CN103900777A - Strut type electronic current transformer one-time vibration detecting device and method - Google Patents
Strut type electronic current transformer one-time vibration detecting device and method Download PDFInfo
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- CN103900777A CN103900777A CN201410145557.4A CN201410145557A CN103900777A CN 103900777 A CN103900777 A CN 103900777A CN 201410145557 A CN201410145557 A CN 201410145557A CN 103900777 A CN103900777 A CN 103900777A
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Abstract
The invention provides a strut type electronic current transformer one-time vibration detecting device which comprises a strut type electronic current transformer and a contact monitoring circuit. The strut type electronic current transformer and the contact monitoring circuit are respectively connected with a breaker. The contact monitoring circuit is connected with an industrial personal computer through a collecting card. The strut type electronic current transformer is connected with the industrial personal computer through a merging unit and a photoelectric converter in sequence. The invention further provides a method based on the detecting device. Opening operation, closing operation and opening-closing-opening operation are carried out on the breaker in sequence, and vibration output verification is carried out on the current transformer according to the industrial personal computer. Compared with the prior art, according to the strut type electronic current transformer one-time vibration detecting device and method, vibration encountered by the electronic current transformed in an intelligent substation can be simulated, therefore, the current transformed is verified, relay protection malfunctions are prevented from being caused by error output of the electronic current transformer, and safe operating of a power grid is guaranteed.
Description
Technical field
The present invention relates to a kind of vibration detection device and method of current transformer, be specifically related to vibration detection device of a kind of column support type electronic current mutual inductor and method.
Background technology
Electronic current mutual inductor is for detection of electric parameter metering in electric system and all kinds of important devices that inputs or outputs frequency conversion electric weight, and the Performance Detection to electric equipments such as motor, frequency converter and special transformers and efficiency evaluation and test provide Reliable guarantee.Generally, electronic current mutual inductor in use may run into a component vibration of two types:
1.: when electric system is short-circuited, the electric power of short-time current causes wire shake and the vibration that causes, vibrated electronic mutual inductor should be able to true(-)running;
2.: switch, i.e. when isolating switch, isolation switch operation, the vibration being caused by switching manipulation, vibrated electronic current mutual inductor should be able to normally be worked.
Compared with traditional mutual inductor, electronic current mutual inductor element is many, large to the sensitivity of vibration.Certain vibration may cause the sensing unit inside of electronic current mutual inductor to occur deformation and relative displacement, thereby causes the variation of measuring accuracy; Serious time, the abnormal output of electronic mutual inductor affected by vibration may cause the malfunction of electric network protection device, thereby threatens the safety of electrical network.
Therefore, providing a kind of can accurately detect the vibration that causes due to isolating switch pick-up unit and the method for the impact of electronic current mutual inductor serviceability are seemed to particularly important.
Summary of the invention
In order to meet the needs of prior art, the invention provides vibration detection device of a kind of column support type electronic current mutual inductor, comprise the column support type electronic current mutual inductor and the contact observation circuit that are connected with isolating switch respectively; Described contact observation circuit is connected with industrial computer by capture card; Described column support type electronic current mutual inductor is connected with described industrial computer with photoelectric commutator by merge cells successively.
Preferably, the logical peraluminous bus bar of described isolating switch is connected with described column support type electronic current mutual inductor; Described isolating switch is to be applied to outdoor spring isolating switch;
Preferably, described contact observation circuit comprises the resistance R 1 and the resistance R 2 that are connected in series with direct supply; Described industrial computer judges the folding condition of described isolating switch by gathering the resistive voltage value of electric shock observation circuit;
Preferably, described direct supply is 5V direct supply; The resistance of described resistance R 1 is 800 Ω; The resistance of described resistance R 2 is 3200 Ω;
Preferably, described capture card is that resolution is at least 16bit, and sampling rate is at least the capture card of 20kHz;
Preferably, second pulse generator is connected with described capture card with described merge cells respectively, for providing merge cells and capture card to carry out the pps pulse per second signal of synchronous acquisition;
Preferably, the voltage data of described contact observation circuit output and the output data of merge cells are carried out time correlation by described industrial computer, and calculate the root-mean-square valve of output data and the peak value of each cycle that detect merge cells in section access time.
A kind of detection method that adopts a vibration detection device of column support type electronic current mutual inductor provided by the invention, comprising:
Step 1: detected parameters is set, comprises rated primary current value, communication protocol type and the signal method of synchronization that described pick-up unit is set;
Step 2: isolating switch carries out sub-switching operation, capture card gathers the magnitude of voltage of resistance R 1 in the observation circuit of contact; Described industrial computer is analyzed according to continuous data, protected data and the described magnitude of voltage of the described column support type electronic current mutual inductor of described merge cells output, thereby judges whether described column support type electronic current mutual inductor meets output requirement;
Step 3: isolating switch carries out closing operation, capture card gathers the magnitude of voltage of described resistance R 1; Described industrial computer is analyzed according to described continuous data, described protected data and described magnitude of voltage, thereby judges whether described column support type electronic current mutual inductor meets output requirement;
Step 4: isolating switch carries out the operation of oco lock successively, and capture card gathers the magnitude of voltage of described resistance R 1; After sub-switching operation for the second time, described industrial computer is analyzed according to described continuous data, described protected data and magnitude of voltage, thereby judges whether described column support type electronic current mutual inductor meets output requirement.
Preferably, described isolating switch carries out respectively five sub-switching operations, five closing operations and five oco lock operations, if in the continuous 10s after separating brake or combined floodgate 5ms, the root-mean-square valve of a cycle is no more than 3% of specified secondary output the last time, output on single point is no more than 10% of specified secondary output, by detecting;
Preferably, described communication protocol type comprises IEC61850-9-1 communication protocol and IEC61850-9-2 communication protocol; The described signal method of synchronization comprises the B code method of synchronization and the PPS method of synchronization.
Compared with immediate prior art, excellent effect of the present invention is:
1, in technical solution of the present invention, adopt contact observation circuit, can accurately killer switch situation be monitored, be located;
2, in technical solution of the present invention, industrial computer not only can be combined the output data of unit and carry out root-mean-square valve calculating, and can calculate the peak value that detects each cycle in access time, can meet the demand that the protective device in electric system protects action to judge according to sampled point;
3, vibration detection device of a kind of column support type electronic current mutual inductor provided by the invention and method, can simulate the reliability of the isolating switch that runs in intelligent substation of examination electronic current mutual inductor under once vibrating;
4, vibration detection device of a kind of column support type electronic current mutual inductor provided by the invention and method, electronic current mutual inductor is carried out to the vibration-testing that cut-offs under primary current condition, the reliability requirement of electronic mutual inductor while having simulated more really on-the-spot isolating switch action;
5, vibration detection device of a kind of column support type electronic current mutual inductor provided by the invention and method, detect, close a floodgate for five times and detect five times and the detection of oco lock by five separating brakes, whether the output that can test accurately column support type electronic current mutual inductor meets output requirement, do not occur in the situation of the faults such as damage, communication disruption, sampling are invalid, packet loss, after last separating brake or combined floodgate 5ms, the root-mean-square valve of interior each cycle of 10s is no more than 3% of specified secondary output continuously, and output on single point is no more than 10% of specified secondary output;
6, vibration detection device of a kind of column support type electronic current mutual inductor provided by the invention and method, examination electronic current mutual inductor that can be perfect is being coupled the reliability under vibration with isolating switch, is an important guarantee of intelligent grid safe operation.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is: vibration detection device structural drawing of a kind of column support type electronic current mutual inductor in the embodiment of the present invention;
Fig. 2 is: observation circuit schematic diagram in contact in the embodiment of the present invention;
Fig. 3 is: in the embodiment of the present invention, isolating switch, mutual inductor have the circuit theory diagrams of current detecting.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
The invention provides an a kind of vibration detection device that is applicable to column support type electronic current mutual inductor, as shown in Figure 1, this pick-up unit comprises column support type electronic current mutual inductor, contact observation circuit, merge cells, capture card, second pulse generator, industrial computer and isolating switch;
Column support type electronic current mutual inductor is connected between isolating switch and merge cells; Contact observation circuit is connected between isolating switch and capture card; Merge cells is connected with industrial computer by photoelectric commutator; Capture card is directly connected with industrial computer; Merge cells is connected with second pulse generator respectively with capture card;
Isolating switch is to be applied to outdoor spring isolating switch, and isolating switch is connected with column support type electronic current mutual inductor by hard conductor, and in the present embodiment, hard conductor is aluminium matter bus bar.
As shown in Figure 2, contact observation circuit comprises the resistance R 1 and the resistance R 2 that are connected in series with direct supply, and the magnitude of voltage of direct supply is 5V, and the resistance of resistance R 1 is 800 Ω, and the resistance of resistance R 2 is 3200 Ω.Contact observation circuit is the circuit of the folding condition of industrial personal computer monitoring isolating switch, is judged opening of isolating switch and is disconnected by the magnitude of voltage of sampling resistor in capture card Acquisition Circuit; Wherein resistance R 1 is sampling resistor, and the structure that adopts resistance R 1 to connect with resistance R 2 realizes circuit 1/4 dividing potential drop, thereby may produce superpotential while preventing breaker closing or separating brake, exceeds the situation of capture card acquisition range;
Isolating switch is by separating brake or the once vibration of simulation of closing a floodgate;
Merge cells merges and synchronizes processing for continuous data and protected data that column support type electronic current mutual inductor is exported, and digital signal after treatment is sent to industrial computer;
Photoelectric commutator converts electric signal to for the light signal that merge cells is exported, thereby industrial computer is processed it;
Second pulse generator is for providing merge cells and capture card to carry out the pps pulse per second signal of signal synchronous transmission;
The function of industrial computer comprises:
1.: the voltage data of synchronous acquisition contact observation circuit output and the output data of merge cells, and above-mentioned data are carried out to time correlation:
2.: calculate the root-mean-square valve of output data and the peak value of each cycle that detect merge cells in section access time, this peak value comprises crest value and trough value;
Wherein, in industrial computer, the number of memory data channel is at least three, and the continuous recording that is combined the output data of unit is at least 10s storage time, and arbitrary the output data that memory data channel all can be stored contact observation circuit and merge cells; The total delay time of the output data acquiring and recording of industrial computer to contact observation circuit and merge cells is less than 500us.
The detection method operation steps of an a kind of vibration detection device that adopts the column support type electronic current mutual inductor in the present embodiment provided by the invention is:
1.: detected parameters is set in industrial computer, comprises rated primary current value, communication protocol type and the signal method of synchronization that pick-up unit B-C post formula electronic current mutual inductor is set; Wherein communication protocol type comprises IEC61850-9-1 communication protocol and IEC61850-9-2 communication protocol; The signal method of synchronization comprises the B code method of synchronization and the PPS method of synchronization, and the PPS method of synchronization is the pulse per second (PPS) method of synchronization;
2.: as shown in Figure 3, isolating switch carries out sub-switching operation, capture card gathers the magnitude of voltage of resistance R 1 in the observation circuit of contact; Industrial computer is analyzed according to the magnitude of voltage of continuous data, protected data and the resistance R 1 of the column support type electronic current mutual inductor of merge cells output, thereby judges whether column support type electronic current mutual inductor meets output requirement;
3.: as shown in Figure 3, isolating switch carries out closing operation, the magnitude of voltage of capture card resistance R 1; Industrial computer is analyzed according to the magnitude of voltage of continuous data, protected data and resistance R 1, thereby judges whether column support type electronic current mutual inductor meets output requirement;
4.: as shown in Figure 3, isolating switch carries out separating brake, combined floodgate and sub-switching operation, the magnitude of voltage of capture card resistance R 1 successively; After sub-switching operation for the second time, industrial computer is analyzed according to the magnitude of voltage of continuous data, protected data and resistance R 1, thereby judges whether column support type electronic current mutual inductor meets output requirement;
Pick-up unit is in the time carrying out above-mentioned detection operation, all can not there is the faults such as the invalid and packet loss of damage, communication disruption, sampling in electronic current mutual inductor, the output of above-mentioned column support type electronic current mutual inductor requires: in the continuous 10s after the last separating brake of isolating switch or closing operation 5ms, the root-mean-square valve of a cycle is no more than 3% of specified secondary output, and output on single point is no more than 10% of specified secondary output.
Finally should be noted that: described embodiment is only some embodiments of the present application, instead of whole embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the application's protection.
Claims (10)
1. vibration detection device of column support type electronic current mutual inductor, is characterized in that, described device comprises the column support type electronic current mutual inductor and the contact observation circuit that are connected with isolating switch respectively; Described contact observation circuit is connected with industrial computer by capture card; Described column support type electronic current mutual inductor is connected with described industrial computer with photoelectric commutator by merge cells successively.
2. vibration detection device of a kind of column support type electronic current mutual inductor as claimed in claim 1, is characterized in that, the logical peraluminous bus bar of described isolating switch is connected with described column support type electronic current mutual inductor; Described isolating switch is to be applied to outdoor spring isolating switch.
3. vibration detection device of a kind of column support type electronic current mutual inductor as claimed in claim 1, is characterized in that, described contact observation circuit comprises the resistance R 1 and the resistance R 2 that are connected in series with direct supply; Described industrial computer judges the folding condition of described isolating switch by gathering the resistive voltage value of electric shock observation circuit.
4. vibration detection device of a kind of column support type electronic current mutual inductor as claimed in claim 3, is characterized in that, described direct supply is 5V direct supply; The resistance of described resistance R 1 is 800 Ω; The resistance of described resistance R 2 is 3200 Ω.
5. vibration detection device of a kind of column support type electronic current mutual inductor as claimed in claim 1, is characterized in that, described capture card is that resolution is at least 16bit, and sampling rate is at least the capture card of 20kHz.
6. vibration detection device of a kind of column support type electronic current mutual inductor as claimed in claim 1, it is characterized in that, second pulse generator is connected with described capture card with described merge cells respectively, for providing merge cells and capture card to carry out the pps pulse per second signal of synchronous acquisition.
7. vibration detection device of a kind of column support type electronic current mutual inductor as claimed in claim 1, it is characterized in that, the voltage data of described contact observation circuit output and the output data of merge cells are carried out time correlation by described industrial computer, and calculate the root-mean-square valve of output data and the peak value of each cycle that detect merge cells in section access time.
8. a detection method for employing pick-up unit as described in claim 1-7, is characterized in that, described method comprises:
Step 1: detected parameters is set, comprises rated primary current value, communication protocol type and the signal method of synchronization that described pick-up unit is set;
Step 2: isolating switch carries out sub-switching operation, capture card gathers the magnitude of voltage of resistance R 1 in the observation circuit of contact; Described industrial computer is analyzed according to continuous data, protected data and the described magnitude of voltage of the described column support type electronic current mutual inductor of described merge cells output, thereby judges whether described column support type electronic current mutual inductor meets output requirement;
Step 3: isolating switch carries out closing operation, capture card gathers the magnitude of voltage of described resistance R 1; Described industrial computer is analyzed according to described continuous data, described protected data and described magnitude of voltage, thereby judges whether described column support type electronic current mutual inductor meets output requirement;
Step 4: isolating switch carries out the operation of oco lock successively, and capture card gathers the magnitude of voltage of described resistance R 1; After sub-switching operation for the second time, described industrial computer is analyzed according to described continuous data, described protected data and magnitude of voltage, thereby judges whether described column support type electronic current mutual inductor meets output requirement.
9. detection method as claimed in claim 8, it is characterized in that, described isolating switch carries out respectively five sub-switching operations, five closing operations and five oco lock operations, if in the continuous 10s after separating brake or combined floodgate 5ms, the root-mean-square valve of a cycle is no more than 3% of specified secondary output the last time, output on single point is no more than 10% of specified secondary output, by detecting.
10. detection method as claimed in claim 8, is characterized in that, described communication protocol type comprises IEC61850-9-1 communication protocol and IEC61850-9-2 communication protocol; The described signal method of synchronization comprises the B code method of synchronization and the PPS method of synchronization.
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| CN201410145557.4A CN103900777B (en) | 2014-04-11 | 2014-04-11 | A kind of vibration detection device of column support type electronic current mutual inductor and method |
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| CN201410145557.4A CN103900777B (en) | 2014-04-11 | 2014-04-11 | A kind of vibration detection device of column support type electronic current mutual inductor and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547620A (en) * | 2015-12-09 | 2016-05-04 | 中国西电电气股份有限公司 | Vibration testing device and method for primary part of electronic current transformer |
| CN106813884A (en) * | 2015-12-01 | 2017-06-09 | 中国电力科学研究院 | A kind of extra-high voltage all-fiber current transformator vibration testing device and its test method |
| CN108088637A (en) * | 2017-12-19 | 2018-05-29 | 国网重庆市电力公司电力科学研究院 | A kind of vibration test system of electronic mutual inductor |
| CN113702892A (en) * | 2021-08-27 | 2021-11-26 | 国网江苏省电力有限公司营销服务中心 | Continuous vibration test device for electronic current transformer and use method of continuous vibration test device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001201519A (en) * | 2000-01-17 | 2001-07-27 | Meidensha Corp | Testing device and test method of current measuring circuit |
| CN202486304U (en) * | 2011-11-08 | 2012-10-10 | 国网电力科学研究院 | High voltage current transformer on-line verifying device |
| CN102928186A (en) * | 2012-11-16 | 2013-02-13 | 哈尔滨工业大学 | Testing method for vibration performance of electronic transducer |
| CN103439681A (en) * | 2013-07-31 | 2013-12-11 | 国家电网公司 | Electronic current transformer short-time current vibration test device and method thereof |
| CN103439072A (en) * | 2013-07-31 | 2013-12-11 | 国家电网公司 | electronic current transformer one-time coupling vibration test device and method thereof |
-
2014
- 2014-04-11 CN CN201410145557.4A patent/CN103900777B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001201519A (en) * | 2000-01-17 | 2001-07-27 | Meidensha Corp | Testing device and test method of current measuring circuit |
| CN202486304U (en) * | 2011-11-08 | 2012-10-10 | 国网电力科学研究院 | High voltage current transformer on-line verifying device |
| CN102928186A (en) * | 2012-11-16 | 2013-02-13 | 哈尔滨工业大学 | Testing method for vibration performance of electronic transducer |
| CN103439681A (en) * | 2013-07-31 | 2013-12-11 | 国家电网公司 | Electronic current transformer short-time current vibration test device and method thereof |
| CN103439072A (en) * | 2013-07-31 | 2013-12-11 | 国家电网公司 | electronic current transformer one-time coupling vibration test device and method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李刚等: "一种智能变电站断路器状态监测方案", 《电力系统保护与控制》, vol. 38, no. 14, 16 July 2010 (2010-07-16), pages 140 - 143 * |
| 胡蓓等: "电子式电流互感器振动试验方法研究", 《电测与仪表》, vol. 50, no. 8, 31 August 2013 (2013-08-31), pages 62 - 67 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813884A (en) * | 2015-12-01 | 2017-06-09 | 中国电力科学研究院 | A kind of extra-high voltage all-fiber current transformator vibration testing device and its test method |
| CN105547620A (en) * | 2015-12-09 | 2016-05-04 | 中国西电电气股份有限公司 | Vibration testing device and method for primary part of electronic current transformer |
| CN105547620B (en) * | 2015-12-09 | 2019-03-29 | 中国西电电气股份有限公司 | A kind of component vibration experimental rig of electronic current mutual inductor and method |
| CN108088637A (en) * | 2017-12-19 | 2018-05-29 | 国网重庆市电力公司电力科学研究院 | A kind of vibration test system of electronic mutual inductor |
| CN113702892A (en) * | 2021-08-27 | 2021-11-26 | 国网江苏省电力有限公司营销服务中心 | Continuous vibration test device for electronic current transformer and use method of continuous vibration test device |
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