CN202929090U - Real-time load current and zero-sequence current detection system of three-phase power transmission and distribution circuit - Google Patents
Real-time load current and zero-sequence current detection system of three-phase power transmission and distribution circuit Download PDFInfo
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- CN202929090U CN202929090U CN 201220603746 CN201220603746U CN202929090U CN 202929090 U CN202929090 U CN 202929090U CN 201220603746 CN201220603746 CN 201220603746 CN 201220603746 U CN201220603746 U CN 201220603746U CN 202929090 U CN202929090 U CN 202929090U
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Abstract
The utility model relates to a real-time load current and zero-sequence current detection system of a three-phase power transmission and distribution circuit, comprising detection apparatuses arranged at all test points of the three-phase power transmission and distribution circuit. The detection apparatuses comprise a first test point apparatus, a second test point apparatus and a third test point apparatus; the first test point apparatus is arranged on the A phase line of the three-phase power transmission and distribution circuit; the second test point apparatus is arranged on the B phase line of the three-phase power transmission and distribution circuit; the third test point apparatus is arranged on the C phase line of the three-phase power transmission and distribution circuit; each of the first test point apparatus, the second test point apparatus and the third test point apparatus includes a wireless transmit-receive module; and the real-time load current and zero-sequence current detection system of a three-phase power transmission and distribution circuit also includes a data detection apparatus arranged on the wire rod of the three-phase power transmission and distribution circuit, and the data detection apparatus is connected with a wireless transmit-receive module. The real-time load current and zero-sequence current detection system of a three-phase power transmission and distribution circuit is advantageous in that the equipment is simplified, construction cost is low, and dismounting is convenient.
Description
Technical field
The utility model belongs to a kind of transmission line of electricity checkout equipment, particularly relate to a kind ofly can solve the short circuit of 10KV high voltage circuit, the failure detection system for high-pressure power transmission line of the fault such as open circuit.
Background technology
In circuit transmission of electricity process, in a single day circuit breaks down, its lower line transformer can stop to customer power supply, this fault can cause corresponding transformer platform area subordinate user power failure to cause the loss of industrial and agricultural production, the masses' daily life is caused have a strong impact on, the safe operation for higher level's transformer simultaneously also causes certain pressure.The load current of electric line, zero-sequence current are a significant data information of detection line fault.in those early years someone proposes a kind of line-failure indicator, its principle of work is passed through for adopting the multiturn inductive coil to have the large electric current of burst near the 10kv circuit when ground connection occurs circuit, line electricity fails to be convened for lack of a quorum and reduces suddenly in the time of line broken circuit, judge that by the output current of designated length in the time of judgement inductive coil line fault is aided with simultaneously acousto-optic hint and carries out the alarm prompting, it is poor that this line fault testing device has real-time, rate of false alarm is high, decision procedure is single, dismantle not convenient, the fault of the artificial confirmation that the error judgement that pure artificial judgment causes causes, can't with the shortcoming that manifests communication network and merge, these problems have caused this device to provide the fault distinguishing information reliability very poor, even lose its malfunction meaning in the applied environment of a lot of thunderstorms area and forest complex area.in prior art, can in time confirm the trouble spot of ultra-high-tension power transmission line by present information network and computer technology, the effect that simple pointer is beyond one's reach that needs manual inspection before having, because monitoring point equipment is more than one, can arrange flexibly according to user's request, so have again the investment that can distribute, enlarge flexibly the effect that power system capacity promotes bearing accuracy, but, above-mentioned testing circuit is generally take three phase line as one group of detecting unit, complete pick-up unit and the signal processing apparatus that is attached thereto all are installed on every group of detecting unit, implantation of device is intensive and the wire punching must be installed, bulky inconvenience dismounting, necessary power cut construction, impact is produced, cost is high.
Summary of the invention
The utility model provides a kind of real-time load current of three-phase electric line, the detection system of zero-sequence current for solving the technical matters that exists in known technology, is intended to solve the load current of traditional electrical circuit, the problem that the detection system implantation of device is intensive, cost is high, volume is large and the installation cost is high of zero-sequence current.
the technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is: a kind of real-time load current of three-phase electric line, the detection system of zero-sequence current, comprise the pick-up unit that is used for measuring check point parameter of living on each check point that is arranged on three-phase transportion wire road, described pick-up unit is by the first check point device, the second check point device and the 3rd check point device consist of, described the first check point device is arranged on the A phase circuit on three-phase transportion wire road, described the second check point device is arranged on the B phase circuit on three-phase transportion wire road, described the 3rd check point device is arranged on the C phase circuit on three-phase high-voltage transportion wire road, the first check point device, include radio receiving transmitting module on the second check point device and the 3rd check point device, also comprise the data detection device on the line bar that is arranged on three-phase transportion wire road, described data detection device upper joint has radio receiving transmitting module.
The utility model can also adopt following technical scheme:
Described the first check point device includes and is arranged on the first electrical aperture current sensor that transportion wire road A goes up mutually; Described the second check point device includes and is arranged on the second electrical aperture current sensor that transportion wire road B goes up mutually; Described the 3rd check point device includes and is arranged on the 3rd electrical aperture current sensor that transportion wire road C goes up mutually.
Described check point device comprises radio receiving transmitting module.
Described each radio receiving transmitting module is provided with the ID address setting signal, and described radio receiving transmitting module is corresponding according to described ID address setting signal sets an ID address.
Described data detection device comprises electricity-fetching module, signal processing circuit and radio receiving transmitting module.
Further, data detection device is sent to server by optical fiber or wireless relay interface with data message.
Advantage and the good effect that the utlity model has are: the utility model is sampled to line current by pick-up unit, in real time data are transferred on data detection device by the Wireless Data Transmission mode, data detection device is installed on online bar, data detection device on line bar can have an area of the data message on the array pick-up unit in scope by radio-frequency signal detection, and data detection device carries out Treatment Analysis to real-time current numerical value and obtains zero-sequence current numerical value.This detection system is compared conventional art and is had simplified equipment, and construction cost is low, the advantage of convenient disassembly.
Description of drawings
Fig. 1 is system principle frame diagram of the present utility model.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
see also Fig. 1, a kind of real-time load current of three-phase electric line, the detection system of zero-sequence current, comprise the pick-up unit that is used for measuring check point parameter of living on each check point that is arranged on three-phase transportion wire road, described pick-up unit is by the first check point device, the second check point device and the 3rd check point device consist of, described the first check point device is arranged on the A phase circuit on three-phase transportion wire road, described the second check point device is arranged on the B phase circuit on three-phase transportion wire road, described the 3rd check point device is arranged on the C phase circuit on three-phase high-voltage transportion wire road, the first check point device, be separately installed with radio receiving transmitting module on the second check point device and the 3rd check point device, pick-up unit on the three-phase transportion wire and radio receiving transmitting module consist of one group of Data Detection unit, the line bar on three-phase transportion wire road is provided with data detection device, the data detection device upper joint has radio receiving transmitting module, the information that radio receiving transmitting module can the receive data sending module sends out, one sets of data pick-up unit can receive the data message of data transmission blocks sending place in the interior array data detecting unit of certain limit, afterwards every group of information is carried out computing, detect with this real-time load current, zero-sequence current to the three-phase delivery circuit.Data detection device comprises electricity-fetching module and signal processing circuit.
The first check point device includes and is arranged on the first electrical aperture current sensor that transportion wire road A goes up mutually; The second check point device includes and is arranged on the second electrical aperture current sensor that transportion wire road B goes up mutually; The 3rd check point device includes and is arranged on the 3rd electrical aperture current sensor that transportion wire road C goes up mutually.Current sensor is comprised of power taking CT, sampling iron core, filtering circuit, sample circuit, center module, wireless data transmission module group, Hall element used directly reads the magnetic field strength date in iron core, therefore the various errors that do not exist traditional mutual inductor to cause due to the coil equivalent action, read precision high, rudimentary little, with low cost.
Each radio receiving transmitting module is provided with the ID address setting signal, described radio receiving transmitting module is corresponding according to described ID address setting signal sets an ID address, and data detection device can receive the data message that each radio receiving transmitting module sends and carry out differentiating and processing and calculate by radio frequency transmission.
Above-mentioned embodiment is only to functional descriptions of the present utility model; be not that design of the present utility model and scope are limited; under the prerequisite that does not break away from the utility model design philosophy; various distortion and improvement that those skilled in the art make the technical solution of the utility model are within all dropping on protection domain of the present utility model.
Claims (6)
1. the real-time load current of a three-phase electric line, the detection system of zero-sequence current, comprise the pick-up unit that is used for measuring check point parameter of living on each check point that is arranged on three-phase transportion wire road, it is characterized in that: described pick-up unit is by the first check point device, the second check point device and the 3rd check point device consist of, described the first check point device is arranged on the A phase circuit on three-phase transportion wire road, described the second check point device is arranged on the B phase circuit on three-phase transportion wire road, described the 3rd check point device is arranged on the C phase circuit on three-phase high-voltage transportion wire road, the first check point device, the second check point device and the 3rd check point device include radio receiving transmitting module, also comprise the data detection device on the line bar that is arranged on three-phase transportion wire road, described data detection device upper joint has radio receiving transmitting module.
2. detection system according to claim 1, it is characterized in that: described the first check point device includes and is arranged on the first electrical aperture current sensor that transportion wire road A goes up mutually.
3. detection system according to claim 1, it is characterized in that: described the second check point device includes and is arranged on the second electrical aperture current sensor that transportion wire road B goes up mutually.
4. detection system according to claim 1, it is characterized in that: described the 3rd check point device includes and is arranged on the 3rd electrical aperture current sensor that transportion wire road C goes up mutually.
5. detection system according to claim 1, it is characterized in that: described data detection device comprises electricity-fetching module and signal processing circuit.
6. detection system according to claim 1, it is characterized in that: described each radio receiving transmitting module is provided with the ID address setting signal, and described radio receiving transmitting module is corresponding according to described ID address setting signal sets an ID address.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603746 CN202929090U (en) | 2012-11-14 | 2012-11-14 | Real-time load current and zero-sequence current detection system of three-phase power transmission and distribution circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603746 CN202929090U (en) | 2012-11-14 | 2012-11-14 | Real-time load current and zero-sequence current detection system of three-phase power transmission and distribution circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202929090U true CN202929090U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603746 Expired - Fee Related CN202929090U (en) | 2012-11-14 | 2012-11-14 | Real-time load current and zero-sequence current detection system of three-phase power transmission and distribution circuit |
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| Country | Link |
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| CN (1) | CN202929090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914686A (en) * | 2012-11-14 | 2013-02-06 | 天津市翔晟远电力设备实业有限公司 | Detecting system of real-tine load current and zero sequence current of three-phase power transmission and distribution line |
| CN104391170A (en) * | 2014-12-19 | 2015-03-04 | 国家电网公司 | Detection and calculation method for zero-sequence current |
-
2012
- 2012-11-14 CN CN 201220603746 patent/CN202929090U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914686A (en) * | 2012-11-14 | 2013-02-06 | 天津市翔晟远电力设备实业有限公司 | Detecting system of real-tine load current and zero sequence current of three-phase power transmission and distribution line |
| CN104391170A (en) * | 2014-12-19 | 2015-03-04 | 国家电网公司 | Detection and calculation method for zero-sequence current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20171114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |