CN203178364U - Electric energy metering device with power quality monitoring - Google Patents
Electric energy metering device with power quality monitoring Download PDFInfo
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- CN203178364U CN203178364U CN 201320149539 CN201320149539U CN203178364U CN 203178364 U CN203178364 U CN 203178364U CN 201320149539 CN201320149539 CN 201320149539 CN 201320149539 U CN201320149539 U CN 201320149539U CN 203178364 U CN203178364 U CN 203178364U
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Abstract
The utility model relates to an electric energy metering device with power quality monitoring, which comprises an electric energy integrated data collection terminal, a transmission subsystem and a background management subsystem, wherein the electric energy integrated data collection terminal is connected with the background management subsystem through the transmission subsystem, and the electric energy integrated data collection terminal is installed on an outgoing line switch cabinet of a distribution substation. Compared with the prior art, the electric energy metering device has the advantages of multiple functions, high safety, high reliability, good economy and the like.
Description
Technical field
The utility model relates to a kind of electric power meter, especially relates to a kind of electric power meter of charged energy quality monitoring.
Background technology
The quality of power supply is the high-lighting problem that China Utilities Electric Co. and government all pay special attention to, and along with the development of China's all trades and professions, user's irregular use makes China's load configuration little by little change, and meanwhile, has also seriously influenced the quality of power supply.
Up to now, that equipment for monitoring power quality can be divided into is portable, hand-held, several forms such as centralized, portable electric energy quality monitoring device main LEM company of domestic and international famous producer (representative device PQPT1000/1001), Union Bank of Switzerland electric power UNIPOWER company (representative device PM30), Shanghai Tsson Power Quality Co., Ltd. (representative device PQ116) etc.These can be used for interference source equipment together and get involved the special project monitoring of electrical network front and back, filter debugging and functional assessment test, scientific research test and on-the-spot fixed time test.Test channel is many, and dynamic range is big, and the multiple mode of setting out can the whole indexs of the record analysis quality of power supply, and the information processing function is strong, and good software platform is arranged.But be not the monitoring of very continuity remote monitoring and multiple spot, price is because than higher.
There are U.S. FLUKE (representative instrument F43, F43B), Switzerland LEM company (representative device AN2060 and AN3060) in the domestic and international famous producer of hand-held equipment for monitoring power quality, Italy HT company (representative device HT9030, the products such as PQ102 of Shanghai Baosteel quality of power supply company limited.This quasi-instrument is fit to on-the-spot spot check regularly and the debugging of non-linear power equipment, the measurement parameter scope is more preceding portable little, one one at unidirectional voltage, electric current input monitor, can test analysis voltage, the current first harmonics effective value, real effective, the 2-50 subharmonic, active power, reactive power and power factor etc., and have the waveform storage.Playback, communication interface and communication software, price are also than higher.
For important electric power facilities such as transformer stations, need have large-scale, the equipment for monitoring power quality that stability is high keeps long-time monitoring and record to the electrical network quality of power supply, so centralized equipment for monitoring power quality occurred, traditional equipment for monitoring power quality adopts industrial computer to be equipped with data acquisition and analysis that data collecting card is realized the quality of power supply in design mostly, because the signal of handling all concentrates in together, it is processed that these signals enter computing machine simultaneously, and this device is commonly referred to as centralized equipment for monitoring power quality.
Domestic and international most of manufacturer production all is centralized equipment for monitoring power quality at present, and the general long-time running of this device is in rugged environment, and is therefore very high to the stability requirement of device; Voltage deviation, frequency departure, mains by harmonics, imbalance of three-phase voltage degree and the user that device can the continuous monitoring common point injects mains by harmonics electric current and negative-sequence current simultaneously, have power quality index overload alarm, data recording, quality of power supply fault analysis forecast, internet function etc.
But, the shortcoming of this device is also fairly obvious, though the computing velocity of computing machine is that embedded real time system hardware such as present DSP are unrivaled, but the coordination that the high speed acquisition of data collecting card data and computer real-time are handled is to influence the key issue that real system makes up always, the real-time performance of system is difficult to be guaranteed, and need a computer field analysis tool for each monitoring point, cause the cost of whole system to uprise.
More than three kinds of modes, summing up has following deficiency:
1, owing to adopt various computing machines as the field monitoring analysis tool, cause equipment cost higher;
2, equipment configuration flexibility, versatility are poor, often can only be used for specific operating environment;
3, real-time is poor, and the time frequency analysis means fall behind, and do not possess tracking and capture ability to ringing and transient state harmonic wave;
4, telecommunication capabilities is limited, is difficult for realizing remote monitoring, data sharing and long-term assessment and prediction, and intelligent and networked level is not high yet.
5, limited to the identification capability of the classification disturbed and fault, do not possess the intellectual analysis function, can not offer the information that the user is directly used in decision-making;
6, field apparatus does not possess real-time analytical capability, and a large amount of image data all will send special analysis tool to and go to handle, and cause the storage capacity requirement of field apparatus very big.
The deficiency of equipment itself not only influences field monitoring, also influence the function of total system, real-time as field apparatus is bad, and to recognition capability difference of ringing etc., the system that all can influence is to quick-reaction capability (QRC), electricity quality evaluation ability and the decision analysis ability of problem.
In addition, existing electric energy metered system function only has the simple function of electric energy metrical, does not possess functions such as data storage, power quality analysis, failure wave-recording.And do not install electric power meter at each leading-out terminal of distribution substation, can't monitor, record the electric energy situation of each road leading-out terminal.Electric energy metrical and power quality analysis device are two different terminal systems separately, still do not have the system and device that unites two into one at present.
The utility model content
The purpose of this utility model be exactly provide in order to overcome the defective that above-mentioned prior art exists a kind of multi-functional, safe, reliability is high, the charged electric power meter that can quality monitoring of good economy performance.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of electric power meter of charged energy quality monitoring, it is characterized in that, comprise electric energy integrated data acquisition terminal, transmission subsystem and back-stage management subsystem, described electric energy integrated data acquisition terminal is connected with the back-stage management subsystem by transmission subsystem, and described electric energy integrated data acquisition terminal is installed in transformer and distribution power station outlet switch cubicle;
Described electric energy integrated data acquisition terminal is gathered each bus section, busbar section voltage of transformer and distribution power station and each outgoing electric current in real time, obtain power quality data and electric energy data, and give the back-stage management subsystem with power quality data and electric energy data by the transmission subsystem real-time Transmission.
Described electric energy integrated data acquisition terminal comprises mutual inductor, filtering circuit, AD converter, electric energy computation chip, CPU, storer, alarm and datel circuit, described mutual inductor is installed on the distribution substation outlet switch cubicle, and be connected with filtering circuit, described filtering circuit, AD converter, electric energy computation chip, CPU connect successively, and described CPU is connected with storer, alarm and datel circuit respectively.
Described mutual inductor comprises the voltage transformer (VT) summation current transformer, and described voltage transformer (VT) is installed on each bus section, busbar section of distribution substation, and described current transformer is installed on each outgoing of distribution substation.
Electric current after described electric energy computation chip will calculate, voltage, power, electric energy data are transferred to CPU, simultaneously Wave data are exported to CPU, and CPU obtains accumulative total electric energy and each rate section accumulative total electric energy according to period and rate, obtains harmonic component simultaneously.
Described filtering circuit adopts the two-stage filtering circuit.
Described transmission subsystem comprises input bus, processor, memory module and remote communication module, described processor is connected with input bus, memory module and remote communication module respectively, and described input bus is connected with the datel circuit of electric energy integrated data acquisition terminal.
Described input bus is RS-232, RS-485 or industry ethernet.
Be provided with DEU data encryption unit and data coding unit in the described processor.
Described back-stage management subsystem comprises data access server, database server, electric energy quality monitoring server, electric flux monitor server, web server and the SMS notification server that connects by LAN (Local Area Network) between any two, and described data access server is connected with the remote communication module of transmission subsystem by communication network.
Be provided with data decryption unit and data decode unit in the described data access server.
Compared with prior art, the utlity model has following advantage:
1, multi-functional, realized electrical energy metering function, Power Quality Detection function and other Automation of Electric Systems function;
2, improve the security of electric system, grasped line loss and load condition that each road occurs in real time, in time to take counter-measure.
3, reliability height is by reporting to the police and the remote alarms two-stage improves the reliability of whole device this locality.
4, good economy performance, the utility model is conducive to the maintenance and management of Utilities Electric Co.'s electric power system, guaranteed good social security, the utility model can be expanded functions such as realizing harmonic measure, power quality analysis and fault ripple simultaneously, therefore enforcement economic benefit of the present utility model and obvious social benefit are with a wide range of applications and wider promotional value.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model electric energy integrated data acquisition terminal;
Fig. 3 is the structural representation of the utility model transmission subsystem;
Fig. 4 is the structural representation of the utility model back-stage management subsystem.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of electric power meter of charged energy quality monitoring, comprise electric energy integrated data acquisition terminal 1, transmission subsystem 2 and back-stage management subsystem 3, described electric energy integrated data acquisition terminal 1 is connected with back-stage management subsystem 3 by transmission subsystem 2, and described electric energy integrated data acquisition terminal 1 is installed in transformer and distribution power station outlet switch cubicle;
Described electric energy integrated data acquisition terminal 1 is gathered each bus section, busbar section voltage of transformer and distribution power station and each outgoing electric current in real time, obtain power quality data and electric energy data, and give back-stage management subsystem 3 with power quality data and electric energy data by transmission subsystem 2 real-time Transmission.
As shown in Figure 2, described electric energy integrated data acquisition terminal 1 comprises mutual inductor, filtering circuit 13, AD converter 14, electric energy computation chip 15, CPU16, storer 17, alarm 18 and datel circuit 19, described mutual inductor is installed on the distribution substation outlet switch cubicle, and be connected with filtering circuit 13, described filtering circuit 13, AD converter 14, electric energy computation chip 15, CPU16 connect successively, and described CPU16 is connected with storer 17, alarm 18 and datel circuit 19 respectively.
Described mutual inductor comprises voltage transformer (VT) 11 summation current transformers 12, and described voltage transformer (VT) 11 is installed on each bus section, busbar section of distribution substation, and described current transformer 12 is installed on each outgoing of distribution substation.
Electric current, voltage, power, electric energy data after described electric energy computation chip 15 will calculate are transferred to CPU, simultaneously Wave data are exported to CPU, and CPU obtains accumulative total electric energy and each rate section accumulative total electric energy according to period and rate, obtains harmonic component simultaneously.Described filtering circuit 13 adopts the two-stage filtering circuit.
As shown in Figure 3, described transmission subsystem 2 comprises input bus 21, processor 22, memory module 23 and remote communication module 24, described processor 22 is connected with input bus 21, memory module 23 and remote communication module 24 respectively, and described input bus 21 is connected with the datel circuit 19 of electric energy integrated data acquisition terminal 1.Described input bus 21 is RS-232, RS-485 or industry ethernet.Be provided with DEU data encryption unit and data coding unit in the described processor.
As shown in Figure 4, described back-stage management subsystem 3 comprises data access server 31, database server 32, electric energy quality monitoring server 33, electric flux monitor server 34, web server 35 and the SMS notification server 36 that connects by LAN (Local Area Network) between any two, and described data access server 31 is connected with the remote communication module of transmission subsystem by communication network.Be provided with data decryption unit and data decode unit in the described data access server.
Claims (9)
1. charged electric power meter that can quality monitoring, it is characterized in that, comprise electric energy integrated data acquisition terminal, transmission subsystem and back-stage management subsystem, described electric energy integrated data acquisition terminal is connected with the back-stage management subsystem by transmission subsystem, and described electric energy integrated data acquisition terminal is installed in transformer and distribution power station outlet switch cubicle.
2. a kind of charged electric power meter that can quality monitoring according to claim 1, it is characterized in that, described electric energy integrated data acquisition terminal comprises mutual inductor, filtering circuit, AD converter, electric energy computation chip, CPU, storer, alarm and datel circuit, described mutual inductor is installed on the distribution substation outlet switch cubicle, and be connected with filtering circuit, described filtering circuit, AD converter, electric energy computation chip, CPU connect successively, and described CPU is connected with storer, alarm and datel circuit respectively.
3. a kind of charged electric power meter that can quality monitoring according to claim 2, it is characterized in that, described mutual inductor comprises the voltage transformer (VT) summation current transformer, described voltage transformer (VT) is installed on each bus section, busbar section of distribution substation, and described current transformer is installed on each outgoing of distribution substation.
4. the electric power meter of a kind of charged energy quality monitoring according to claim 2 is characterized in that, described filtering circuit adopts the two-stage filtering circuit.
5. a kind of charged electric power meter that can quality monitoring according to claim 2, it is characterized in that, described transmission subsystem comprises input bus, processor, memory module and remote communication module, described processor is connected with input bus, memory module and remote communication module respectively, and described input bus is connected with the datel circuit of electric energy integrated data acquisition terminal.
6. the electric power meter of a kind of charged energy quality monitoring according to claim 5 is characterized in that described input bus is RS-232, RS-485 or industry ethernet.
7. the electric power meter of a kind of charged energy quality monitoring according to claim 5 is characterized in that, is provided with DEU data encryption unit and data coding unit in the described processor.
8. a kind of charged electric power meter that can quality monitoring according to claim 5, it is characterized in that, described back-stage management subsystem comprises data access server, database server, electric energy quality monitoring server, electric flux monitor server, web server and the SMS notification server that connects by LAN (Local Area Network) between any two, and described data access server is connected with the remote communication module of transmission subsystem by communication network.
9. the electric power meter of a kind of charged energy quality monitoring according to claim 8 is characterized in that, is provided with data decryption unit and data decode unit in the described data access server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149539 CN203178364U (en) | 2013-03-28 | 2013-03-28 | Electric energy metering device with power quality monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149539 CN203178364U (en) | 2013-03-28 | 2013-03-28 | Electric energy metering device with power quality monitoring |
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| Publication Number | Publication Date |
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| CN203178364U true CN203178364U (en) | 2013-09-04 |
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| CN 201320149539 Expired - Lifetime CN203178364U (en) | 2013-03-28 | 2013-03-28 | Electric energy metering device with power quality monitoring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675519A (en) * | 2013-10-23 | 2014-03-26 | 国家电网公司 | Online monitoring device and system for electric energy quality |
| CN106124909A (en) * | 2016-08-30 | 2016-11-16 | 淮北工科检测检验有限公司 | A kind of electric energy detection metering system |
| CN107340494A (en) * | 2017-08-07 | 2017-11-10 | 三峡大学 | A kind of intelligent power metering device on-line testing system |
-
2013
- 2013-03-28 CN CN 201320149539 patent/CN203178364U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675519A (en) * | 2013-10-23 | 2014-03-26 | 国家电网公司 | Online monitoring device and system for electric energy quality |
| CN106124909A (en) * | 2016-08-30 | 2016-11-16 | 淮北工科检测检验有限公司 | A kind of electric energy detection metering system |
| CN107340494A (en) * | 2017-08-07 | 2017-11-10 | 三峡大学 | A kind of intelligent power metering device on-line testing system |
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Granted publication date: 20130904 |
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| CX01 | Expiry of patent term |