CN202424316U - Power quality monitoring terminal applicable to smart grid - Google Patents
Power quality monitoring terminal applicable to smart grid Download PDFInfo
- Publication number
- CN202424316U CN202424316U CN2012200010955U CN201220001095U CN202424316U CN 202424316 U CN202424316 U CN 202424316U CN 2012200010955 U CN2012200010955 U CN 2012200010955U CN 201220001095 U CN201220001095 U CN 201220001095U CN 202424316 U CN202424316 U CN 202424316U
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- China
- Prior art keywords
- power quality
- monitoring terminal
- cpu
- quality monitoring
- real
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model relates to a power quality monitoring terminal applicable to a smart grid, which has the technical characteristic of comprising an optical fiber transceiver and a CPU (Central Processing Unit), wherein the optical fiber transceiver is connected with an electronic transformer in a process level via an optical fiber and is used for receiving real-time sampled data output by the electronic transformer and transmitting the real-time sampled data to the CPU; and the CPU performs power analysis and calculation on the real-time sampled data and uploads calculated power quality data to a station level via a network interface. The power quality monitoring terminal is reasonable in design, the function of simultaneously monitoring multiple outgoing lines via one monitoring terminal is realized, the equipment cost is lowered, the influence of electromagnetic interference is effectively avoided, the stability, the reliability, the safety and the like are greatly improved, the accuracy required by power quality analysis is satisfied, and the power quality monitoring requirement of the smart grid is met.
Description
Technical field
The utility model belongs to the intelligent grid field, especially a kind of electric energy quality monitoring terminal that is applicable to intelligent grid.
Background technology
Great changes have taken place in intelligent grid and traditional electrical network on the analog acquisition mode, the analog-signal transitions of being imported from conventional voltage, current transformer by cable is the Electrical Instrument Transducers with Digital signal by telecommunication cable or optical fiber input.The tradition electricity grid substation; As shown in Figure 2; Send the analog signal of each harvester (comprising protection, electric energy quality monitoring) 100V/5A by electromagnetic potential, current transformer to through cable, each harvester needs configuration voltages, current transformer, and this analog signal is transformed to the small-signal that embedded equipment can receive; Become digital signal through the AD conversion, carry out related operation by CPU.Because electromagnetic potential, current transformer volume ratio are bigger, unitary device can not realize simultaneously many outlets being monitored, and each road analog quantity all need dispose a high-precision AD conversion, and cost is higher.Therefore, adopt the electric energy quality monitoring terminal of traditional electrical network can not satisfy the needs of intelligent grid.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of electric energy quality monitoring terminal that is applicable to intelligent grid that can monitor and satisfy the intelligent grid demand simultaneously to many outlets is provided.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of electric energy quality monitoring terminal that is applicable to intelligent grid; Connect and compose by fiber optical transceiver and CPU; Fiber optical transceiver links to each other with the electronic mutual inductor of process layer through optical fiber and is used for receiving the real-time sampling data of electric mutual inductor output and being sent to CPU; CPU carries out the electric energy analytical calculation to the real-time sampling data that receive, and the power quality data that calculates is uploaded to station level through network interface.
And described CPU is DSP or FPGA.
And described real-time sampling data comprise the voltage and current data of many outlets.
And described power quality data comprises voltage deviation, frequency departure, harmonic wave, voltage fluctuation and flickering, three-phase imbalance data.
The advantage and the good effect of the utility model are:
The utility model adopts fiber optical transceiver to receive digitlization real-time sampling data from electronic mutual inductor, and analyzes accordingly and handle, and has not only simplified the hardware configuration of monitoring terminal; Realize once, effective electrical isolation of secondary device, and improved the accuracy and the reliability of monitoring terminal, realize the digital applications of data acquisition link; Avoided the influence of electromagnetic interference, obtained large increase, for power quality analysis provides accurately, the authentic data source at aspects such as stability, reliability, fail safes; Satisfy electric energy quality monitoring and analyzed needed precision; Simultaneously, owing to include the switching signal of many outlets in the sampled data bag that fiber optical transceiver receives, therefore; A monitoring terminal can realize monitoring simultaneously many outlet functions, has practiced thrift the cost of equipment greatly.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model;
Fig. 2 is the circuit block diagram of traditional transformer station.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is done further detailed description:
A kind of electric energy quality monitoring terminal that is applicable to intelligent grid; As shown in Figure 1; Connect and compose by fiber optical transceiver and CPU; Fiber optical transceiver is connected through the electronic mutual inductor of optical fiber with the process layer, and fiber optical transceiver receives real-time sampling data such as the voltage, electric current of electric mutual inductor output and is sent among the CPU, and CPU carries out the electric energy analytical calculation to real-time sampling data such as the voltage that receives, electric currents; Obtain quality of power supply technical indicators such as voltage deviation, frequency departure, harmonic wave, voltage fluctuation and flickering, three-phase imbalance, and analysis result is uploaded station level through network interface.In the present embodiment, fiber optical transceiver adopts the fiber optical transceiver of AVAGO company, and CPU can adopt DSP (digital signal processor) or FPGA (field programmable gate array) or other microprocessor modules.
Because intelligent substation adopts electronic mutual inductor; It is through optical fiber output digital signal, and this digital signal can directly be received by electric energy quality monitoring terminal, saves middle by the transform part of analog quantity to digital quantity; Only needing to carry out the data-signal conversion according to IEC61850 related protocol regulation gets final product; CPU can directly carry out related operation to this signal, calculates each item monitoring index of the quality of power supply, owing to include the switching signal of many outlets in the packet that fiber optical transceiver receives; A CPU can realize monitoring simultaneously many outlets, has practiced thrift the cost of equipment greatly.Simultaneously, be light signal and the unconventional signal of telecommunication is reduced by the influence of electromagnetic interference greatly because electric energy quality monitoring terminal receives, therefore, improved the electromagnetic compatibility level of whole terminal.
The course of work of the utility model is: this monitoring terminal carries out opto-electronic conversion through fiber optical transceiver with the light signal that process layer electronic mutual inductor sends; Resolve Internet protocol (TCP/IP); According to the IEC61850 protocol specification, the packet that decoding is received obtains voltage, real-time current sampled data; Then sampled data is carried out the electric energy analysis; Quality of power supply technical indicators such as calculating voltage deviation, frequency departure, harmonic wave, voltage fluctuation and flicker, three-phase imbalance, and analysis result is uploaded station level through network, realize real-time monitoring and control to the quality of power supply.
It is emphasized that; The described embodiment of the utility model is illustrative; Rather than it is determinate; Therefore the utility model is not limited to the embodiment described in the embodiment, every by those skilled in the art according to other execution modes that the technical scheme of the utility model draws, belong to the scope of the utility model protection equally.
Claims (2)
1. electric energy quality monitoring terminal that is applicable to intelligent grid; It is characterized in that: connect and compose by fiber optical transceiver and CPU; Fiber optical transceiver links to each other with the electronic mutual inductor of process layer through optical fiber and is used for receiving the real-time sampling data of electric mutual inductor output and being sent to CPU; CPU carries out the electric energy analytical calculation to the real-time sampling data that receive, and the power quality data that calculates is uploaded to station level through network interface.
2. the electric energy quality monitoring terminal that is applicable to intelligent grid according to claim 1 is characterized in that: described CPU is DSP or FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200010955U CN202424316U (en) | 2012-01-04 | 2012-01-04 | Power quality monitoring terminal applicable to smart grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200010955U CN202424316U (en) | 2012-01-04 | 2012-01-04 | Power quality monitoring terminal applicable to smart grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424316U true CN202424316U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200010955U Expired - Lifetime CN202424316U (en) | 2012-01-04 | 2012-01-04 | Power quality monitoring terminal applicable to smart grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424316U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565583A (en) * | 2012-01-04 | 2012-07-11 | 天津市电力公司 | Power quality monitoring terminal for switch-in electronic mutual inductor |
| CN103440761A (en) * | 2013-09-10 | 2013-12-11 | 国家电网公司 | Online monitoring method and system for dielectric loss of capacitive type device |
-
2012
- 2012-01-04 CN CN2012200010955U patent/CN202424316U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565583A (en) * | 2012-01-04 | 2012-07-11 | 天津市电力公司 | Power quality monitoring terminal for switch-in electronic mutual inductor |
| CN103440761A (en) * | 2013-09-10 | 2013-12-11 | 国家电网公司 | Online monitoring method and system for dielectric loss of capacitive type device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
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| CX01 | Expiry of patent term |