CN103076545B - The charged linear measure longimetry of high-tension cable and Partial Discharge Detection location simulation system - Google Patents
The charged linear measure longimetry of high-tension cable and Partial Discharge Detection location simulation system Download PDFInfo
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Abstract
The charged linear measure longimetry analogue system of a kind of high-tension cable, comprising: Hi-pot test cable, the first coupling mechanism, the second coupling mechanism and the 3rd coupling mechanism, impulses injection module, signal measurement module, synchronization signal detection module; Signal measurement module produces trigger pulse and transfers to impulses injection module, after impulses injection module receives trigger pulse, output encoder pulse is back to described synchronization signal detection module and receives, trigger pulse, coded pulse waveform on a timeline described in synchronization signal detection module record, and according to moment corresponding to waveform and pulse propagation velocity, charged linear measure longimetry is carried out to Hi-pot test cable.A kind of high-tension cable charged Partial Discharge Detection location simulation system is also provided in addition, technology of the present invention, simulate the charged measurement of length process of high-tension cable and Partial Discharge Detection position fixing process, emulation cost is low, efficiency is high, may be used in various experiment porch and training system, be suitable for popularity and use.
Description
Technical field
The present invention relates to Simulating technique in Electric Power System, particularly relate to the charged linear measure longimetry of a kind of high-tension cable and Partial Discharge Detection location simulation system.
Background technology
At present, the charged linear measure longimetry of high-tension cable and Partial Discharge Detection location technology have obtained and have applied more and more widely.For the ease of promoting and utilizing the charged linear measure longimetry of high-tension cable and Partial Discharge Detection location technology, in the middle of various experiment porch and training system, also need to add the charged linear measure longimetry of high-tension cable and Partial Discharge Detection location project.
At present, in the analogue system of electric system, be generally adopt the practical operation charged linear measure longimetry of pattern simulation high-tension cable and Partial Discharge Detection location technology to carry out various experiment and training.In this technology, in charged situation, cable length measure and local put a detection exist huge potential safety hazard, needs site facility huge, general place cannot meet the demands, and adopt the emulation mode of actual physical device, emulation cost is high, efficiency is low, is difficult to popularity application.
Summary of the invention
Based on this, be necessary, for high, the inefficient problem of emulation cost, to provide a kind of high-tension cable charged linear measure longimetry analogue system.
The charged linear measure longimetry analogue system of a kind of high-tension cable, comprising: Hi-pot test cable, the first coupling mechanism, the second coupling mechanism and the 3rd coupling mechanism, impulses injection module, signal measurement module, synchronization signal detection module;
Described signal measurement module, synchronization signal detection module connect the first end points of described Hi-pot test cable respectively by described first coupling mechanism, the 3rd coupling mechanism;
Described impulses injection module connects the second end points of described Hi-pot test cable by described second high-frequency coupler;
Described signal measurement module produces trigger pulse and transfers to described impulses injection module, after described impulses injection module receives described trigger pulse, output encoder pulse is back to described synchronization signal detection module and receives, trigger pulse, coded pulse waveform on a timeline described in described synchronization signal detection module record, and according to moment corresponding to described waveform and pulse propagation velocity, charged linear measure longimetry is carried out to described Hi-pot test cable.
The charged linear measure longimetry analogue system of above-mentioned high-tension cable, by producing trigger pulse in Hi-pot test cable one end, trigger the pulse of other end output encoder and be back to triggering generation end, utilize the trigger pulse, the coded pulse waveform on a timeline that detect, realize carrying out charged linear measure longimetry to Hi-pot test cable, simulate the charged measurement of length process of high-tension cable, emulation cost is low, efficiency is high, may be used in various experiment porch and training system, be suitable for popularity and use.
In addition, there is a need to provide a kind of high-tension cable charged Partial Discharge Detection location simulation system.
A kind of high-tension cable charged Partial Discharge Detection location simulation system, comprising: the Hi-pot test cable being provided with defect point, the first coupling mechanism, the second coupling mechanism and the 3rd coupling mechanism, impulses injection module, signal measurement module, synchronization signal detection module;
Described signal measurement module, synchronization signal detection module connect the first end points of described Hi-pot test cable respectively by described first coupling mechanism, the 3rd coupling mechanism;
Described impulses injection module connects the second end points of described Hi-pot test cable by described second high-frequency coupler;
Described signal measurement module produces excitation pulse and transfers to described defect point, the partial discharge pulse propagated respectively to the first end points and the second end points is produced at described defect point place, after described impulses injection module receives described partial discharge pulse, output encoder pulse is back to described synchronization signal detection module and receives, partial discharge pulse, coded pulse waveform on a timeline described in described synchronization signal detection module record, and according to moment corresponding to described waveform and pulse propagation velocity, charged Partial Discharge Detection location is carried out to described Hi-pot test cable.
Above-mentioned high-tension cable charged Partial Discharge Detection location simulation system, by producing excitation pulse in Hi-pot test cable one end, the partial discharge pulse propagated respectively to two ends is produced at defect point place, one tunnel partial discharge pulse is directly transmitted to excitation pulse and produces end, another road partial discharge pulse triggers output encoder pulse at the other end and is back to triggering generation end, utilize the two-way partial discharge pulse waveform on a timeline detected, realize the charged Partial Discharge Detection location of high-tension cable, simulate the charged Partial Discharge Detection position fixing process of high-tension cable, emulation cost is low, efficiency is high, may be used in various experiment porch and training system, be suitable for popularity to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the charged linear measure longimetry analogue system of high-tension cable of an embodiment;
Fig. 2 is the connection diagram of the Hi-pot test cable in an embodiment;
Fig. 3 is the structural representation of the high-tension cable charged Partial Discharge Detection location simulation system of an embodiment;
Fig. 4 is the connection diagram of the Hi-pot test cable in an embodiment.
Embodiment
Be described in detail below in conjunction with the embodiment of accompanying drawing to the charged linear measure longimetry analogue system of high-tension cable of the present invention.
Fig. 1 shows the structural representation of the charged linear measure longimetry analogue system of high-tension cable of an embodiment, mainly comprise: Hi-pot test cable, the first coupling mechanism, the second coupling mechanism and the 3rd coupling mechanism, impulses injection module, signal measurement module, synchronization signal detection module.
Wherein, signal measurement module, synchronization signal detection module are connected to the first end points of Hi-pot test cable respectively by the first coupling mechanism, the 3rd coupling mechanism, and impulses injection module is connected to the second end points of Hi-pot test cable by the second high-frequency coupler.First coupling mechanism, the second coupling mechanism are high-frequency coupler, and the 3rd coupling mechanism is electromagnetic coupler.
Its specific works principle is as follows:
Described signal measurement module produces a trigger pulse, this trigger pulse is coupled to the first end points of Hi-pot test cable by the first coupling mechanism, this trigger pulse is received by synchronization signal detection module by the 3rd coupling mechanism, and record its waveform, transfer to the second end points by the core of Hi-pot test cable, be coupled to impulses injection module by the second coupling mechanism.
After impulses injection module receives this trigger pulse, produce a coded pulse, preferably, this coded pulse comprises three codings, the coded pulse produced is coupled to Hi-pot test cable by the second coupling mechanism, be back to the first end points by the core of Hi-pot test cable again, synchronization signal detection module is received by the 3rd coupling mechanism, and wave recording.
Synchronization signal detection module records trigger pulse and coded pulse waveform on a timeline, synchronization signal detection module can adopt magnetic field measurement instrument, utilizes electromagnetic coupled principle, when having pulse current to pass through in the 3rd coupling mechanism, lock the electromagnetic field that this electric current produces, record waveform correlation.
After record waveform correlation, synchronization signal detection module carries out charged linear measure longimetry according to the moment corresponding to waveform of record and the velocity of propagation of pulse in Hi-pot test cable to Hi-pot test cable again.
Particularly, the process of measurement can represent with following formula:
In formula, L is the length of high-tension cable, t
1for the moment that trigger pulse waveform negative edge is on a timeline corresponding, t
2for the moment that coded pulse waveform beginning is on a timeline corresponding, T is for impulses injection module is from the time (as 10us) received spent by described trigger pulse to output encoder pulse, and v is the velocity of propagation of pulse in high-tension cable.
In one embodiment, the charged linear measure longimetry analogue system of high-tension cable also comprises repeated test control module, produces repeatedly trigger pulse for controlling described signal measurement module.
Particularly, produce repeatedly trigger pulse by controlling described signal measurement module, repeatedly test, synchronization signal detection module can calculate multiple result, thus can obtain a cable length value more accurately.
For Hi-pot test cable, as shown in Figure 2, the concentric cable (as 50 Ω concentric cable) of some sections of certain lengths can be comprised, each section of concentric cable can pass through cable splice (as BNC connector) and be connected in series, thus the simulated measurement of multiple length can be carried out, the site environment of various complexity can be emulated.
Be described in detail below in conjunction with the embodiment of accompanying drawing to high-tension cable of the present invention charged Partial Discharge Detection location simulation system.
Fig. 3 shows the structural representation of the high-tension cable charged Partial Discharge Detection location simulation system of an embodiment, mainly comprise: the Hi-pot test cable being provided with defect point, first coupling mechanism, the second coupling mechanism and the 3rd coupling mechanism, impulses injection module, signal measurement module, synchronization signal detection module.
Wherein, signal measurement module, synchronization signal detection module are connected to the first end points of Hi-pot test cable respectively by the first coupling mechanism, the 3rd coupling mechanism, and impulses injection module is connected to the second end points of Hi-pot test cable by the second high-frequency coupler.First coupling mechanism, the second coupling mechanism are high-frequency coupler, and the 3rd coupling mechanism is electromagnetic coupler.
Its specific works principle is as follows:
Signal measurement module produces an excitation pulse, is coupled to the first end points by the first coupling mechanism, transfers to defect point by the core of Hi-pot test cable, and excitation pulse produces the partial discharge pulse propagated respectively to the first end points and the second end points at defect point place.
The partial discharge pulse propagated to the first end points is received by synchronization signal detection module by the 3rd coupling mechanism, and records its waveform.
The partial discharge pulse propagated to the second end points is received by the built-in detection circuit for partial discharge of the second coupling mechanism by impulses injection module, after impulses injection module receives this partial discharge pulse, produce a coded pulse, preferably, this coded pulse comprises three codings, it can be the coded pulse of 500V, the coded pulse produced is coupled to Hi-pot test cable by the second coupling mechanism, the first end points is back to again by the core of Hi-pot test cable, synchronization signal detection module is received by the 3rd coupling mechanism, and wave recording.
Synchronization signal detection module records partial discharge pulse and coded pulse waveform on a timeline, synchronization signal detection module can adopt magnetic field measurement instrument, utilizes electromagnetic coupled principle, when having pulse current to pass through in the 3rd coupling mechanism, lock the electromagnetic field that this electric current produces, record waveform correlation.
After record waveform correlation, synchronization signal detection module carries out charged Partial Discharge Detection location according to the moment corresponding to waveform of record and the velocity of propagation of pulse in Hi-pot test cable to Hi-pot test cable again.
Particularly, the process of location can represent with following formula:
In formula, x is the shelf depreciation o'clock distance from the first end points, and L is the length of high-tension cable, t
1for the moment that partial discharge pulse's waveform is on a timeline corresponding, t
2for the moment that coded pulse waveform is on a timeline corresponding, T is for impulses injection module is from the time (as 10us) received spent by described partial discharge pulse to output encoder pulse, and v is the velocity of propagation of pulse in high-tension cable.
In one embodiment, high-tension cable charged Partial Discharge Detection location simulation system also comprises: data report module, for the positioning result of described charged Partial Discharge Detection location simulation is carried out visual presentation.
Particularly, can by the sectional drawing of shelf depreciation collection of illustrative plates and cable local discharge o'clock a virtual enterprising line flicker display of transformer station's high-tension cable, thus user can watch the position of shelf depreciation point intuitively.Positioning result can also be carried out showing and preserving with the form of document.
For Hi-pot test cable, as shown in Figure 4, the concentric cable (as 50 Ω concentric cable) of some sections of certain lengths can be comprised, wherein at least one section of concentric cable is provided with defect point, each section of concentric cable can pass through cable splice (as BNC connector) and be connected in series, the emulation location of the shelf depreciation point of multiple position can be carried out, the site environment of various complexity can be emulated.
The charged linear measure longimetry of high-tension cable of the present invention and Partial Discharge Detection location simulation system, can be widely used in various Simulation Experimental Platform and training system, set up simulation mathematical model storehouse and model bank, the digitizing, visual emulating the charged linear measure longimetry of high-tension cable and Partial Discharge Detection location can be realized, set up the Network Training System of interactive virtual reality training.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (5)
1. the charged linear measure longimetry analogue system of high-tension cable, is characterized in that, comprising: Hi-pot test cable, the first coupling mechanism, the second coupling mechanism and the 3rd coupling mechanism, impulses injection module, signal measurement module, synchronization signal detection module;
Described signal measurement module, synchronization signal detection module connect the first end points of described Hi-pot test cable respectively by described first coupling mechanism, the 3rd coupling mechanism;
Described impulses injection module connects the second end points of described Hi-pot test cable by described second coupling mechanism;
Described signal measurement module produces trigger pulse and transfers to described impulses injection module, after described impulses injection module receives described trigger pulse, output encoder pulse is back to described synchronization signal detection module and receives, trigger pulse, coded pulse waveform on a timeline described in described synchronization signal detection module record, and according to moment corresponding to described waveform and pulse propagation velocity, charged linear measure longimetry is carried out to described Hi-pot test cable;
Described synchronization signal detection module records trigger pulse and coded pulse waveform on a timeline, synchronization signal detection module adopts magnetic field measurement instrument, utilizes electromagnetic coupled principle, when having pulse current to pass through in the 3rd coupling mechanism, lock the electromagnetic field that this electric current produces, record waveform correlation;
Described synchronization signal detection module comprises the process that described high-tension cable carries out charged linear measure longimetry:
In formula, L is the length of high-tension cable, t
1for the moment that described trigger pulse waveform negative edge is on a timeline corresponding, t
2for the moment that described coded pulse waveform beginning is on a timeline corresponding, T is for described impulses injection module is from the time received spent by described trigger pulse to output encoder pulse, and v is the velocity of propagation of pulse in high-tension cable.
2. the charged linear measure longimetry analogue system of high-tension cable according to claim 1, is characterized in that, also comprise repeated test control module, produces repeatedly trigger pulse for controlling described signal measurement module.
3. the charged linear measure longimetry analogue system of high-tension cable according to claim 1, is characterized in that, described Hi-pot test cable comprises some sections of concentric cable, is connected in series by cable splice.
4. a high-tension cable charged Partial Discharge Detection location simulation system, is characterized in that, comprising: the Hi-pot test cable being provided with defect point, first coupling mechanism, the second coupling mechanism and the 3rd coupling mechanism, impulses injection module, signal measurement module, synchronization signal detection module, data report module;
Described signal measurement module, synchronization signal detection module connect the first end points of described Hi-pot test cable respectively by described first coupling mechanism, the 3rd coupling mechanism;
Described impulses injection module connects the second end points of described Hi-pot test cable by described second coupling mechanism;
Described signal measurement module produces excitation pulse and transfers to described defect point, the partial discharge pulse propagated respectively to the first end points and the second end points is produced at described defect point place, after described impulses injection module receives described partial discharge pulse, output encoder pulse is back to described synchronization signal detection module and receives, partial discharge pulse, coded pulse waveform on a timeline described in described synchronization signal detection module record, and according to moment corresponding to described waveform and pulse propagation velocity, charged Partial Discharge Detection location is carried out to described Hi-pot test cable;
Described synchronization signal detection module records partial discharge pulse and coded pulse waveform on a timeline, synchronization signal detection module adopts magnetic field measurement instrument, utilizes electromagnetic coupled principle, when having pulse current to pass through in the 3rd coupling mechanism, lock the electromagnetic field that this electric current produces, record waveform correlation;
Described synchronization signal detection module comprises the process that described high-tension cable carries out charged Partial Discharge Detection location simulation:
In formula, x is the shelf depreciation o'clock distance from the first end points, and L is the length of high-tension cable, t
1for the moment that described partial discharge pulse waveform is on a timeline corresponding, t
2for the moment that described coded pulse waveform is on a timeline corresponding, T is for described impulses injection module is from the time received spent by described partial discharge pulse to output encoder pulse, and v is the velocity of propagation of pulse in high-tension cable;
Described data report module, for carrying out visual presentation by the positioning result of described charged Partial Discharge Detection location simulation; By the sectional drawing of shelf depreciation collection of illustrative plates and cable local discharge o'clock a virtual enterprising line flicker display of transformer station's high-tension cable, thus user can watch the position of shelf depreciation point intuitively.
5. high-tension cable according to claim 4 charged Partial Discharge Detection location simulation system, it is characterized in that, described Hi-pot test cable comprises some sections of concentric cable, and wherein at least one section of concentric cable is provided with defect point, and each section of concentric cable is connected in series by cable splice.
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| CN103399259B (en) * | 2013-08-16 | 2016-03-23 | 国家电网公司 | Based on the input signal recognition methods of single-end suspension simulation model |
| CN104569769A (en) * | 2015-01-29 | 2015-04-29 | 国家电网公司 | Power cable partial discharge simulation system and testing method |
| CN104655995A (en) * | 2015-01-29 | 2015-05-27 | 国家电网公司 | Dual-end positioning method for partial discharge source of power cable |
| CN105223528B (en) * | 2015-10-20 | 2017-02-01 | 国家电网公司 | Adjustable cable partial discharge simulation device |
| CN110726906B (en) * | 2019-10-15 | 2022-03-15 | 武汉三相电力科技有限公司 | Method and system for detecting cable length |
| CN113295081B (en) * | 2021-04-15 | 2023-09-22 | 江苏省电力试验研究院有限公司 | Time-frequency domain-based coiled cable length measurement system and method |
| CN113608078B (en) * | 2021-06-29 | 2023-12-29 | 深圳供电局有限公司 | Partial discharge test system |
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Effective date of registration: 20200917 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |