CN203012950U - Voltage monitoring system based on phase sequence identification of transformer station area - Google Patents
Voltage monitoring system based on phase sequence identification of transformer station area Download PDFInfo
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- CN203012950U CN203012950U CN 201220747911 CN201220747911U CN203012950U CN 203012950 U CN203012950 U CN 203012950U CN 201220747911 CN201220747911 CN 201220747911 CN 201220747911 U CN201220747911 U CN 201220747911U CN 203012950 U CN203012950 U CN 203012950U
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- phase sequence
- voltage monitoring
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Abstract
The utility model relates to a voltage monitoring system based on the phase sequence identification of a transformer station area. The voltage monitoring system comprises a mainframe suitable for sending corresponding phase sequence codes via power wires, and a voltage monitor for receiving the phase sequence codes via the power wires to judge phase sequences of the power wires, wherein the mainframe is connected to the head ends of the power wires with three phases, and the voltage monitor is connected to the tail ends of the power wires with various phases respectively. The voltage monitoring system disclosed by the utility model is capable of rapidly judging the corresponding phase sequence of each power wire, and suitable for detecting in districts with non-uniform phase voltage distribution, such as rural areas; and a power supply unit judges whether the output of a transformer is balanced or not according to the phase sequences of the detected power wires, so as to lower the current of a neutral wire.
Description
Technical field
This practicality relates to a kind of energy monitoring apparatus, particularly a kind of voltage monitoring system based on the identification of transformer platform area phase sequence.
Background technology
Power distribution network low-voltage customer terminal voltage quality is one of subject matter of low-voltage network always, rapid growth along with load, vast rural area, even the urban zone because of supply line head, transformer capacity is little, electrical network is aging etc., and reason causes the problems such as line drop is excessive, current supply loss is large, local serious regional terminal voltage is only tens volts, cause user's consumer normally not use, seriously affected resident's life.
For realizing circuit modification, analysis causes the definite reason of this kind phenomenon, traditional way has two kinds, first method is by power supply station's personnel, common situation is regularly to be used the voltage data of each circuit head and end of multimeter survey record by the personnel of power supply station, and the voltage data analysis by to record draws the line voltage distribution pressure drop, this method can not detect the phase sequence of voltage, and the voltage drop of namely measuring can't judge it is the voltage of which phase; Second method is that traditional voltage monitoring system is installed, the voltage of monitoring feeder ear and user side, but each voltage monitoring system the phase sequence situation is is poorly appraised and decided, this just can't determine that this voltage monitoring system is to belong to which phase supply line, also just can't calculate the voltage drop of each phase supply line.
Said method all can't accurately be judged voltage phase sequence, therefore can not analyze the voltage drop rule that produces and the impact that causes.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of voltage monitoring system based on the identification of transformer platform area phase sequence, this system can accurately calculate the voltage phase sequence of an arbitrary phase circuit in A under transformer platform area, B, C three-phase, is convenient to this phase sequence pressure drop of follow-up measurement.
In order to solve the problems of the technologies described above, the utility model provides a kind of voltage monitoring system based on the identification of transformer platform area phase sequence, comprise: be suitable for sending by line of electric force the main frame of corresponding phase sequence coding, be suitable for receiving by line of electric force the voltage monitoring instrument that described phase sequence encodes to judge the line of electric force phase sequence; Described main frame is connected in the head end of three-phase power line, and described each voltage monitoring instrument is connected to the end of each phase line of electric force.
Further, described main frame comprises: be suitable for generating the ARM module of corresponding phase sequence coding, the carrier modulation demodulator circuit that is connected with the ARM module, this carrier modulation demodulator circuit is connected with a coupled circuit, and described coupled circuit comprises that three coupling electronic circuits are coupled with three-phase power line respectively.
Technique scheme of the present utility model has the following advantages compared to existing technology: this novel voltage monitoring system can judge the corresponding phase sequence of each line of electric force fast, the area that is adapted at the phase voltage maldistributions such as rural area is detected, whether the output that power supply unit judges transformer according to the phase sequence of the line of electric force that detects balance, to lower neutral current.
Description of drawings
For content of the present utility model is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the utility model is described in further detail, wherein
Fig. 1 is the syndeton schematic diagram that is applicable to the voltage monitoring system of transformer platform area phase sequence identification of the present utility model;
Fig. 2 is the structural representation of main frame in voltage monitoring system of the present utility model.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples:
See Fig. 1, a kind of voltage monitoring system based on the identification of transformer platform area phase sequence comprises: be suitable for sending by line of electric force the main frame of corresponding phase sequence coding, be suitable for receiving by line of electric force each voltage monitoring instrument that described phase sequence encodes to judge the line of electric force phase sequence; Described main frame is connected in the head end of three-phase power line, and described each voltage monitoring instrument is connected to the end of each phase line of electric force.
See Fig. 2, described main frame comprises: be suitable for generating the ARM module of corresponding phase sequence coding, the carrier modulation demodulator circuit that is connected with the ARM module, this carrier modulation demodulator circuit is connected with a coupled circuit, and described coupled circuit comprises that three coupling electronic circuits are coupled with three-phase power line respectively.(electronic circuit that wherein is coupled does not draw)
Described each voltage monitoring instrument comprises that also liquid crystal display is to show corresponding phase sequence.
Described voltage monitoring instrument can connection and resident or with carrying out judging phase order on the socket of electric unit.
Described main frame by line of electric force send that A is encoded to 00 mutually, B is encoded to 01 mutually, C is encoded to 10 mutually, as long as described each voltage monitoring instrument that is positioned at end receives above-mentioned corresponding encoded and can judge each phase sequence, receiving 00 end that judgement connects is the A phase, by that analogy.
Obviously, above-described embodiment is only for the utility model example clearly is described, and is not to be restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that spirit of the present utility model extended out and still are among protection domain of the present utility model.
Claims (2)
1. voltage monitoring system based on transformer platform area phase sequence identification is characterized in that comprising:
Be suitable for sending by line of electric force the main frame of corresponding phase sequence coding, be suitable for receiving by line of electric force the voltage monitoring instrument that described phase sequence encodes to judge the line of electric force phase sequence;
Described main frame is connected in the head end of three-phase power line, and described voltage monitoring instrument is connected to the end of each phase line of electric force.
2. the voltage monitoring system based on transformer platform area phase sequence identification according to claim 1, it is characterized in that, described main frame comprises: be suitable for generating the ARM module of corresponding phase sequence coding, the carrier modulation demodulator circuit that is connected with the ARM module, this carrier modulation demodulator circuit is connected with coupled circuit, and described coupled circuit comprises that three coupling electronic circuits are coupled with three-phase power line respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220747911 CN203012950U (en) | 2012-12-29 | 2012-12-29 | Voltage monitoring system based on phase sequence identification of transformer station area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220747911 CN203012950U (en) | 2012-12-29 | 2012-12-29 | Voltage monitoring system based on phase sequence identification of transformer station area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203012950U true CN203012950U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220747911 Expired - Fee Related CN203012950U (en) | 2012-12-29 | 2012-12-29 | Voltage monitoring system based on phase sequence identification of transformer station area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203012950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374197A (en) * | 2015-11-19 | 2016-03-02 | 国家电网公司 | Low voltage district electric energy meter phase line identification method |
-
2012
- 2012-12-29 CN CN 201220747911 patent/CN203012950U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374197A (en) * | 2015-11-19 | 2016-03-02 | 国家电网公司 | Low voltage district electric energy meter phase line identification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Jiali Inventor after: Jing Changqing Inventor after: Du Minsheng Inventor after: Wang Wei Inventor after: Wang Yang Inventor after: Wang Runhong Inventor after: Jia Pengfei Inventor before: Zhu Xiaoying |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHU XIAOYING TO: CHEN JIALI JING CHANGQING DU MINSHENG WANG WEI WANG YANG WANG RUNHONG JIA PENGFEI |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20211229 |