CN201945634U - Phase sequence post with signal output function - Google Patents
Phase sequence post with signal output function Download PDFInfo
- Publication number
- CN201945634U CN201945634U CN2010205151611U CN201020515161U CN201945634U CN 201945634 U CN201945634 U CN 201945634U CN 2010205151611 U CN2010205151611 U CN 2010205151611U CN 201020515161 U CN201020515161 U CN 201020515161U CN 201945634 U CN201945634 U CN 201945634U
- Authority
- CN
- China
- Prior art keywords
- phase sequence
- interface
- result output
- signal
- signal output
- 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
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
A phase sequence post with signal output function belongs to the field of measurement. The phase sequence post comprises a measuring result output end of a detection circuit arranged in the casing of a phase sequence measuring device, a photoelectric signal conversion/isolation module is arranged at the measuring result output end of the detection circuit, a measuring result output interface is arranged on the casing of the phase sequence measuring device, the signal input end of the photoelectric signal conversion/isolation module is correspondingly connected with the measuring result output end of the detection circuit, and the signal output end of the photoelectric signal conversion/isolation module is correspondingly connected with the measuring result output interface. The phase sequence post can realize teletransmission of measuring results and enable present measuring results of phase sequence to be directly received at a centralized control room in a different place. The whole device is simple in structure, has strong anti-interference capability and reliable and stable signal output function, thereby being favorable for increasing degree of automatic control of a whole power network. The phase sequence post can be widely used in the field of detection/monitoring to judge whether voltage wiring is abnormal in power transformation and distribution system.
Description
Technical field
The utility model belongs to the measurement mechanism field, relates in particular to a kind of three-phase supply operating loop that is used for, and can carry out the proving installation of phase sequence and phase shortage identification to voltage wiring abnormal conditions.
Background technology
Phase sequence is exactly the order of phase place, be the instantaneous value of alternating current from negative value on the occasion of the order successively that changes through null value.
In three-phase power supply system, if the phase sequence that power supply inserts makes a mistake, modal fault is the opposite direction running (rotation direction that is motor changes) that causes motor for low-voltage-powered system (380V); Then obviously cause electricity to reduce for the three phase metering loop.
Equally, phase shortage takes place in three-phase supply when normal operation, will produce motor circuit and overheatedly slow down with rotating speed, seriously can damage motor; Phase shortage, the minimizing that also can cause measuring electricity, very important.
In other words, the phase sequence when the following three-phase supply of on-line monitoring 0.4KV moves mainly is in order to ensure the operate as normal of equipment/devices such as motor and the accurate operation of measurement loop, and the assurance charging is not subjected to or suffers a loss less.
So; the on-line monitoring that voltage phase sequence is unusual; it is one of big event of electric power transformation and distribution system; it is unusual or phase shortage is unusual that it can in time find various phase sequences in 0.4KV ring network power supply loop and the three phase metering loop; for the personnel of patrolling and examining provide effective monitoring means; can improve processing speed, reduce the unsafe conditions that causes because of electric voltage exception, reduce gauging loss.
In like manner, in high pressure or ultrahigh voltage power system, the unusual on-line monitoring of voltage phase sequence is strengthened in PT (voltage transformer (VT)) secondary measurement loop, also seemed especially important.
Existing phase sequence detection/monitoring device or instrument, the common mode that adopts measurement result to show on the spot, such as the applying date be on February 11st, 2010, application number is in 201010109505.3 the disclosed technical scheme of Chinese invention patent application " a kind of phasing tester ", adopt this digital or pointer measurement result demonstration of on the body of phase sequence recognition device, directly carrying out exactly, though the demonstration of its measurement result is direct, clear, but only be suitable for single phase sequence detection apparatus or instrument, measured result can't be carried out the signal is far passed.
In addition; along with improving constantly of electric power system control automaticity; the abnormal conditions that can remotely detect/monitor three-phase voltage wiring in on-the-spot ring network power supply or the measurement loop in the centralized control room of power network just become and very have been necessary; for the higher power transmission and distribution system of some automaticity; in the centralized control room in strange land, can be non-at-scene ground, long-rangely directly obtain on-the-spot phase sequence detection/monitoring result and become the necessary condition of finishing normal power transmission and distribution operation or protective relaying device bringing normally into operation.
The utility model content
Technical problem to be solved in the utility model provides a kind of phase sequence with signal output function and pastes, it can realize the teletransmission of measurement result, make that directly obtaining on-the-spot phase sequence monitoring result in the centralized control room in strange land becomes possibility, and whole apparatus structure is succinct, interference free performance is stronger, the signal output function is reliable and stable, helps to improve the automatic controlling level of whole power network.
The technical solution of the utility model is: provide a kind of phase sequence with signal output function to paste, the measurement result output terminal that comprises the testing circuit that is positioned at phase sequence measurement mechanism housing, it is characterized in that: the measurement result output terminal at testing circuit is provided with photosignal conversion/isolation module; On the housing of phase sequence measurement mechanism, the measurement result output interface is set; The signal input part of described photosignal conversion/isolation module is with the corresponding connection of measurement result output terminal of testing circuit; The signal output part of described photosignal conversion/isolation module is with the corresponding connection of measurement result output interface on the housing that is arranged on the phase sequence measurement mechanism.
Further, described measurement result output interface is through signal transmission network or control signal system, with the corresponding connection of control device, protective relaying device, Centralized Monitoring operating means or supervisory control comuter in far-end or strange land.
Described photosignal conversion/isolation module is opto-electronic conversion/buffer circuit or optically coupled circuit.
Concrete, described measurement result output interface is optical fiber interface, conventional netting twine interface, telephone line interface, computer serial communication interface or hard contact output.
Described optical fiber interface comprises FC, SC, ST, LC, MU or MTRJ optical fiber interface; Described conventional netting twine interface comprises RJ-45 or BNC netting twine interface, and described telephone line interface comprises the RJ11 interface; Described computer serial communication interface comprises RS-232, RS-485, DB-9, SATA or USB interface; Described hard contact point signal output comprise be applicable to 220V/110V/24V at least one pair of or several to hard contact.
Described signal transmission network or control signal system comprise the signal wire/wireless transmission dedicated network of local secondary control system, control signal transmission network or transformer and distribution station this locality of wired/WLAN (wireless local area network), wire/wireless ethernet wan, electric power system dispatching private network, electric system, transformer and distribution station.
Compared with the prior art, the utility model has the advantages that:
1. at the output terminal of measurement result, light-to-current inversion/isolation module is set, has realized the teletransmission of phase sequence detection/monitor signal on the spot, interference free performance is stronger, helps improving the automatic controlling level of transformation and distribution system;
2. adopt the mode signal output of light-to-current inversion/isolation module, can easily the phase sequence testing result be carried out teletransmission first, second can solve isolation and Insulation Problems between the different electric pressures reliably;
3. signal output part adopts the interface connected mode, and grafting/dismounting is convenient, and whole apparatus structure is succinct, and signal output is reliable and stable.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a circuit function module diagram of the present utility model;
Fig. 3 is the wiring diagram of light-to-current inversion/isolation module.
1 is testing circuit among the figure, and 2 is photosignal conversion/isolation module, and 3 is the housing of phase sequence measurement mechanism, and 4 is the measurement result output interface.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Among Fig. 1, the technical solution of the utility model is the measurement result output terminal at testing circuit 1, is provided with a photosignal conversion/isolation module 2; On the housing 3 of phase sequence measurement mechanism, be provided with a measurement result output interface 4.
The signal input part of its photosignal conversion/isolation module, the corresponding connection of measurement result output terminal with testing circuit, the signal output part of photosignal conversion/isolation module is with the corresponding connection of measurement result output interface on the housing that is arranged on the phase sequence measurement mechanism.
Compared with prior art, the technical program is provided with light-to-current inversion/isolation module at the output terminal of measurement result, has realized the teletransmission of phase sequence detection/monitor signal on the spot, helps improving the automatic controlling level of transformation and distribution system.
Why the technical program selects the mode signal output of light-to-current inversion/isolation module for use, be easily the phase sequence testing result to be carried out teletransmission on the one hand, adopt this way of output on the other hand, can solve isolation and Insulation Problems between the different electric pressures reliably.
In addition, signal output part adopts the interface connected mode, and grafting/dismounting is convenient, and whole apparatus structure is succinct, and signal output is reliable and stable.
Among Fig. 2, on circuit topological structure, the technical program is provided with a photosignal conversion/isolation module at the measurement result output terminal of testing circuit, and (not shown) on the housing of phase sequence measurement mechanism is provided with a measurement result output interface.
Wherein the signal input part INPUT of photosignal conversion/isolation module holds corresponding connection respectively with the measurement result output terminal OUT-COM of testing circuit; The signal output part OUTPUT of photosignal conversion/isolation module is with each terminals corresponding connection respectively of measurement result output interface on the housing that is arranged on the phase sequence measurement mechanism.
Concrete, above-mentioned photosignal conversion/isolation module is opto-electronic conversion/buffer circuit or optically coupled circuit.
Above-mentioned measurement result output interface is optical fiber interface, conventional netting twine interface, telephone line interface, computer serial communication interface or hard contact output.
More specifically, its optical fiber interface can be selected the optical fiber interface of FC, SC, ST, LC, MU or MTRJ interface shape for use; Its conventional netting twine interface can be RJ-45 or BNC netting twine interface, optional RJ11 interface when adopting telephone line interface; Adopt the computer serial communication interface to select RS-232, RS-485, DB-9, SATA or USB interface constantly for use; If adopt hard contact point signal output form, then can transmit the feeder number of signal according to operating voltage and needs, select for use be applicable to 220V/110V/24V at least one pair of or several to hard contact.
Signal transmission network or control signal system comprise the signal wire/wireless transmission dedicated network of local secondary control system, control signal transmission network or transformer and distribution station this locality of wired/WLAN (wireless local area network), wire/wireless ethernet wan, electric power system dispatching private network, electric system, transformer and distribution station.
Adopt after the foregoing circuit structure; the phase sequence measurement result of this phase sequence detection apparatus; just can make things convenient for/safely by the measurement result output interface; through signal transmission network or control signal system, with the corresponding connection of control device, protective relaying device, Centralized Monitoring operating means or supervisory control comuter in far-end or strange land.
Among Fig. 3, provided a concrete circuit of implementing of photosignal conversion/isolation module, wherein, the measurement result output terminal OUT-COM end of testing circuit 1, signal input part 1 and 2 corresponding connections of difference with opto-electronic conversion/buffer circuit or optically coupled circuit 2, the signal output part 4 and 3 of opto-electronic conversion/buffer circuit or optically coupled circuit is distinguished corresponding connection with the green-blue terminals of measurement result output interface 4 respectively.
Photoelectrical coupler is to be a kind of electrical-optical-power conversion device of media transmission electric signal with light.It is made up of light emitting source D and light-receiving device Q two parts.Light emitting source and light-receiving device are assembled in the same airtight housing, isolate with transparent insulator to each other.The pin of light emitting source is an input end, and the pin of light-receiving device is an output terminal, and common light emitting source is a light emitting diode, and light-receiving device is photodiode, phototriode or the like.
The kind of photoelectrical coupler is more, and common have photodiode type, phototriode cast, photoresistance type, photo thyristor type, photoelectricity Darlington type, an integrated circuit type etc.
Adding electric signal at the photoelectrical coupler input end makes light emitting source luminous, light intensity depends on the size of exciting current, after this illumination is mapped on the light-receiving device that is packaged together, because of photoelectric effect has produced photocurrent, draw by the light-receiving device output terminal, so just realized the conversion of electrical-optical-electricity.
Because the commercially available prod of opto-electronic conversion/buffer circuit or optically coupled circuit (being commonly called as optocoupler) is a lot, the most frequently used have models such as TLP521 or PC817, if because the requirement of the output characteristics of testing circuit or back one-level far-end control/supervising device are to due to the needs of input signal characteristics, necessarily require the linear simulating signal of this device output, then can select the linear light idol for use, for example the product of HCNR200/201 series.
For opto-electronic conversion/buffer circuit or optically coupled circuit, as long as the rated operational voltage/working current of I/O end can satisfy the needs that use, no specific (special) requirements.
Adopt opto-electronic conversion/buffer circuit or optically coupled circuit to also have an advantage, promptly in the process of signal transmission, its interference free performance is stronger, not disturbed by the electromagnetic signal of surrounding environment usually, just in time is suitable for the complicated transformer and distribution station of electromagnetic interference (EMI).
All the other are with Fig. 1 or Fig. 2.
The utility model can be widely used in detection/monitoring field of judging in the transformation and distribution system that the voltage wiring is whether unusual.
Claims (6)
1. the phase sequence with signal output function is pasted, and comprises the measurement result output terminal of the testing circuit that is positioned at phase sequence measurement mechanism housing, it is characterized in that:
Measurement result output terminal at testing circuit is provided with photosignal conversion/isolation module;
On the housing of phase sequence measurement mechanism, the measurement result output interface is set;
The signal input part of described photosignal conversion/isolation module is with the corresponding connection of measurement result output terminal of testing circuit;
The signal output part of described photosignal conversion/isolation module is with the corresponding connection of measurement result output interface on the housing that is arranged on the phase sequence measurement mechanism.
2. paste according to the described phase sequence of claim 1 with signal output function; it is characterized in that described measurement result output interface; through signal transmission network or control signal system, with the corresponding connection of control device, protective relaying device, Centralized Monitoring operating means or supervisory control comuter in far-end or strange land.
3. paste according to the described phase sequence of claim 1, it is characterized in that described photosignal conversion/isolation module is opto-electronic conversion/buffer circuit or optically coupled circuit with signal output function.
4. paste according to the described phase sequence of claim 1, it is characterized in that described measurement result output interface is optical fiber interface, conventional netting twine interface, telephone line interface, computer serial communication interface or hard contact output with signal output function.
5. paste according to the described phase sequence of claim 4, it is characterized in that described optical fiber interface comprises FC, SC, ST, LC, MU or MTRJ optical fiber interface with signal output function; Described conventional netting twine interface comprises RJ-45 or BNC netting twine interface, and described telephone line interface comprises the RJ11 interface; Described computer serial communication interface comprises RS-232, RS-485, DB-9, SATA or USB interface; Described hard contact point signal output comprises and is applicable to that 220V/110V/24V's is a pair of or several to hard contact.
6. paste according to the described phase sequence of claim 1, it is characterized in that described signal transmission network or control signal system comprise the signal wire/wireless transmission dedicated network of local secondary control system, control signal transmission network or transformer and distribution station this locality of wired/WLAN (wireless local area network), wire/wireless ethernet wan, electric power system dispatching private network, electric system, transformer and distribution station with signal output function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205151611U CN201945634U (en) | 2010-08-31 | 2010-08-31 | Phase sequence post with signal output function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205151611U CN201945634U (en) | 2010-08-31 | 2010-08-31 | Phase sequence post with signal output function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945634U true CN201945634U (en) | 2011-08-24 |
Family
ID=44472974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205151611U Expired - Fee Related CN201945634U (en) | 2010-08-31 | 2010-08-31 | Phase sequence post with signal output function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945634U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955078A (en) * | 2012-10-25 | 2013-03-06 | 湖州电力局 | Novel alternating-current nuclear phase circuit |
| CN105044512A (en) * | 2015-07-23 | 2015-11-11 | 平高集团有限公司 | Substation ground potential automatic detection system |
| CN108767815A (en) * | 2018-07-17 | 2018-11-06 | 云南电网有限责任公司红河供电局 | Electromagnetic potential transformer auto by pass harmonic elimination apparatus |
-
2010
- 2010-08-31 CN CN2010205151611U patent/CN201945634U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955078A (en) * | 2012-10-25 | 2013-03-06 | 湖州电力局 | Novel alternating-current nuclear phase circuit |
| CN105044512A (en) * | 2015-07-23 | 2015-11-11 | 平高集团有限公司 | Substation ground potential automatic detection system |
| CN108767815A (en) * | 2018-07-17 | 2018-11-06 | 云南电网有限责任公司红河供电局 | Electromagnetic potential transformer auto by pass harmonic elimination apparatus |
| CN108767815B (en) * | 2018-07-17 | 2024-02-02 | 云南电网有限责任公司红河供电局 | Automatic bypass resonance elimination device of electromagnetic voltage transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102411119B (en) | Intelligent monitoring device for temperature and insulation state of 330KV high-voltage cable in hydropower station | |
| CN202940831U (en) | Multifunctional broadband tester | |
| CN103293407B (en) | A kind of charging equipment of electric automobile portable test arrangement | |
| CN103809043A (en) | Detection discrimination method of arc light fault | |
| CN103066696A (en) | Monitoring system of photovoltaic power generation unit | |
| CN103197216A (en) | Cable joint partial discharge monitoring system based on optical fiber transmission | |
| CN102891533B (en) | A kind of 800kV intelligent breaker | |
| CN201945634U (en) | Phase sequence post with signal output function | |
| CN103267918B (en) | A kind of remote debugging system of site mount type protective relaying device and method | |
| CN201107631Y (en) | Transformer on-line monitoring device based on fiber optic sensor technology | |
| CN202066926U (en) | Optical fiber sensor technology based on-line parameter monitoring system for capacitor of electric power system | |
| CN204154888U (en) | A kind of all-fiber current transformator sensing ring device for detecting performance | |
| CN201909807U (en) | On-line direct-current measuring device for transformer neutral point | |
| CN103607239A (en) | Simple optical fiber tester | |
| CN201269789Y (en) | Electric system switch cabinet parameter on-line monitoring apparatus based on optical fiber sensor technique | |
| CN203251140U (en) | Monitoring system of photovoltaic power generation unit | |
| CN202393866U (en) | Hydropower station 330kV high voltage cable temperature and insulating state intelligent monitoring device | |
| CN217424710U (en) | Optical cable remote monitoring device at tail end of power optical transmission network | |
| CN203148462U (en) | Multifunctional video monitoring cable tester | |
| CN210039082U (en) | Intelligent electricity utilization safety detection equipment based on EnOcean communication technology | |
| CN210572522U (en) | Photovoltaic system direct current line loss testing device and photovoltaic system direct current line loss testing system | |
| CN204166079U (en) | Secondary loop of breaker wiring testing device | |
| CN208283483U (en) | A kind of charging gun test device and test macro | |
| CN202503297U (en) | Dynamic reactive power compensation device | |
| CN203981839U (en) | Vacuum circuit breaker electrical endurance pick-up unit based on Internet of Things |
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: 20110824 Termination date: 20150831 |
|
| EXPY | Termination of patent right or utility model |