CN201717677U - Distribution transformer failure monitoring terminal - Google Patents
Distribution transformer failure monitoring terminal Download PDFInfo
- Publication number
- CN201717677U CN201717677U CN2010202570789U CN201020257078U CN201717677U CN 201717677 U CN201717677 U CN 201717677U CN 2010202570789 U CN2010202570789 U CN 2010202570789U CN 201020257078 U CN201020257078 U CN 201020257078U CN 201717677 U CN201717677 U CN 201717677U
- Authority
- CN
- China
- Prior art keywords
- main control
- control chip
- voltage
- distribution transformer
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04S40/126—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 wireless data transmission
Abstract
The utility model relates to a distribution transformer failure monitoring terminal, which comprises a main control chip. A signal input end of the main control chip is connected with a three-phase current and voltage input circuit and a switching signal input circuit, the three-phase current and voltage input circuit is used for acquiring three-phase current and voltage signals, the switching signal input circuit is used for acquiring position signals of a switch of a circuit breaker, and a signal output end of the main control chip connected with the circuit breaker is communicated with a main station. The distribution transformer failure monitoring terminal can monitor limit exceeding conditions of voltage, current, power, zero sequence current, power factor, current imbalance and voltage imbalance and timely reports the main station to prevent abnormal work of a distribution transformer, can monitor existence of failures such as disconnection of a voltage measuring loop, voltage inverse phase sequence, voltage reverse polarity, disconnection of a high voltage side, current disconnection of a low voltage side, mistaken current line connection, alternating current power cut and the like in real time and timely upload to the main station, and prevents electric quantity measurement errors caused by wire connection errors.
Description
Technical field
The utility model relates to distribution network automated field, especially a kind of distribution transformer failure monitoring terminal.
Background technology
There is the situation of the light low pressure of heavy high pressure in traditional distribution network automated field, and automatization terminal focuses mostly in transformer station, does not have suitable automatization terminal for the many geographical distribution networks that disperse of point.And because the numerous user of distribution network linking number can cause the reliability decrease of powering if can't in time find fault.
Power supply department is many at the other ammeter of installing of distribution transformer at present, and perhaps collection is copied terminal and adopted power carrier or telephone network transmission data.The former needs manually to check meter to the scene, can't monitor in real time, can't in time find failure problems; There is the passage shakiness in the latter, the problem that the communication reliability is not high.Even come on the transfer of data simultaneously,, can't in time point out to the monitor staff owing to, cause real fault message to be submerged in a large amount of useless data not at the differentiation of fault message.
The utility model content
The purpose of this utility model is to provide a kind of real-time monitoring, in time finds the distribution transformer failure monitoring terminal of failure problems.
For achieving the above object, the utility model has adopted following technical scheme: a kind of distribution transformer failure monitoring terminal, comprise main control chip, the signal input part of main control chip connects three-phase current, the voltage input circuit that is used to gather three-phase current, voltage signal, and the switching signal input circuit that is used to gather the killer switch position signalling, the signal output part of main control chip links to each other with circuit breaker, the signal output part of main control chip and main website communication.
As shown from the above technical solution, the utility model can be monitored the operation conditions of distribution transforming transformer in real time, and uploads data to main website by radio channel.The utility model can be monitored the out-of-limit situation of voltage, electric current, power, zero-sequence current, power factor, current imbalance, Voltage unbalance of distribution transformer and in time be reported main website to prevent the distribution transformer operation irregularity; But the faults such as voltage measurement circuit broken string, voltage negative phase sequence, voltage reversed polarity, high-pressure side broken string, low-pressure side electric current broken string, electric current error connection, interchange dead electricity that whether have of real-time monitoring device wiring are also in time uploaded main website, prevent because wiring error causes measuring the electric weight mistake.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Embodiment
A kind of distribution transformer failure monitoring terminal, comprise main control chip 1, the signal input part of main control chip 1 connects three-phase current, the voltage input circuit 2,3 that is used to gather three-phase current, voltage signal, and the switching signal input circuit 4 that is used to gather circuit breaker 8 switch position signals, the signal output part of main control chip 1 links to each other with circuit breaker 8, the signal output part of main control chip 1 and main website 5 communications, as shown in Figure 1.As seen, the utility model possesses the out-of-limit defencive function of fault current, and when electric current surpasses set point, but tripping outlet breaker and automatic reclosing are once, prevent transient fault.
In conjunction with Fig. 1, described three-phase current, voltage input circuit 2,3 link to each other with the signal input part of main control chip 1 by A/D converter 6, the signal output part of described main control chip 1 links to each other with the switching node of circuit breaker 8 by relay 7, and the signal output part of main control chip 1 is by wireless network module 9 and main website 5 communications.Described wireless network module 9 is GPRS wireless network module or cdma wireless mixed-media network modules mixed-media.
In conjunction with Fig. 1, described main control chip 1 has 8 way switch amount input interfaces and 4 way switch amount output interfaces.The signal input part of described main control chip 1 links to each other with direct-flow input circuit 10, reset circuit 11 and memory circuit 12, infrared interface, RS232 interface and RS485 interface are set on the signal output part of described main control chip 1, the signal output part of main control chip 1 links to each other with human-computer interaction module 13, pulse output module 14 and reactive power compensation output module 15, and described human-computer interaction module 13 adopts liquid crystal touch screen; Described pulse output module 14 is used for the ammeter metering, can replace ammeter and carry out electric energy metrical; Described reactive power compensation output module 15 can connect building-out capacitor, carries out reactive power compensation on the spot, reduces line loss.
By real-time collection voltage and current signal, main control chip 1 adopts fft algorithm to calculate wherein negative phase-sequence, positive sequence, zero-sequence component, has the out-of-limit class fault of parameters of electric power wherein and installs wiring class fault by software analysis.Wherein, device wiring class fault comprises voltage class wiring faults and current capacity wiring faults, and voltage class wiring faults comprises: voltage broken string, voltage negative phase sequence, voltage reversed polarity; The current capacity wiring faults comprises: electric current reversed polarity, electric current negative phase sequence, electric current with the voltage misphase, exchange dead electricity.Electric current wiring class fault adopts 6 partition method correct judgment wiring, considers actual empirical value simultaneously, prevents erroneous judgement, presents to the correct wiring state of user on the liquid crystal touch screen interface.
The detection judgement of device wiring faults is to carry out voltage circuit earlier to detect in proper order, after voltage circuit is correct, carries out current circuit again and detects, and step is as follows:
(1) the voltage circuit correctness detects:
The first step: certain phase voltage is zero, then is the phase shortage broken string, and there is residual voltage simultaneously in broken string; Second step: certain is at acceptability limit, and other two phase voltages raise
Be the voltage reversed polarity doubly; The 3rd step: positive sequence voltage is greater than negative sequence voltage, otherwise then is the voltage inversion preface.
(2) the current circuit correctness detects:
Under the normal condition, angle is in theory between ± pi/2 between phase current and the phase voltage.Phase current angle abnormal cause has: the combination of reversed polarity, alternate cross exchanged and two class problems.Detection method is: the first step is wrong the examination, and which big class misjudgment is, such as being the big class of reversed polarity; Second step was wrong line reasoning, i.e. misjudgment is a reversed polarity how.
Claims (6)
1. distribution transformer failure monitoring terminal, it is characterized in that: comprise main control chip (1), the signal input part of main control chip (1) connects three-phase current, the voltage input circuit (2,3) that is used to gather three-phase current, voltage signal, and the switching signal input circuit (4) that is used to gather circuit breaker (8) switch position signal, the signal output part of main control chip (1) links to each other with circuit breaker (8), the signal output part of main control chip (1) and main website (5) communication.
2. distribution transformer failure monitoring terminal according to claim 1, it is characterized in that: described three-phase current, voltage input circuit (2,3) link to each other with the signal input part of main control chip (1) by A/D converter (6), the signal output part of described main control chip (1) links to each other with the switching node of circuit breaker (8) by relay (7), and the signal output part of main control chip (1) is by wireless network module (9) and main website (5) communication.
3. distribution transformer failure monitoring terminal according to claim 1 is characterized in that: described main control chip (1) has 8 way switch amount input interfaces and 4 way switch amount output interfaces.
4. distribution transformer failure monitoring terminal according to claim 1, it is characterized in that: the signal input part of described main control chip (1) links to each other with direct-flow input circuit (10), reset circuit (11) and memory circuit (12), infrared interface, RS232 interface and RS485 interface are set on the signal output part of described main control chip (1), and the signal output part of main control chip (1) links to each other with human-computer interaction module (13), pulse output module (14) and reactive power compensation output module (15).
5. distribution transformer failure monitoring terminal according to claim 2 is characterized in that: described wireless network module (9) is GPRS wireless network module or cdma wireless mixed-media network modules mixed-media.
6. distribution transformer failure monitoring terminal according to claim 3 is characterized in that: described human-computer interaction module (13) adopts liquid crystal touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202570789U CN201717677U (en) | 2010-07-09 | 2010-07-09 | Distribution transformer failure monitoring terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202570789U CN201717677U (en) | 2010-07-09 | 2010-07-09 | Distribution transformer failure monitoring terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717677U true CN201717677U (en) | 2011-01-19 |
Family
ID=43463683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202570789U Expired - Fee Related CN201717677U (en) | 2010-07-09 | 2010-07-09 | Distribution transformer failure monitoring terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201717677U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130505A (en) * | 2011-03-09 | 2011-07-20 | 珠海博威微电子有限公司 | High-voltage switch controller with metering function |
| CN104280071A (en) * | 2014-10-16 | 2015-01-14 | 国家电网公司 | Fault alarming device and fault detecting method for oil-immersed power transformers |
| CN114137296A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
| CN114256746A (en) * | 2021-12-20 | 2022-03-29 | 江苏弘历电气有限公司 | High-safety switch cabinet with misoperation alarming function |
-
2010
- 2010-07-09 CN CN2010202570789U patent/CN201717677U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130505A (en) * | 2011-03-09 | 2011-07-20 | 珠海博威微电子有限公司 | High-voltage switch controller with metering function |
| CN104280071A (en) * | 2014-10-16 | 2015-01-14 | 国家电网公司 | Fault alarming device and fault detecting method for oil-immersed power transformers |
| CN104280071B (en) * | 2014-10-16 | 2016-07-06 | 国家电网公司 | A kind of fault detection method of oil-immersed power transformer accident warning device |
| CN114137296A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
| CN114137296B (en) * | 2021-11-27 | 2024-04-09 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
| CN114256746A (en) * | 2021-12-20 | 2022-03-29 | 江苏弘历电气有限公司 | High-safety switch cabinet with misoperation alarming function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101908780B (en) | Intelligent remote monitoring box-type substation | |
| CN201583631U (en) | Online-detecting device and system of storage battery | |
| CN101409008B (en) | Integrated system for monitor, management and remotely meter-reading of power distribution network | |
| CN101738565B (en) | Adaptive fault indicator | |
| CN202103478U (en) | Comprehensive intelligent distribution box | |
| CN101873010A (en) | Intelligent monitoring terminal of electric distribution system | |
| CN201717677U (en) | Distribution transformer failure monitoring terminal | |
| CN109687590A (en) | A kind of be classified stops send a telegram in reply report method, system | |
| CN104635198A (en) | Remote monitoring and diagnosing method for electric energy metering device with timely fault finding function | |
| CN201750078U (en) | Intelligent remote control box type substation | |
| CN104868845A (en) | Device and method for monitoring data of embedded solar photovoltaic module data | |
| CN104678348A (en) | Remote monitoring and diagnosing method for electric energy metering device with high efficiency | |
| CN104333107B (en) | Direct-current screen power source device utilizing hybrid power sources | |
| CN104009268A (en) | Intelligent cell, intelligent cell monitoring system and intelligent cell monitoring method | |
| CN202512197U (en) | State detecting system for fuse protectors of combiner box | |
| CN104714206A (en) | Remote monitoring and diagnosing method for electric energy metering device capable of finding faults timely | |
| WO2020103640A1 (en) | Sensing terminal device and method for distribution transformer district | |
| CN201438637U (en) | Failure capture terminal used for electrical power distribution automation system | |
| CN103353561A (en) | System and method for detecting alternating-current circuit of wind turbine generator | |
| CN201742167U (en) | Intelligent monitoring terminal of power distribution system | |
| CN204462350U (en) | Photovoltaic combining inverter low voltage crossing and island effect comprehensive detection device | |
| CN104656050A (en) | Manpower-saving remote monitoring and diagnosing method for electric energy metering device | |
| CN104614700A (en) | Remote monitoring and diagnosing method for electric energy metering device with good real-time performance | |
| CN210039082U (en) | Intelligent electricity utilization safety detection equipment based on EnOcean communication technology | |
| CN104656052A (en) | Remote monitoring and diagnosing method for loss-reducing and efficiency-improving electric energy metering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 230031, No. 9, Bridge Road, Shushan Industrial Park, Hefei, Anhui Patentee after: Anhui Zhongxing Jiyuan Information Technology Co.,Ltd. Address before: Daoxiang road Hefei City, Anhui province 230022 Shushan New Industrial Park No. 9 Patentee before: Anhui Zhongxing Jiyuan Information Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |