CN1329339A - High-voltage light-channel split core type current transformer - Google Patents
High-voltage light-channel split core type current transformer Download PDFInfo
- Publication number
- CN1329339A CN1329339A CN 00110539 CN00110539A CN1329339A CN 1329339 A CN1329339 A CN 1329339A CN 00110539 CN00110539 CN 00110539 CN 00110539 A CN00110539 A CN 00110539A CN 1329339 A CN1329339 A CN 1329339A
- Authority
- CN
- China
- Prior art keywords
- current transformer
- voltage
- conversion
- circuit
- optical channel
- 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.)
- Pending
Links
Images
Abstract
The present invention relates to a high-voltage optical pathway split core type current transformer, belonging to a high-voltage feeder line current parameter collecting equipment, the tail end of current transformer is connected with optical pathway tube, the high-voltage measuring end of optical pathway is equipped with high-voltage measuring circuit formed from the I/V conversion, waveform amplification, waveform translation, V/F conversion, modulation and infrared transmitting circuits, and the tail end of the optical pathway tube is equipped with a receiving and output circuit formed from infrared receiving, demodulating, shaping, F/V conversion, low pass filtering, amplification and output circuit. It can implement real-time continuous collection and output of current of high-voltage line below 500 KV, and is high in accuracy, safe and reliable, strong in anti-interference power and convenient for carrying about.
Description
The present invention relates to a kind of high-voltage light-channel split core type current transformer, belong to high voltage feeder current parameter acquisition utensil, be particularly suitable in the mesohigh electric power system accurately continuous measurement in real time the electric current parameters.
In the past to meritorious, reactive power, power factor (PF), when electrical quantitys such as CT, PT are measured, require to obtain in real time, accurately the parameters such as electric current, voltage on institute survey time road, and split core type current transformer is normally adopted in the acquisition of online current parameters.This has been mature technique very in low-voltage power supply system stream, yet in middle and high pressure electric power system to each parameter of line current in real time, accurately measurement but becomes a great problem in the current electric power system, this not only makes electric industry management department can not accurately grasp every electrical quantity in the middle and high pressure electric power system, can't realize scientific management, steal electricity also for simultaneously some illegal producer opportunity is provided, cause the loss of national energy.For these reasons, abroad certain company develops a kind of testing current instrument of 6 kilovolt, and its precision is 1.2---and 5%, however, yet still be powerless to the measurement of high-tension line more than 10 kilovolts; Domestic someone once utilizes at high-pressure side and adopts the A/D conversion to be tested by the infrared test lead that is sent to again.The shortcoming of this kind method of testing is that transfer rate is very low, and precision is relatively poor, and more can not carry out synchronous acquisition with voltage signal, therefore, can only it be applied be subjected to certain limitation as rough single current acquisition.
The object of the present invention is to provide a kind of to current waveform in the high voltage supply system below the 500KV carry out the collection of accurate real-time continuous and output and cooperate also with High-Voltage Testing Technology that it is complementary can measure every parameters of electric power such as active power, reactive factor, CT, PT, stable performance, safe and reliable, antijamming capability strong, use high-voltage light-channel split core type current transformer easy to carry.
The objective of the invention is to realize by the following technical solutions, form by current transformer, the tail end of its current transformer links to each other with the optical channel pipe, the high-tension measurement end of optical channel is provided with the high-voltage measuring circuit that is made of I/V conversion, waveform amplification, waveform translation, V/F conversion, modulation and infrared transtation mission circuit, is provided with the reception output circuit that is made of infrared reception, demodulation, shaping, F/V conversion, low-pass filtering, amplification and output circuit at the end of optical channel.
Described optical channel is any one in vacuum optical channel and the airlight passage.
The present invention compared with prior art, owing to broken through the constraint of traditional high pressure acquisition mode thinking, adopt V/F, the F/V switch technology, and detect proof through relevant department and have in the high voltage supply system pair below the 500KV electric current parameters carry out in real time, continuously, synchronous high-speed is gathered and output, its precision reaches 0.5%, stable performance, safe and reliable antijamming capability is strong, easy to carry, with cooperate with High-Voltage Testing Technology that it is complementary also can be to active power, reactive power, power factor (PF), CT, every parameters of electric power such as PT carries out portable type measuring, has solved the matter of great urgency in this field.
Fig. 1 is a main TV structure schematic diagram of the present invention.
Fig. 2 is the circuit block diagram of high-voltage measuring circuit.
Fig. 3 is the former frame principle figure of circuit that receives output circuit.
Fig. 4 is the circuit theory diagrams of high-voltage measuring circuit.
Fig. 5 is the circuit theory diagrams that receive output circuit.
Enforcement of the present invention is described in detail in conjunction with the accompanying drawings, the tail end of split core type current transformer 1 links to each other with optical channel pipe 4, the high-tension measurement end of optical channel 3 is provided with by I/V to be changed, waveform amplifies, reference voltage, the waveform translation, the V/F conversion, the high-voltage measuring circuit 2 that modulation and infrared emission circuit constitute is provided with by infrared reception at the end of optical channel 3, demodulation, shaping, the F/V conversion, low-pass filtering, amplify the reception output circuit 5 that constitutes with output circuit, pincerlike head is provided with jaw folding backguy 6, described optical channel 3 is vacuum optical channels, still can which kind of determine to use be advisable according to the high pressure range of tested electric power system with the airlight passage.After being encapsulated in the metal screen shell respectively, described high-voltage measuring circuit 2 and reception output circuit 5 reinstall corresponding separately position.
When the present invention used, earlier with on the electric wire in the high voltage supply system of pliers head clip below tested 500KV, the output that receives output circuit 5 linked to each other with secondary meter.The current signal that current transformer 1 collects is converted to corresponding sinusoidal voltage signal through I/V, amplify by waveform, waveform translation circuit is handled, make it become the required voltage signal of V/F change-over circuit, be converted to the correspondent frequency pulse signal by V/F again, after modulating, modulation circuit sends to the infrared receiving circuit that receives in the output circuit 5 by infrared transtation mission circuit, the data-signal of receiving is again after demodulator circuit is reduced to pulse duration frequency signal, by shaping circuit it is handled, make it to become the required undersuing of F/V circuit, be corresponding sinusoidal voltage signal by the F/V circuit conversion again, after low-pass filter circuit filters disturbing wave, amplify by amplifying circuit and to export secondary meter to and can obtain the electrical quantity that to survey.
Claims (2)
1, a kind of high-voltage light-channel split core type current transformer, form by current transformer (1), the tail end that it is characterized in that current transformer (1) links to each other with optical channel pipe (4), the high-tension measurement end of optical channel (3) is provided with the high-voltage measuring circuit (2) that is made of I/V conversion, waveform amplification, waveform translation, V/F conversion, modulation and infrared transtation mission circuit, is provided with the reception output circuit (5) that is made of infrared reception, demodulation, shaping, F/V conversion, low-pass filtering, amplification and output circuit at the end of optical channel (3).
2, current transformer according to claim 1 is characterized in that described optical channel (3) is any one in vacuum optical channel and the airlight passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110539 CN1329339A (en) | 2000-06-15 | 2000-06-15 | High-voltage light-channel split core type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110539 CN1329339A (en) | 2000-06-15 | 2000-06-15 | High-voltage light-channel split core type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1329339A true CN1329339A (en) | 2002-01-02 |
Family
ID=4580527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00110539 Pending CN1329339A (en) | 2000-06-15 | 2000-06-15 | High-voltage light-channel split core type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1329339A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432680C (en) * | 2005-08-24 | 2008-11-12 | 珠海市科荟电器有限公司 | Forcipated mutual-inductor, forcipated ammeter and verification method of forcipated ammeter |
| CN101487859B (en) * | 2008-01-15 | 2013-01-23 | 湖北盛佳电器设备有限公司 | High-voltage direct measurement apparatus |
| CN103630727A (en) * | 2013-10-30 | 2014-03-12 | 合保电气（芜湖）有限公司 | Load checking ammeter |
| CN108181494A (en) * | 2017-12-29 | 2018-06-19 | 浙江航都电子科技有限公司 | A kind of integrated infrared voltage P/T module |
-
2000
- 2000-06-15 CN CN 00110539 patent/CN1329339A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432680C (en) * | 2005-08-24 | 2008-11-12 | 珠海市科荟电器有限公司 | Forcipated mutual-inductor, forcipated ammeter and verification method of forcipated ammeter |
| CN101487859B (en) * | 2008-01-15 | 2013-01-23 | 湖北盛佳电器设备有限公司 | High-voltage direct measurement apparatus |
| CN103630727A (en) * | 2013-10-30 | 2014-03-12 | 合保电气（芜湖）有限公司 | Load checking ammeter |
| CN108181494A (en) * | 2017-12-29 | 2018-06-19 | 浙江航都电子科技有限公司 | A kind of integrated infrared voltage P/T module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202486199U (en) | Data acquisition unit of electronic type mutual inductor | |
| CN101408565A (en) | 35KV power distribution station internal and external over voltage monitoring method based on voltage mutual inductor sample | |
| CN104459483A (en) | 330 kV power cable line partial discharge monitoring method and device | |
| CN204462307U (en) | Based on the cable-transmission line fault section location system of synchronized sampling | |
| CN204855663U (en) | Capacitive insulation of equipment characteristic monitoring system based on bus distributing type | |
| CN112904147B (en) | Power transmission line fault and pre-discharge monitoring device and signal processing method | |
| CN202256590U (en) | Insulation on-line monitoring device for transformer bushing | |
| CN1329339A (en) | High-voltage light-channel split core type current transformer | |
| CN211014435U (en) | Non-contact voltage acquisition device and system | |
| CN2426638Y (en) | High voltage optical pass split core current transformer | |
| CN102928641A (en) | Electronic current transformer | |
| CN201886067U (en) | Online voltage harmonic monitoring system for wind farms | |
| CN207946471U (en) | A kind of ion flow density measurement system | |
| CN216900870U (en) | Fault indicator based on zero sequence voltage starting | |
| CN102095924A (en) | Detection device for power utilization and measurement of high-voltage circuit | |
| CN202676845U (en) | Device for monitoring earth fault of transformer core | |
| CN102288828A (en) | Digital high-voltage multifunctional insulator detection device | |
| CN201041573Y (en) | Photoelectric digital direction middle and high voltage power meter | |
| CN111308201B (en) | Distributed wave recording system integrating small-current grounding line selection function | |
| CN202916326U (en) | Electronic current transformer | |
| CN211147878U (en) | Wireless temperature measuring device for cable connector of switch cabinet | |
| CN107144712A (en) | A kind of intelligent wiring box | |
| CN204116446U (en) | A kind of voltage for high voltage converter and frequency measuring equipment | |
| CN218995637U (en) | Low-voltage leakage fault collecting and transmitting device | |
| CN2197675Y (en) | Phase authorized meter for high voltage and three phase A.C. source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |