection module, switching value acquisition module, described pulse collection module is used for the measurement of electrical energy pulse, and described switching value acquisition module is used for sampling circuit switching signal.
Preferably, also comprise field maintemance module and LED display module, described field maintemance module realizes PC field maintemance operation by serial ports, and described LED display module completes presence states instruction by the on-the-spot pilot lamp of LED.
Preferably, also comprise local memory module, for the preservation of device configuration parameter and sampled data, historical data.
Preferably, the communication of described main website communication module adopts wired ethernet or wireless network.
Preferably, the communication of described Source of Gateway Meter communication module and described Source of Gateway Meter adopts RS485 bus, and described PT/CT communication module and PT harvester adopt Zigbee wireless telecommunications with communicating of CT harvester.
compared with prior art, beneficial effect of the present invention:
1. substitute existing artificial inspection pattern, cost of labor is low, easy for installation, operation maintenance is simple, can the data such as voltage, electric current, power, electricity of on-line checkingi measuring apparatus, realize the real-time online error-detecting of Source of Gateway Meter and alarm, the test of voltage secondary voltage drop, the test of current/voltage secondary load.
2. support to organize monitoring function more, a Source of Gateway Meter apparatus for evaluating can simultaneously to 12 measurement loop monitoring, the functions such as the storage of abundant circuit monitoring, data, communication, man-machine interface, telemanagement are provided, by the main website Server remote true-time operation Source of Gateway Meter apparatus for evaluating of power network measurement centre, both can realize the Data Comparison in real-time sampling moment, also can do the analysis of statistical value in one section of event.
3. Source of Gateway Meter side adopts wireless communication mode to gather PT, CT side electric current and voltage data, and eliminate traditional long lead metering system, equipment is easy for installation.
4. device adds GPS module to carry out time synchronized at secondary circuit voltage drop part of detecting, thus ensures the phase error accurately measuring secondary circuit voltage drop, more accurate than traditional mode that generally only can detect secondary circuit voltage drop amplitude error.
Accompanying drawing explanation
Fig. 1 is Source of Gateway Meter apparatus for evaluating application schematic diagram of the present invention
Fig. 2 is Source of Gateway Meter apparatus for evaluating structural representation of the present invention
Fig. 3 is the chip hardware interface configuration figure of Source of Gateway Meter apparatus for evaluating of the present invention.
Embodiment
Below in conjunction with test example and embodiment, the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on content of the present invention all belong to scope of the present invention.
As shown in Figure 1, Source of Gateway Meter apparatus for evaluating is installed in the metering cabinet at Source of Gateway Meter place, substation, Source of Gateway Meter is all connected with power network circuit with Source of Gateway Meter apparatus for evaluating, and the inside of Source of Gateway Meter collection electric quantity data is concentrated and obtained and be uploaded to main website server by data concentrator; Source of Gateway Meter apparatus for evaluating possesses high precision monitor circuit, the information about power data of Real-time Collection power network critical point node, support that the inside image data that various stipulations can read critical point ammeter carries out data statistics and comparative analysis simultaneously, on-line checkingi and state estimation are carried out to described Source of Gateway Meter, alarm is provided for abnormal conditions system, statistics and comparative analysis result is uploaded to main website server simultaneously; The main website server of power network measurement centre gathers the statistics of electric quantity data and described Source of Gateway Meter apparatus for evaluating according to the Source of Gateway Meter inside obtained and comparative analysis result carries out remote monitoring and state estimation to Source of Gateway Meter.Source of Gateway Meter apparatus for evaluating also can communicate to connect to monitor the relevant parameters of power network secondary circuit with the PT harvester in power network PT cabinet, CT cabinet and CT harvester, described PT harvester and CT harvester, for obtaining power network PT/CT data, can adopt known equipment in the industry.
As shown in Figure 2, Source of Gateway Meter apparatus for evaluating comprises analogue collection module, Source of Gateway Meter communication module, pulsed quantity acquisition module, PT/CT communication module, switching value acquisition module, main website communication module, clock module, LED display module, field maintemance module, local memory module and CPU(not shown), described analogue collection module gathers power network electrical parameter, the inside that described Source of Gateway Meter communication module obtains Source of Gateway Meter gathers power network electrical parameter, the inside of the power network electrical parameter that described CPU gathers described analogue collection module and described Source of Gateway Meter gathers power network electrical parameter and carries out data statistics and comparative analysis, according to statistics and comparative analysis result, on-line checkingi and state estimation are carried out to described Source of Gateway Meter, alarm is provided for abnormal conditions.
As shown in Figure 3, Source of Gateway Meter apparatus for evaluating adopts the microcontroller LPC1788 based on ARM core Cortex-M3, the CPU of Cortex-M3 has 3 level production lines and Harvard structure, band independently local instruction bus and data bus, and for the lower slightly Article 3 bus of the performance of peripheral hardware, the configuration of microcontroller hardware interface resource as shown in Figure 3.
Monitoring function is organized in one table apparatus support more, and every table apparatus supports at most 12 measurement loop monitoring.Device inner every road pilot signal adopts three current transformer of linear characteristic and voltage dividers of three precision resistances being with compensation.Device adopts 32 Cotex-M3 kernels at a high speed, and performance reaches 70Mips, provides the functions such as the storage of abundant circuit monitoring, data, communication, man-machine interface, telemanagement.Device possesses massive store, supports international IEC standard and the relevant ammeter communication protocol of state's net electric power: DL/T614, DL/T645 stipulations.
Analogue collection module is responsible for the ac analog collection in 12 loops, wherein every loop 3 voltage 3 electric current, and the mode of connection is 3P4L or 3P3L.Data processing obtains the parameters of electric power such as each loop voltage, electric current, active power, reactive power, applied power, active energy, reactive energy, frequency, phase angle.
Source of Gateway Meter communication module is responsible for the data acquisition of 12 pieces of Source of Gateway Meter, obtain the parameters of electric power such as voltage, electric current, active power, reactive power, applied power, active energy, reactive energy, frequency, phase angle of every block Source of Gateway Meter, obtain data by RS485 bus communication.
Pulsed quantity acquisition module, switching value acquisition module realize 12 road pulsed quantity or switch acquisitions, are mainly used in the measurement of electrical energy pulse, or the sampling of line switching signal.
PT/CT communication module realizes carrying out wireless networking with 12 CT equipment and 4 PT equipment, and realize Wireless Data Transmission, communication wireless telecommunications adopt Zigbee to realize.
PT three-phase voltage is done high precision collecting by PT harvester in power network PT cabinet on the spot, and by data back to Source of Gateway Meter apparatus for evaluating, the voltage of the collection point of Source of Gateway Meter side can also be done accurate measurement by Source of Gateway Meter apparatus for evaluating, and background system can monitor the situation of secondary circuit voltage drop according to the data between 2 measurement points.Test PT secondary circuit voltage drop, needs the voltage fetching two ends, road to contrast, obtains the number percent that pressure drop accounts for signal.Traditional way is, with long lead, PT side signal is guided to instrument side, by the amplitude error between pressure reducing instrument test PT side and two, instrument side signal and phase error.The present invention, in order to the convenience of installing, employs wireless mode.Measure the effective value of voltage in PT side by PT harvester, the ammeter side voltage effective value collected with it by the Source of Gateway Meter apparatus for evaluating being wirelessly transmitted to ammeter side is contrasted, and draws the amplitude error of PT secondary circuit voltage drop.Further, the present invention also carries out time synchronized by the GPS module of Source of Gateway Meter apparatus for evaluating to PT harvester and Source of Gateway Meter apparatus for evaluating, the phase measurement enabling signal simultaneously producing PT harvester and Source of Gateway Meter apparatus for evaluating realizes the synchro measure of phase place, to draw the phase error of PT secondary circuit voltage drop.Because phase test needs to be accurate to point, corresponding time delay is at about 1uS, therefore native system adds GPS module to carry out time synchronized (time service precision 1uS), obtain the synchronous pps pulse per second signal of GPS as phase measurement enabling signal by GPS module, thus ensure the phase error measuring secondary circuit voltage drop.
The CT harvester be installed in power network CT cabinet is connected with Source of Gateway Meter apparatus for evaluating, the voltage of secondary circuit PT side and the current signal of this circuit is recorded by PT harvester, the electric current of CT side and the voltage signal of this circuit of secondary circuit is recorded by CT harvester, Source of Gateway Meter apparatus for evaluating obtains above-mentioned data obtain secondary circuit PT load, CT load by process, thus realizes the PT load of secondary circuit, the on-line monitoring of CT load.
Main website communication module realizes carrying out data interaction with main website, and main website carries out optimum configurations, status monitoring, sampled data and assessment raw data by this module to equipment and obtains.Communication modes is power communication wired ethernet mode or operator 2G, 3G, 4G wireless network.
Clock module realizes the operation of equipment clock time, the reservation of power down time, comprises real-time clock module and GPS module.The built-in 32.768KHz crystal unit of real-time clock module, has the functions such as moment, calendar, various measuring ability, interruption.GPS module is a complete satnav receiving equipment, and possess comprehensive function, positioning time, cold start-up was less than 27s, time service precision 1us, and output information comprises UTC time, longitude and latitude, pulse per second (PPS).
Field maintemance module and LED display module primary responsibility complete presence states instruction by the on-the-spot pilot lamp of LED, realize PC field maintemance operation, comprise parameters, read data etc. by serial ports.
Local memory module is mainly used in the preservation of device configuration parameter, the preservation of sampling correcting data, the preservation of history freezing data, and event occurs to preserve.
The problems such as Source of Gateway Meter apparatus for evaluating of the present invention is patrolled and examined for gate energy meter, detection researched and developed, thus solve manual inspection, testing amount greatly, the problems such as workflow is loaded down with trivial details, complicated.Device is based on the CPU technology of a new generation, adopt large scale integrated circuit, Applied Digital sampling processing technology and SMT technique, and be furnished with the network management system of complete advanced person, the gate energy meter supervising device with the complete set of modern advanced level manufactured designed by user's request.
Claims (10)
1. Source of Gateway Meter apparatus for evaluating, it is characterized in that, comprise analogue collection module, Source of Gateway Meter communication module and CPU, described analogue collection module gathers power network electrical parameter, the inside that described Source of Gateway Meter communication module obtains Source of Gateway Meter gathers power network electrical parameter, the inside of the power network electrical parameter that described CPU gathers described analogue collection module and described Source of Gateway Meter gathers power network electrical parameter and carries out data statistics and comparative analysis, according to statistics and comparative analysis result, on-line checkingi and state estimation are carried out to described Source of Gateway Meter, alarm is provided for abnormal conditions.
2. Source of Gateway Meter apparatus for evaluating according to claim 1, is characterized in that, also comprises main website communication module, and the statistics of described CPU and comparative analysis result are uploaded to main website server by described main website communication module.
3. Source of Gateway Meter apparatus for evaluating according to claim 1, it is characterized in that, also comprise PT/CT communication module, described PT/CT communication module obtains the PT voltage data that power network PT harvester gathers, and described CPU monitors secondary circuit voltage drop according to the Source of Gateway Meter side voltage data of described PT voltage data and described analogue collection module collection.
4. Source of Gateway Meter apparatus for evaluating according to claim 3, it is characterized in that, described PT/CT communication module obtains the electric current and voltage data that power network PT harvester and CT harvester gather, and described CPU monitors the PT load of secondary circuit, CT load according to these electric current and voltage data gathered.
5. Source of Gateway Meter apparatus for evaluating according to claim 4, is characterized in that, also comprise clock module, and described clock module comprises real-time clock module and GPS module.
6. Source of Gateway Meter apparatus for evaluating according to claim 1, is characterized in that, also comprises pulse collection module, switching value acquisition module, and described pulse collection module is used for the measurement of electrical energy pulse, and described switching value acquisition module is used for sampling circuit switching signal.
7. Source of Gateway Meter apparatus for evaluating according to claim 1, it is characterized in that, also comprise field maintemance module and LED display module, described field maintemance module realizes PC field maintemance operation by serial ports, and described LED display module completes presence states instruction by the on-the-spot pilot lamp of LED.
8. Source of Gateway Meter apparatus for evaluating according to claim 1, is characterized in that, also comprises local memory module, for the preservation of device configuration parameter and sampled data, historical data.
9. Source of Gateway Meter apparatus for evaluating according to claim 2, is characterized in that, the communication of described main website communication module adopts wired ethernet or wireless network.
10. Source of Gateway Meter apparatus for evaluating according to claim 3, it is characterized in that, the communication of described Source of Gateway Meter communication module and described Source of Gateway Meter adopts RS485 bus, and described PT/CT communication module and PT harvester adopt Zigbee wireless telecommunications with communicating of CT harvester.
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| CN104880690A (en) * | 2015-06-15 | 2015-09-02 | 国网上海市电力公司 | Method for evaluating operation of electric energy meter |
| CN104880691A (en) * | 2015-06-15 | 2015-09-02 | 国网上海市电力公司 | Method for evaluating operation state of gateway electrical energy metering device |
| CN104898084A (en) * | 2015-06-19 | 2015-09-09 | 国网重庆市电力公司电力科学研究院 | Electric energy metering device operation state monitoring method |
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| CN104898084A (en) * | 2015-06-19 | 2015-09-09 | 国网重庆市电力公司电力科学研究院 | Electric energy metering device operation state monitoring method |
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| CN105301552A (en) * | 2015-11-11 | 2016-02-03 | 千江（上海）信息科技有限公司 | Electric energy metering device online verification system |
| CN105699758A (en) * | 2016-03-02 | 2016-06-22 | 中国人民解放军91663部队 | Power factor meter with metering interface and method thereof |
| CN105699758B (en) * | 2016-03-02 | 2018-10-30 | 中国人民解放军91663部队 | Power-factor meter with metering interface and its method |
| CN105929283A (en) * | 2016-06-12 | 2016-09-07 | 华电电力科学研究院 | Electric energy balance test system and electric energy balance test method for power utilization enterprise |
| CN106093838B (en) * | 2016-07-25 | 2019-03-08 | 中国南方电网有限责任公司电网技术研究中心 | Gate energy meter remote online method of calibration and system |
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| CN107783073A (en) * | 2017-09-27 | 2018-03-09 | 国网冀北电力有限公司承德供电公司 | Electric Energy Tariff Point Metering Device operation management system, data acquisition and alarm method |
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Address after: 610041, 30, 1, 3003, 138 Tianfu two street, Chengdu hi tech Zone, Sichuan, China Applicant after: Chengdu Si Han Science and Technology Co., Ltd. Address before: West high tech Zone Fucheng Road in Chengdu city of Sichuan province 610041 No. 399 Tianfu New Valley No. 5 Building 8 floor Applicant before: Chengdu Sihan Technology Co., Ltd. |
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