CN104569755A - Method and device for arranging built-in sensors of GIS - Google Patents
Method and device for arranging built-in sensors of GIS Download PDFInfo
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- CN104569755A CN104569755A CN201410836324.9A CN201410836324A CN104569755A CN 104569755 A CN104569755 A CN 104569755A CN 201410836324 A CN201410836324 A CN 201410836324A CN 104569755 A CN104569755 A CN 104569755A
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Abstract
The invention discloses a method and a device for arranging built-in sensors of a GIS (Gas Insulated Substation). The method comprises the following steps: acquiring GIS structural features of a GIS simulation model; according to the GIS structural features and preset rules, determining a number and mounting positions of the built-in sensors in the GIS, wherein the sensors are used for detecting variation of an electromagnetic wave signal excited by partial discharge. By the method and the device for arranging the built-in sensors of the GIS, the problem of difficulty in carrying out deep experimental research on the attenuation characteristic of a single part of the GIS in the related technologies due to limitation to the GIS structure and the mounting positions of UHF (Ultra High Frequency) sensors is solved so as to achieve that the electromagnetic wave signal excited by partial discharge can be accurately detected by the optimally mounted sensors.
Description
Technical field
The present invention relates to power domain, in particular to a kind of method for arranging and device of gas insulated transformer substation GIS built-in sensors.
Background technology
Superfrequency (Ultra High Frequency, referred to as UHF) method detect to as if shelf depreciation produce electromagnetic wave signal.But owing to being subject to gas insulated transformer substation (Gas Insulated Substation, referred to as GIS) impact of structure, when the electromagnetic wave signal of shelf depreciation excitation propagates into type UHF sensor in GIS, the parameter such as waveform and amplitude of signal changes, thus adds the complicacy that signal that utilization detects assesses Partial Discharge Sources signal.Therefore, study the propagation characteristic of shelf depreciation electromagnetic wave signal in GIS to have very important significance to UHF method.Although recent domestic scholar has carried out more research to Electromagnetic Wave Propagation spy in GIS, rarely has further investigation in the travel path of electromagnetic wave in GIS and the concrete attenuation change characteristic in each parts (insulator, L-type branch etc.).
For the restriction being subject to GIS structure and type UHF sensor installation site in correlation technique, be difficult to the problem attenuation characteristic of the single parts of GIS being goed deep into experimental study, do not propose effective solution in the related.
Summary of the invention
The invention provides a kind of method for arranging and device of gas insulated transformer substation GIS built-in sensors, at least to solve the restriction that prior art is subject to GIS structure and type UHF sensor installation site, be difficult to the problem attenuation characteristic of the single parts of GIS being goed deep into experimental study.
According to an aspect of the present invention, provide a kind of method of gas insulated transformer substation GIS built-in sensors, it is characterized in that, comprising: the GIS architectural feature obtaining described GIS realistic model; Determine quantity and the installation site of built-in described sensor in described GIS realistic model according to preset rules according to described GIS architectural feature, this sensor is for detecting the electromagnetic wave signal change of shelf depreciation excitation.
Preferably, described preset rules comprise following one of at least: the significance level of described GIS different parts, there is the probability of defect.
Preferably, described GIS architectural feature comprise following one of at least: straight barrel type GIS, L-type GIS, T-shaped GIS.
Preferably, determine that the quantity of built-in described sensor in described GIS realistic model and installation site comprise according to described GIS architectural feature according to described preset rules: for described straight barrel type GIS, the insulator at interval of 4-5 arranges a described sensor; A described sensor is respectively arranged in isolating switch both sides.
Preferably, determine that the quantity of built-in described sensor in described GIS realistic model and installation site comprise according to described GIS architectural feature according to described preset rules: for described L-type GIS, the insulator at interval of 3-4 arranges a described sensor.
Preferably, determine that the quantity of the built-in described sensor in described GIS realistic model and installation site comprise according to described GIS architectural feature according to described preset rules: for described T-shaped GIS, arrange a described sensor at interval of 3-4 insulator and/or arrange a described sensor in described T-shaped GIS corner.
According to another aspect of the present invention, additionally provide a kind of device of gas insulated transformer substation GIS built-in sensors, comprising: acquisition module, for obtaining the GIS architectural feature of described GIS realistic model; Determination module, determines quantity and the installation site of built-in described sensor in described GIS realistic model according to preset rules according to described GIS architectural feature, this sensor is for detecting the electromagnetic wave signal change of shelf depreciation excitation.
Preferably, described determination module is used for determining described quantity and installation site according to following one of at least preset rules: the significance level of described GIS different parts, the probability of defect occurs.
Preferably, acquisition module for the described GIS architectural feature obtained comprise following one of at least: straight barrel type GIS, L-type GIS, T-shaped GIS.
Pass through the present invention, adopt the GIS architectural feature obtaining GIS realistic model, determine quantity and the installation site of built-in sensors in GIS realistic model according to preset rules according to GIS architectural feature, wherein, sensor is for detecting the electromagnetic wave signal change of shelf depreciation excitation.Solve the restriction by GIS structure and type UHF sensor installation site in correlation technique, be difficult to the problem attenuation characteristic of the single parts of GIS being goed deep into experimental study, and then reach the effect can carrying out accurately detection by optimizing the sensor installed to the electromagnetic wave signal of local discharge excitation.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the process flow diagram of the method for gas insulated transformer substation GIS built-in sensors according to the embodiment of the present invention;
Fig. 2 is the structured flowchart of the device of gas insulated transformer substation GIS built-in sensors according to the embodiment of the present invention;
Fig. 3 is the many insulators straight tube illustraton of model according to the embodiment of the present invention;
Fig. 4 is the many insulators straight tube model emulation result figure according to the embodiment of the present invention;
Fig. 5 is the two L duplexure illustratons of model according to the embodiment of the present invention;
Fig. 6 is the two L duplexure model emulation result figure according to the embodiment of the present invention;
Fig. 7 is three L duplexure illustratons of model according to the embodiment of the present invention;
Fig. 8 is three L duplexure model emulation result figure according to the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Provide a kind of method for arranging of gas insulated transformer substation GIS built-in sensors in the present embodiment, Fig. 1 is the process flow diagram of the method for gas insulated transformer substation GIS built-in sensors according to the embodiment of the present invention, and as shown in Figure 1, this flow process comprises the steps:
Step S102, obtains the GIS architectural feature of GIS realistic model;
Step S104, determines quantity and the installation site of built-in sensors in this GIS realistic model according to preset rules according to GIS architectural feature, this sensor is for detecting the electromagnetic wave signal change of shelf depreciation excitation.
In close relations due between electromagnetic wave signal and check point, by above-mentioned steps, adopts the GIS architectural feature according to the GIS realistic model obtained, determines quantity and the installation site of built-in sensors in GIS realistic model according to preset rules.Solve the restriction by GIS structure and type UHF sensor installation site in correlation technique, being difficult to the problem attenuation characteristic of the single parts of GIS being goed deep into experimental study, reaching the effect can carrying out accurately detection by optimizing the sensor installed to the electromagnetic wave signal of local discharge excitation.
Determine that the quantity of built-in sensors and the factor of installation site can have a variety of in GIS realistic model, in a preferred embodiment, preset rules can be the significance level of GIS different parts, the probability of generation defect.
Can having of GIS architectural feature is a variety of, wherein can comprise: straight barrel type GIS, L-type GIS, T-shaped GIS.
In a preferred embodiment, for straight barrel type GIS, the insulator at interval of 4-5 arranges this sensor; A sensor is respectively arranged in isolating switch both sides.
In a further advantageous embodiment, for L-type GIS, the insulator at interval of 3-4 arranges a sensor.
In a further advantageous embodiment, for T-shaped GIS, arrange a sensor at interval of 3-4 insulator and/or arrange a sensor in T-shaped GIS corner.
Additionally provide a kind of device of gas insulated transformer substation GIS built-in sensors in the present embodiment, this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation.As used below, term " module " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably realizes with software, hardware, or the realization of the combination of software and hardware also may and conceived.
Fig. 2 is the structured flowchart of the device of gas insulated transformer substation GIS built-in sensors according to the embodiment of the present invention, and as shown in Figure 2, this device comprises: acquisition module 22, for obtaining the GIS architectural feature of GIS realistic model; Determination module 24, determines quantity and the installation site of built-in sensors in GIS realistic model according to preset rules according to GIS architectural feature, wherein, sensor is for detecting the electromagnetic wave signal change of shelf depreciation excitation.
Preferably, determination module 24 is for according to following one of at least preset rules determination number of sensors and installation site: the significance level of GIS different parts, the probability of defect occurs.
Preferably, acquisition module 22 for the GIS architectural feature obtained comprise following one of at least: straight barrel type GIS, L-type GIS, T-shaped GIS.
For the problems referred to above existing in correlation technique, in conjunction with above-described embodiment, in the preferred embodiment, GIS inner built-in sensors preferred arrangement principle is given.The propagation properties of the GIS according to various structures is determined that GIS inner built-in sensors preferred arrangement principle is described in detail below.
1. the electromagnetic transmission characteristic of more than insulator straight tube model.
Fig. 3 is the many insulators straight tube illustraton of model according to the embodiment of the present invention, as shown in Figure 3, sets up emulation realistic model: inner wire R=45mm; Outer conductor R=190mm; Long 7 meters of GIS straight tube, centre is distributed with 7 insulators with 1 meter of spacing.Shelf depreciation electric current is the Gauss pulse electric current of 2GHz, amplitude 10mA.The electromagnetic wave signal change of 17 probe monitoring shelf depreciations excitation is filled with spacing 0.25 meter ampere at GIS straight tube wall.
Fig. 4 is the many insulators straight tube model emulation result figure according to the embodiment of the present invention, and as shown in Figure 4, the electromagnetic wave signal of shelf depreciation excitation is through first insulator due to impacts such as effect of dispersion, reflection and leakages, and decay is comparatively large, reaches 7.9dB.Then electromagnetic wave signal is that decay becomes less through insulator below.Signal amplitude after 6 insulators with occur shelf depreciation air chamber in signal compared with only have its 10%, namely decay reach 20dB.
2. the electromagnetic transmission characteristic of pair L duplexure model.
Fig. 5 is the two L duplexure illustratons of model according to the embodiment of the present invention, as shown in Figure 5, sets up emulation realistic model: GIS You Liangge L branch.At barrel interval, 0.2 meter of point installs the electromagnetic wave signal change that shelf depreciation excitation monitored by probe, installs 17 probes altogether.Shelf depreciation electric current is the Gauss pulse electric current of 2GHz, amplitude 10mA.
Fig. 6 is the two L duplexure model emulation result figure according to the embodiment of the present invention, as shown in Figure 6, shows shelf depreciation electromagnetic wave signal amplitude attenuation characteristic after 2 L branches.
As seen from Figure 6 shelf depreciation excitation electromagnetic wave signal through first L branch and with first insulator due to the impact such as effect of dispersion, reflection, decay larger.But the impact of reflecting due to follow-up insulator and corner barrel etc. makes signal produce synergistic effect in communication process, signal becomes less in first branch (comprising first insulator part) by decay when insulator continuous later and second branch.Through 2 L divide the signal amplitude after stand (there are three insulators centre) with occur shelf depreciation air chamber in signal be in a ratio of its about 20%, namely decay to 14dB.
3. the electromagnetic transmission characteristic of three L duplexure models.
Fig. 7 is three L duplexure illustratons of model according to the embodiment of the present invention, and as shown in Figure 7, setting up emulation realistic model: GIS has three L branches.At barrel interval, 0.2 meter of point installs the electromagnetic wave signal change that shelf depreciation excitation monitored by probe, installs 19 probes altogether.Shelf depreciation electric current is the Gauss pulse electric current of 2GHz, amplitude 10mA.
Fig. 8 is three L duplexure model emulation result figure according to the embodiment of the present invention, as shown in Figure 8, shows shelf depreciation electromagnetic wave signal amplitude attenuation characteristic simulation result after 3 L branches.
As seen from Figure 8, shelf depreciation excitation electromagnetic wave signal through first L branch and with first insulator due to the impact such as effect of dispersion, reflection, decay larger.But the impact of reflecting due to follow-up insulator and corner barrel etc. makes signal produce synergistic effect in communication process, signal becomes less in first branch (comprising first insulator part) by decay when insulator continuous later and second branch and the 3rd branch.Through 3 L divide the signal amplitude after stand (there are 4 insulators centre) with occur shelf depreciation air chamber in signal be in a ratio of its about 10%, namely decay to 20dB.
Comprehensive above-mentioned simulation calculation result of study is visible:
(1) electromagnetic wave signal of shelf depreciation excitation reaches 7.9dB through first insulator decay, and then electromagnetic wave signal is that decay becomes less through insulator below.Signal amplitude after 6 insulators with occur shelf depreciation air chamber in signal compared with only have its 10%, namely decay reach 20dB.
(2) shelf depreciation excitation electromagnetic wave signal through first L branch and with the decay of first insulator larger.Through 2 L divide the signal amplitude after stand (there are three insulators centre) with occur shelf depreciation air chamber in signal be in a ratio of its about 20%, namely decay to 14dB.
(3) shelf depreciation excitation electromagnetic wave signal through 3 L divide the signal amplitude after stand (there are 4 insulators centre) with occur shelf depreciation air chamber in signal be in a ratio of its about 10%, namely decay to 20dB.
(4) can see from the above analysis, in the GIS of normal space, Partial discharge signal is from any to another point, and attenuator is more than 10 times.If adopt standard bandwidth to detect, an interval arranges that a sensor can detect the Partial discharge signal of below 5pC.Consider from engineer applied, not only need Partial discharge signal to be detected, when defect occurs, also should be able to put sensor by office and accurate positioning analysis is carried out to defect, therefore an interval at least needs installation 2 sensors, consider the concrete structure of GIS, it is proper for installing 2-3 sensor with each interval simultaneously.
(5) consider the significance level of GIS different parts in addition and the probability size of defect occurs, a sensor can be arranged for the every 4-5 of a straight tube GIS insulator; A sensor respectively can be arranged in isolating switch both sides; A sensor can be arranged for the every 3-4 of a L-type GIS insulator; For many L branch or T-shaped branch GIS then every 3-4 insulator or T-shaped curved near a layout sensor.
In sum, by the GIS of the present invention according to different structure shape, determine quantity and the installation site of built-in sensors in GIS realistic model, thus reach the effect can carrying out accurately detection by optimizing the sensor installed to the electromagnetic wave signal of local discharge excitation.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a method for arranging for gas insulated transformer substation GIS built-in sensors, is characterized in that, comprising:
Obtain the GIS architectural feature of described GIS realistic model;
Determine quantity and the installation site of built-in described sensor in described GIS realistic model according to preset rules according to described GIS architectural feature, this sensor is for detecting the electromagnetic wave signal change of shelf depreciation excitation.
2. method according to claim 1, is characterized in that, described preset rules comprise following one of at least:
The significance level of described GIS different parts, the probability of generation defect.
3. method according to claim 2, is characterized in that, described GIS architectural feature comprise following one of at least:
Straight barrel type GIS, L-type GIS, T-shaped GIS.
4. method according to claim 3, is characterized in that, determines that the quantity of built-in described sensor in described GIS realistic model and installation site comprise according to described GIS architectural feature according to described preset rules:
For described straight barrel type GIS, the insulator at interval of 4-5 arranges a described sensor;
A described sensor is respectively arranged in isolating switch both sides.
5. method according to claim 3, is characterized in that, determines that the quantity of built-in described sensor in described GIS realistic model and installation site comprise according to described GIS architectural feature according to described preset rules:
For described L-type GIS, the insulator at interval of 3-4 arranges a described sensor.
6. method according to claim 3, is characterized in that, determines that the quantity of the built-in described sensor in described GIS realistic model and installation site comprise according to described GIS architectural feature according to described preset rules:
For described T-shaped GIS, arrange a described sensor at interval of 3-4 insulator and/or arrange a described sensor in described T-shaped GIS corner.
7. a device for gas insulated transformer substation GIS built-in sensors, is characterized in that, comprising:
Acquisition module, for obtaining the GIS architectural feature of described GIS realistic model;
Determination module, for determining quantity and the installation site of built-in described sensor in described GIS realistic model according to preset rules according to described GIS architectural feature, this sensor is for detecting the electromagnetic wave signal change of shelf depreciation excitation.
8. device according to claim 7, is characterized in that, described determination module is used for determining described quantity and installation site according to following one of at least preset rules:
The significance level of described GIS different parts, the probability of generation defect.
9. device according to claim 8, is characterized in that, acquisition module for the described GIS architectural feature obtained comprise following one of at least: straight barrel type GIS, L-type GIS, T-shaped GIS.
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Cited By (5)
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| CN105974275A (en) * | 2016-04-08 | 2016-09-28 | 许继集团有限公司 | Partial discharge monitoring sensor optimized arrangement method and system |
| CN109358677A (en) * | 2018-11-14 | 2019-02-19 | 贵州电网有限责任公司 | The environment automatic regulating system Temperature Humidity Sensor points distributing method of substation control buildings |
| CN110146838A (en) * | 2019-05-07 | 2019-08-20 | 广东电网有限责任公司 | A kind of built-in metal foil partial discharge sensor determines ginseng method |
| CN110543717A (en) * | 2019-08-29 | 2019-12-06 | 南方电网科学研究院有限责任公司 | method and device for constructing temperature rise characteristic simulation model of GIS (gas insulated switchgear) |
| CN111896848A (en) * | 2020-06-24 | 2020-11-06 | 国网江苏省电力有限公司电力科学研究院 | Internal discharge positioning method, terminal, system and storage medium of power transmission line |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974275A (en) * | 2016-04-08 | 2016-09-28 | 许继集团有限公司 | Partial discharge monitoring sensor optimized arrangement method and system |
| CN105974275B (en) * | 2016-04-08 | 2019-02-05 | 许继集团有限公司 | Partial discharge monitoring sensors optimum placement method and system |
| CN109358677A (en) * | 2018-11-14 | 2019-02-19 | 贵州电网有限责任公司 | The environment automatic regulating system Temperature Humidity Sensor points distributing method of substation control buildings |
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| CN110146838B (en) * | 2019-05-07 | 2020-12-29 | 广东电网有限责任公司 | Parameter determination method for built-in metal foil partial discharge sensor |
| CN110543717A (en) * | 2019-08-29 | 2019-12-06 | 南方电网科学研究院有限责任公司 | method and device for constructing temperature rise characteristic simulation model of GIS (gas insulated switchgear) |
| CN111896848A (en) * | 2020-06-24 | 2020-11-06 | 国网江苏省电力有限公司电力科学研究院 | Internal discharge positioning method, terminal, system and storage medium of power transmission line |
| CN111896848B (en) * | 2020-06-24 | 2023-09-12 | 国网江苏省电力有限公司电力科学研究院 | Internal discharge positioning method, terminal, system and storage medium of power transmission line |
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Application publication date: 20150429 |