CN108321691A

CN108321691A - A kind of high-tension switch cabinet with defect inspection and integrated control functions

Info

Publication number: CN108321691A
Application number: CN201810117766.6A
Authority: CN
Inventors: 李宏仁; 肖红; 曾庆才; 杨帆; 冯权龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-02-06
Filing date: 2018-02-06
Publication date: 2018-07-24
Anticipated expiration: 2038-02-06
Also published as: CN108321691B; WO2019153478A1

Abstract

The invention discloses a kind of high-tension switch cabinets with defect inspection and integrated control functions, high-tension switch cabinet includes each compartment and is installed on the comprehensive control device of secondary chamber, in switchgear cable vault, the first metallic shield for installing sensor is provided on partition board between its cable vault and bus-bar room, first predetermined fraction of the first metallic shield is located at height J of 10-40 centimetres away from outlet under breaker, and on the position of 0-15 centimetres of the center line against breaker B phase outlets, and the part of at least the first predetermined fraction is by hollow out；The present invention is realized is integrated into same place the test point of insulation defect and thermal defect detection, to further by switchgear become to have self-monitoring, self-protection, self-contr ol intelligent power supply equipment.

Description

A kind of high-tension switch cabinet with defect inspection and integrated control functions

Technical field

The present invention relates to power supply, controller switching equipment fields, and in particular, to one kind having defect inspection and integrated control functions High-tension switch cabinet.

Background technology

High-tension switch cabinet is the commonly used equipment of power supply system, and structure generally includes：Bus-bar room, breaker chamber, cable vault It is constituted with several parts such as secondary chamber and its internal element.Switchgear during fabrication, the problem of not considering how to monitor it, So switchgear itself is without monitoring function and corresponding structure.Since workmanship and ageing equipment etc. are former Cause, in the process of running inside switch cabinet will appear various defects and failure, such as overheat, insulation ag(e)ing, electric discharge, sudden strain of a muscle The various defects such as network, mechanical bite, action failure, and these defects usually eventually develop into serious switchgear accident. In the various defects of switchgear, the overheat caused by poor contact this thermal defect is asking for electric field headache the most Topic.The file of Publication No. CN102243285A discloses " a kind of failure detector and side based on temperature and amperometry Method ", the invention solve connector temperature and are combined asking for thermal defect to judge busbar shiplap joint failure with electric current to a certain extent Topic, but since the program is in high-pressure side mounting temperature sensor, current sensor, high-pressure side data acquisition module and high and low The elements such as data transmission module are pressed, thus there is security risks.In the file of Patent No. ZL201310519918.2, carry Go out through the air themperature of each compartment of detection switch cabinet rather than some specific contact point and has been helped in conjunction with its load current The method for helping the thermal defect for finding that switchgear may overheat due to poor contact, the specific practice of the program are：" temperature sensor The top of each current-carrying compartment space in high-tension switch cabinet, or communicated with compartment space on top cover for switch cabinet plate Cavity in, " (0008).Although this scheme preferably solve monitoring system safety issue, monitoring position it is incomplete The problems such as problem and system are excessively complicated, but inventor further study show that：If according to the party in putting into practice at the scene Case is detected the thermal defect of switchgear, and analysis result usually will appear mistake, is often difficult to judge whether defect, with And defect substantially takes place in any position.In addition, in order to find that the various defect people of switchgear have done a large amount of research in time, Various types of detection devices are developed, but these equipment, which are all later install additional, to get on, it is original to change switchgear Structure and state, this brings difficulty for switchgear operation in the future and maintenance, also increases insecurity.And it is various Monitoring device is often all more complicated and is self-organizing system, and a switchgear is difficult that so more different systems are all loaded onto.Although Have very early viewpoint proposition wish to various defect inspections to be integrated into a unified system, but due to various defects, Especially the operation principle of high pressure part defect inspection, the position of signal detection and detection mode difference are too big, it is difficult to integrate It is difficult to realize together.Just since this problem is not resolved, so overwhelming majority switchgear at present, is still within nothing Monitor state.And on the other hand, with progress of the epoch, people are increasing to the dependency degree of electricity, electric system is highly desirable to It is a kind of it is simple in structure, do not change the original structure of switchgear as possible, while have can the various defect functions of comprehensive monitoring high pressure Switchgear, especially because the prevalence of unattended operation transformer station, had concurrently with greater need for one kind can far control circuit breaker cart into and out of The switchgear of the functions such as vehicle convenient for management and is safeguarded, reduces the time of power failure maintenance and inspection.

Invention content

This (invention) provides a kind of high-tension switch cabinet, to overcome the shortcomings of existing switchgear, it is desirable to not change as far as possible Under the premise of switchgear original structure, by certain structures as simple as possible and less input, high pressure part defect is supervised The test point of survey is organically integrated into same place, and the monitoring of all kinds of defects of switchgear, control are focused on one to be finally reached The technique effect of a unified intelligent centre so that switchgear can better adapt to demand of the modern society for electric power.

Originally the basic ideas of (invention) are：1. to resolve thermal defect monitoring as breach, combs and improve existing inspection Survey technology reaches the target for enabling the various defects detections in switchgear high pressure part to be realized at the same position；2. in switchgear height Pressure compartment interior setting can meet the public passage of a variety of high pressure defect information detections, to pacify various sensors and connecting line Loaded on wherein；3. a unified intelligent management center is arranged in switchgear, i.e., a kind of new switch cabinet comprehensive measure and control device makes It can realize the monitoring to much information, parameter, analyze and can be operated, controlled to switchgear automatically.

Inventor's research thinks that the defect of switchgear can be attributed to three classes substantially:1. being made due to poor contact etc. At thermal defect；2. insulation defect；3 mechanical defects.Especially because thermal defect caused by the reasons such as poor contact is usually recognized For be electric field the most headache the problem of, and can realize the technology monitored to thermal defect at present seldom and there is also bright It is inadequate.Switchgear thermal defect detects and switchgear temperature measurement on-line, although it is not the one thing to be related therebetween.It is online to survey Temperature is by monitoring temperature at that time to judge whether switchgear heat overheat occurs；Although and thermal defect monitoring also will to temperature into Row detection, but whether purpose is the defect that switchgear to be determined whether there is poor contact, be to switchgear it is possible that mistake The anticipation of heat.Although temperature when many at that time is not high, still there may be the defects of poor contact.

Inventor has found during studying thermal defect, by the detection to switchgear high pressure compartment air temperature with And the detection of relevant electric current, and correlation analysis is carried out to this temperature and electric current, it will be able to it realizes and is monitored in low-voltage region Switchgear thermal defect failure that may be present proposes such as in the file of the Patent No. ZL201310519918.2 of its application It some specific contact points and helps by the air themperature of each compartment of detection switch cabinet rather than in conjunction with its load current It was found that the method for thermal defect, this is because the fever of switchgear be by by electric current produced by, so switchgear compartment Air themperature has correspondence with electric current.The present invention exactly has found thermal defect existing for switchgear using this principle.Letter It singly says, for example temperature rise value of certain compartment under different electric currents is recorded in switchgear initial operation stage, so that it may to obtain the compartment The chart of Wen Shengyu electric current correspondences, in the operation in switchgear later stage, constantly by the temperature measured, current value and this figure Table compares, if temperature rise value is apparently higher than the temperature rise value under phase induced current in chart, shows that the fever rule of equipment has occurred Variation, it is understood that there may be the thermal defect of poor contact, the air themperature of compartment is actually the integrated temperature in a section here, this Method substantially determines whether there is thermal defect by the monitoring of the situation of change to this section integrated temperature, when There is also certain problems for right this simple method.

Research of the prior art for thermal defect or problems of excessive heat is all that switchgear and its compartment are regarded as an orphan Erection system is treated.Inventor find, the air themperature of compartment is not only related with the element heating of this compartment, also with it is adjacent every The heat condition of room is related；So in order to correctly judge whether thermal defect, it just must be to the temperature and phase of adjacent compartments It influences to take in caused by the temperature of adjacent compartment.In the analysis of thermal defect, the air themperature of each compartment becomes as independent Amount has an impact analysis result, and the independent variable for participating in analysis is only independent enough, the correlation point carried out by these variables Analysis can just obtain it is good as a result, whereas if participate in analysis variable between have existed apparent intersection, will notable shadow Ring analysis result.But it is often again interactional that actual conditions, which are temperature between each compartment, as inventor sends out in practice It is existing, even not only the temperature of each compartment is different and same compartment in the temperature of each point be also different.Inventor's discovery, In actual operation, bus-bar room is often the highest compartment of temperature, and the influence to other compartment temperatures is also maximum, so being terrible To correct as a result, the temperature sensor of other compartments should just avoid the influence of bus-bar room as far as possible, as possible far from bus-bar room； Even bus-bar room itself, internal Temperature Distribution be also it is non-uniform, it is higher closer to upper temp, such as putting into practice Middle discovery, the Wen Sheng of bus-bar room lower part often only has the half of top Wen Sheng, even lower.So it has been recognised by the inventors that heating part The path of heat transfer is shorter between position and sensor, and the heat exchange probability occurred is with regard to smaller；For breaker chamber, cable room temperature Spend the installation of sensor should also the high-temperature region far from bus-bar room as possible, be also more possible to obtain correct analysis result.Cause How this, the installation site of sensor is correctly selected in the detection of compartment temperatures, how to avoid the influence of adjacent compartments temperature, For can Correct Analysis thermal defect just seem most important.It facts have proved：If the installation site of temperature sensor is inappropriate, Effect will be very poor, or even cannot pinpoint the problems.

Such as cable vault, breaker chamber, if according to the scheme of documents ZL201310519918.2： " temperature sensor is mounted on the top of each current-carrying compartment space in high-tension switch cabinet, or on the top cover for switch cabinet plate with In the cavity that compartment space communicates ", method, it will since hot-air is during rising, there is more heat on the way It exchanges, the state and feature that the temperature data detected cannot will correctly reflect that contact point generates heat, point obtained by these data Serious deviation will likely occur in analysis result, and enable to detect that temperature has exception and increases, also due to existing too much Heat exchange and be difficult to differentiate be which compartment goes wrong actuallyProblem has mostly seriousTherefore, to obtaining correct result The installation site of sensor must be determined with overcome the deficiencies in the prior art well.

This programme is wished there are two the effects reached：First, it reliably discovers whether to have exception, whether there is contact not Good thermal defect；Second, after noting abnormalities, additionally it is possible to which defect substantially position is differentiated in help, which compartment is defect be happened atThis In, what compartment temperatures actually reflected is the integrated temperature in a section, and the temperature which point is monitored in this section is most effective It needs by research repeatedly.Inventor is concluded that by long felt：Stream of hot air is in the path for reaching sensor In, if the heat exchange that midway occurs is more, resolution to failure generation area poorer for the ability of correct faults Ability is also poorer.The closer sensor the more effective from heat generating spot in principle, but must take into account heat generating spot and be in high voltage portion Position, it is ensured that have enough dielectric levels, while the monitoring of multiple possible heating positions must also be taken into account.

So should the high-temperature region far from bus-bar room as possible for the temperature sensor of breaker chamber, cable vault.Namely It says, sensor should be installed to approach heating region downwards as far as possible in the case where meeting insulating requirements, while separate as possible Bus-bar room, rather than " top for being mounted on each current-carrying compartment " described in documents ZL201310519918.2.

According to exploration repeatedly, present invention determine that each compartment temperature sensor setting rational position be respectively：

First via compartment air temperature sensor is set to the top of outlet under cable vault middle part, breaker, away from breaker The height J of lower outlet is 10-40 centimeters, and is in the position of 0-10 centimetres of the center line away from breaker B phase outlets；

Second road compartment air temperature sensor is set in the middle part of breaker chamber, above breaker B phases, is in breaker B The position of 0-10 centimetres of the center line of phase, and be 10-40 centimeters away from the distance h at the top of breaker；

Third road compartment air temperature sensor is set in switch cabinet bus room 0-2 centimeters below head cover, and is in 0-3 centimetres of vertical centerline between two-phase busbar below cover board, 0-20 centimetres of the center line away from switchgear width direction Position on.

Each sensor installation position is described in further detail below：

For cable vault, in the middle part of cable vault, the 1st tunnel compartment temperature sensor, that is, temperature sensor 14 is located at open circuit The top of outlet under device, the height J away from outlet under breaker are 10-40 centimeters, and in away from breaker B phase outlets (see Fig. 2) on the position of 0-10 centimetres of heart line, if the other element heatings of lower union joint or cable vault, temperature sensing Device 14 is at stream of hot air and rises on path short as possible, is conducive to the confidence level for improving testing result.Simultaneously because breaking Outlet is in the lower section of bus-bar room, the minimum position of corresponding busbar room temperature under device, so the influence to testing result is minimum, and And since the actual installation position of sensor 14 is in switchgear, lower part is also beneficial to help to differentiate whether failure appears in Diaphragm plate position below in cable vault between bus-bar room., whereas if according to documents ZL201310519918.2's Sensor 14 is mounted on cable vault top by scheme, in practice it has proved that in this case, since there are too many heat exchanges, is passed Sensor 14 almost can't find the overheating fault of element in cable vault, and unlikely analysis finds thermal defect.Due to breaker B phases In between A phases and C phases on spatial position, temperature sensor 14 is in 0-10 lis of the approximate centerline of breaker B phase outlets On the position of rice, the monitoring to both sides heat condition has also just been taken into account very well simultaneously.

For breaker chamber, at the middle part of breaker chamber, the 2nd tunnel compartment temperature sensor, that is, temperature sensor 13 is located at It is 10--40 centimeters away from the distance h at the top of breaker above breaker chamber inner breaker B phases.In this way, ensureing insulating requirements Under the premise of by sensor as possible close to heating position, but also the temperature sensor is opposite relatively low in bus-bar room temperature of lower Position, to influenced by busbar room temperature it is as smaller as possible.Simultaneously because the spatial position of breaker B phases is in A phases Between C phases, temperature sensor 13 is located above breaker chamber inner breaker B phases, is in the approximate centerline of breaker B phases On 0-10 centimetres of position, the monitoring to both sides heat condition has equally been taken into account very well., whereas if according to documents The scheme of ZL201310519918.2：" temperature sensor be mounted on high-tension switch cabinet in each current-carrying compartment space top ", Sensor is mounted on the top of breaker chamber is especially influenced by bus-bar room due to heat exchange, and sensor therein is very Difficult correct reflection breaker and the heat condition of associated joint.Practice also turns out, this mounting means electric field Repeatedly wrong report occurs；

Due to inside switch cabinet narrow space, air insulation nargin is little, in order not to be reduced due to the loading because of sensor absolutely Edge is horizontal, therefore the 3rd tunnel compartment temperature sensor, that is, bus-bar room temperature sensor 12 is mounted on 0-2 li of top cover for switch cabinet or less The roughly equal position of the distance between two-phase busbar below the low-voltage region of rice and cover board, that is, be in below cover board In nearby 0-3 centimetres of vertical centerline, position between two-phase busbar.Although being mounted with sensor in this way, with high pressure mother Air insulation distance between line still will not reduce, and be guaranteed safely.The sensor 12 of bus-bar room is mounted on away from switchgear On the position of 0-20 centimetres of the center line of width direction so that the sensor is in bus-bar room centered position, temperature herein It can preferably reflect that bus-bar room integrates mean temperature.

Further, for the installation of the realization sensor on above-mentioned rational position, that is to say, that it is desirable that insulating meeting In the case of it is required that, sensor is enabled to approach the position for needing to monitor as much as possible, is handed over reducing the heat that may occur It changes, reaches ideal detection result, while being also all to be concentrated further to allow the number of drawbacks of switchgear high voltage device to detect To same place and signal decaying is reduced, to finally realize that the monitoring of the various defects of switchgear can focus in unified monitoring The target of the heart, this (invention) are provided with special metallic shield in the corresponding site of switchgear：

One, is in switchgear cable vault, in the middle part of cable vault, is arranged on the partition board between its cable vault and bus-bar room useful It is located at away from outlet under breaker in the first predetermined fraction of the first metallic shield of installation sensor, the first metallic shield 10-40 centimetres of height J, and on the position of 0-15 centimetres of the center line against breaker B phase outlets, and at least first is pre- If partial part is by hollow out.Cable vault's air temperature sensor is arranged at this hollow out position.

Two, are in breaker of switch cabinet room, in the middle part of breaker chamber, are provided with above breaker for installing sensing Second metallic shield of device, it is 10-that the second predetermined fraction of the second metallic shield, which is located at away from the height h at the top of breaker, 40 centimeters, and on the position of 0-10 centimetres of the center line in breaker B phases, and at least the second predetermined fraction has part By hollow out.Breaker chamber air temperature sensor is arranged at this hollow out position.

Three, switch cabinet bus room inside of top cover along the direction parallel with busbar, be provided with for installing sensor Strip third metallic shield, which is located at the vertical centerline 0 between two-phase busbar below cover board To 4 centimetres of positions, the third predetermined fraction of the shielding case is located at 0 to 20 centimetre of the center line of range switch cabinet width direction Place, and at least third predetermined fraction has part by hollow out.

In order to which sensor is approached ideal detection position under the premise of ensureing dielectric level, the metallic shield Shape is processed to appropriate radian, while shielding case is connected with switch cabinet shell body or partition board, with switch cabinet shell body shape At equipotential body.

This is because install sensor in hyperbaric environment, even if sensor very little and being mounted in low-voltage region, But still to may result in internal field too strong for the presence of the conductive body of protrusion so that air insulation level declines.Here The special metallic shield, which is arranged, most importantly will play homogeneous space electric field using its radian, prevent local electric-field strength Spend strong effect.For the electrode of electric field, the electric field strength of electrode surface and its radius of curvature square are inversely proportional, Radius of curvature is bigger, and the electric field strength on surface is lower, and field distribution is more uniform, and the dielectric level of air is also higher. Experimental data shows that the element comparison of electrode of the radius of curvature equal to 5mm and a common process, surface field intensity will drop Low tens times or more, and for the concrete structure of switchgear, the breakdown voltage level of air will double even number Times, that is to say, that it can be significantly increased using the shielding case of appropriate radius of curvature exhausted between sensor and electrification in high voltage position Edge is horizontal, to reach under conditions of not reducing dielectric level so that sensor approaches the mesh of ideal detection position as far as possible 's.This (invention) will be respectively chosen to be every the radius of curvature of the metallic shield of indoor location according to the actual conditions of switchgear electric field R=3-40mm.In this way, having been well solved by the setting of this shielding case high-voltage current position is monitored in low-voltage region The problem of fever, while also laying a good foundation for the Centralizing inspection of other high pressure defects.

The setting of shielding case is described in further detail further below：

One, is provided with for installing sensor in the middle part of cable vault on the partition board between its cable vault and bus-bar room One metallic shield, the shielding case part are located at height J of 10-40 centimetres away from outlet under breaker, and opposite breaker B On the position of 0-15 centimetres of the center line of phase outlet, and at least this part has part by hollow out, cable vault's air themperature sensing Device is arranged at this hollow out position.Since the partition board between cable vault and bus-bar room is all higher than the position of each heater element in cable vault, Metallic shield for installing sensor is arranged in this partition board, since cross-ventilation acts on, the fever of cable chamber components The temperature sensor that can be installed in shielding case detects well.This part of the shielding case is located at away from going out under breaker The height of 10-40 centimetres of line both ensure that the insulation to electrification in high voltage part, in turn ensures to generate heat to related elements and detect.Such as Other element heatings in fruit lower union joint or cable vault, then the temperature sensor being disposed therein is in stream of hot air In the shorter path risen, sensor has actually been approached into heating position, has been conducive to the validity for improving detection.Due to open circuit Outlet is in the lower section of bus-bar room, the minimum position of corresponding busbar room temperature, so the influence to testing result is minimum, together under device When since the actual installation position of sensor is in switchgear, lower part is also beneficial to help to differentiate whether failure appears in electricity Diaphragm plate position below in cable room between bus-bar room.The hollow out position of metallic shield is against in breaker B phase outlets It is in order to which the temperature sensor for ensureing to be disposed therein can while detect both sides well on the position of 0-15 centimetres of heart line The heat condition of position.

Second predetermined fraction of the second metallic shield is arranged in away from breaker by two, at the middle part of breaker chamber The height h at top is 10-40 centimeters, and on the position of 0-10 centimetres of the center line in breaker B phases, and at least herein Place makees local hollow out, in this way, both ensure that necessary dielectric level, is in but also the temperature sensor being disposed therein is opposite The lower position of bus-bar room temperature of lower, it is as smaller as possible to be influenced by busbar room temperature, while being also by sensor Heating position is approached.Since the spatial position of breaker B phases is between A phases and C phases, temperature sensor is located at breaker Above indoor breaker B phases, on the position of 0-10 centimetres of the approximate centerline in breaker B phases, also just take into account simultaneously pair The monitoring of both sides fever.

Three, are due to inside switch cabinet narrow space, and air insulation nargin is with regard to little, in order not to be dropped due to the loading because of sensor Low insulation is horizontal, therefore the inside of top cover in its bus-bar room is arranged along side parallel with busbar in the third metallic shield of strip To and in be located on the position of 0 to 4 centimetre of the vertical centerline between two-phase busbar below cover board, although in this way It is mounted with shielding case, the air insulation distance between high voltage bus still will not reduce, and be guaranteed safely.And by its distance 0 to the 20 centimeters part hollow out of center line of switchgear width direction so that the sensor being arranged at this is in bus-bar room residence In position, temperature herein can reflect that bus-bar room integrates mean temperature well.

In order to realize the monitoring for thermal defect, other than monitoring the air themperature of each compartment, this (invention) is for electric current The detection of parameter is that an at least current sensor is arranged on the secondary circuit of switch cabinet current transformer.

These compartment temperature sensors are plus the temperature sensor and current sensor and peace for detecting environment temperature Switchgear measure and control device loaded on switchgear secondary chamber constitutes switchgear thermal defect monitoring system.Here, switchgear observing and controlling fills It installs and is equipped at least 4 tunnel air themperature measure loops, 1 road current detection circuit, wherein 1 tunnel air themperature measure loop is for examining The air themperature of environment temperature, remaining 3 tunnel air themperature measure loop for each compartment in detection switch cabinet outside slowdown monitoring switch cabinet, Current detection circuit is used for detection switch cabinet load current, and the air temperature sensor of each compartment is mounted on engraving for the shielding case In empty position, current sensor is mounted on secondary loop of mutual inductor, and each temperature sensor and current sensor pass through Conducting wire is connected with the corresponding circuit of measure and control device.

Putting equipment in service initial stage, measure and control device or back-end data processing center according to the data of detection, obtain switchgear every Room is in varying environment temperature T_H, adjacent compartments temperature T_Z、T_YAnd this cabinet load current I_FUnder the conditions of this compartment temperatures one Group tables of data 1；

Table 1

To the method that this tables of data utilizes Mathematical Fitting, obtains the compartment temperatures at putting equipment in service initial stage and these are joined Several mathematic(al) representation T=f (T_H、T_Z、T_Y、I_F)；；Set a deviation △ d；Constantly detection in operation from now on To compartment temperatures value and the evaluation of expression formula compared, if the temperature detected is higher than calculated value, and more than setting Definite value △ d, then it is assumed that equipment heating situation deteriorates and sends out alarm, on the contrary, then it is assumed that, there is no problem.

In this way, by the setting of determination and special metallic shield for thermal defect detection sensor rational position, It has well solved the problem of low-voltage region monitors the fever at high-voltage current position so that by its of switchgear high pressure part The detection of its defect, which is brought together, lays a good foundation, can to finally make the Centralizing inspection of the various defects of switchgear have Energy.

Second object of the present invention is to improve on the basis of capturing thermal defect detection and integrate existing monitoring hand Section, provide it is a kind of can be the operation and control collection of the monitoring of the various defects of switchgear, measurement of electric parameter and switchgear together in one A unified intelligent management center --- the high-tension switch cabinet in comprehensive control device.

Switch cabinet comprehensive measure and control device is the common measurement control device installed in modern switchgear, has both traditional switch The functions such as electric parameter measurement display device, protective relaying device and the communication of cabinet, collection general measure, protection, operation, are shown control It is shown in one.Electric parameter measurement includes the electric power such as electric current, voltage, active power, power factor, the electric energy for measuring major loop ginseng Number, but existing switchgear measure and control device does not have switchgear defects detection function.

Further, a kind of switch cabinet comprehensive measure and control device, on the switch cabinet comprehensive measure and control device and/or be provided with to Few 1 tunnel ultrasound detection circuit, and/or at least 1 tunnel gas detection circuit, and/or at least 1 tunnel Photoelectric Detection circuit, it is corresponding super Sound, gas, photoelectric sensor are then respectively arranged at the hollow out position of aforementioned metal shielding case, and pass through conducting wire and switchgear observing and controlling The corresponding circuit of device is connected.

It due to manufacturing defect, insulation ag(e)ing or makes moist, high-tension switch cabinet is possible to part occur in the process of running Electric discharge phenomena, this electric discharge phenomena start often very faint, but serious short circuit accident are usually eventually developed to, so needing very much The high-voltage isulation state of switchgear is monitored.In general, usually all it is in high-voltage section for the detection of high pressure defect Position carries out, for example for thermal defect, the scheme of documents CN102243285A is exactly in high-pressure side mounting temperature sensor, electricity The mode of flow sensor, high-pressure side data acquisition module etc. realizes, and current in the scheme that low-voltage region is monitored Only the present inventor proposes, and there is also insufficient.In another example the detection for high-voltage isulation defect, typically in high-voltage section By the method for the electrical signal detections such as charge method, leakage current method, this will implement to be very difficult in switchgear for position.Though existing The ultrasonic signal method scheme of discharge signal monitoring can be carried out in low-voltage region by having, practice have shown that, before existing this type order The effect is unsatisfactory, fail to report, rate of false alarm it is also relatively high, it is difficult to become insulation defect detection main means.This is because switch Cabinet has not been used to corresponding construction and the channel of signal detection, various high voltage devices are equipped in high pressure compartment originally, senses The installation of device will be limited by a variety of factors, and it is very difficult for especially avoiding blocking.And the ultrasound letter of shelf depreciation Number, the insulation defects monitoring such as arc discharge signal detection is required for carrying out in high pressure compartment, in practice it has proved that, in high pressure compartment Different location installation sensor effect is different, difference even meeting in the case of especially being blocked between sensor and signal source It is very big.Although ultrasonic signal and optical signal have certain reflection effect in compartment, if the installation site of sensor Improper, in the case of being especially in the presence of shelter, the signal strength that signal reaches sensor after multiple reflections may only have 10%--20% originally, it is even lower, to will be greatly reduced detection result, so for signals such as ultrasound, electric discharges Detection, the installation position selection of sensor are equally very important.Also just because of the installation of sensor by various restrictions, So being difficult to install sensor in rational position in practical applications, can only usually be installed in the place of relatively convenient. Such as sonac, photoelectric sensor usually have to be mounted on switchgear high pressure compartment side wall on, cause sensor from every The distance of indoor each element differs, and difference is very big, for even will be every several shelters, serious shadow between some positions Detection result is rung, so while ultrasonic Partial Discharge Detection, photoelectricity discharge signal detection technique early have application, but it is final practical Detection result is unsatisfactory, and the case where reporting by mistake, failing to report happens occasionally.The present invention is equipped with gas on switch cabinet comprehensive measure and control device And/or ultrasonic and/or Photoelectric Detection circuit, by ultrasound/gas that the hollow out position in aforementioned each compartment metallic shield is arranged Body/photoelectric sensor, these sensors can realize the electric discharge letter for occurring in respective compartment well on this position It number is detected.In addition inventor also found, often with certain special gas when starting to discharge in switchgear Appearance, such as ozone, nitric oxide, nitrogen dioxide, and send out ultrasonic signal can pass through the inspection to these special gas It surveys and helps to find the electric discharge of early stage, to overcome the problems, such as that the prior art is only reported by mistake caused by ultrasound detection, failed to report.By Ideal inspection has actually been approached as far as possible under conditions of meeting insulating requirements in the sensor mounting location of this programme setting Position is surveyed, and has taken into account the detection for position around well, seldom exists with each interelement and blocks, therefore the shielding case Setting not only meet the detection needs of thermal defect well, while being also the reason of other high pressure defect signal detections in compartment Think position, to decaying all very littles of ultrasonic signal, gas signal, photosignal etc., greatly improves for these defects Detection result.

If occurring small electric discharge in inside switch cabinet, it is mounted on the gas and ultrasonic sensing at hollow out position in shielding case Device can reliably detect and send out alarm signal under conditions of in shorter distance with rare block, and occur in defect Early detection failure simultaneously sends out alarm in time, to realize the monitoring of switchgear insulation defect, avoids the generation of accident.By surveying Examination comparison, after sonac takes this mounting means, the detection sensitivity of ultrasonic signal is at least than original mounting means Improve 100% -300%.Therefore, it for ultrasonic signal detection scheme, can only be examined in the past as the auxiliary of high-voltage partial discharge Survey means, after such technological improvement, it is entirely possible to become the basic detection means of switchgear high-voltage partial discharge.

And short circuit accident once occurs, it will generate arc light, be mounted on the photoelectric sensor at metallic shield hollow out position Since, since distance is very short and seldom blocks, sensitivity is obviously improved, so can go out in arc light between light source Existing early stage, arc light development are just delicately detected also in the starting stage, will detect this switch of Xin Chuan send Give at the first time The comprehensive control device of cabinet, measure and control device can send out tripping within the shortest time (＜ 4/1000 second) on the spot after judging Order and outlet signal, to prevent the expansion of accident from winning valuable cut off the power the time.That is by this metal The measure of photoelectric sensor is set in shielding case, equally but also the effect of photoelectricity trip protection technology is obviously improved.

Like this, the present invention is by the way that the technical measures of special metallic shield are arranged in each high pressure compartment privileged site, ingeniously It is difficult to solve to wonderful and almost Perfect the technology that high pressure defect of different nature is focused on and is detected at the same low-voltage Topic, to for further the monitoring centralized detecting of all kinds of defects of switchgear is laid a good foundation, with finally realize by switchgear this One traditional equipment is transformed into the target with self-monitoring, self diagnosis, the intelligent power supply equipment of self-protection, self-contr ol.

Further, a kind of switch cabinet comprehensive measure and control device is additionally provided at least 2 on the switch cabinet comprehensive measure and control device Road splitting or integrating brake cable loop current measure loop and/or at least No. 2 auxiliary switch actuating signal measure loops, current sensor seal in Breaker closing, switching winding circuit, or combined floodgate, switching winding circuit, current sense are inserted in using centre path current sensor Device is connected by conducting wire with the breaker closing of switchgear measure and control device, switching winding circuit, switchgear measure and control device it is auxiliary Switch actuating signals measure loop is helped then to be connected with the auxiliary switch of breaker by conducting wire.Pass through corresponding current sensor Detect breaker open operation, closing coil electric current.The auxiliary switch of breaker is detected by auxiliary switch actuating signal measure loop Actuating signal.

It is always to threaten switchgear that accident occurs in operation, due to mechanical breakdown for the breaker in switchgear also How safe major hidden danger finds that breaker mechanical defect that may be present is equally that electric field is badly in need of the weight solved in time Want problem.Although people also develop many on-Line Monitor Devices for being used for monitoring breaker mechanical property, these devices Structure it is generally excessively complicated, cost is excessively high and is difficult to popularize.And the requirement now for power supply is higher and higher, is impermissible for switching Cabinet is easily under the present situation of interruption maintenance, electric field compel to be essential it is a kind of simple in structure, accurate and reliable, can be simultaneously to number of drawbacks The on-Line Monitor Device being monitored checks the time of test to reduce to have a power failure.For this purpose, switch cabinet comprehensive of the present invention is surveyed Control device is provided with the monitoring function of breaker mechanic property.

The combined floodgate of breaker, separating brake action are all realized by starting splitting or integrating lock electromagnet.Due to electromagnetic induction Effect, electromagnet, due to the variation of armature position, will influence the variation of electromagnet coil current in turn in action process, That is there is a kind of correspondence in the position of armature with electromagnet coil current.In addition, switching on and off coil current is by auxiliary Switch is helped to be switched on and off, due to be between auxiliary switch and breaker by mechanical connection, therefore auxiliary switch with open circuit There are corresponding relationships for action between device, so, pass through the analysis to switching on and off coil current, it will be appreciated that electromagnet with And the bulk information of breaker actuation state, if breaker is possible to the waveform in coil current there are certain mechanical defects In reflect.This (invention) utilizes this principle, and closing coil all the way is arranged in the switch cabinet comprehensive measure and control device Current detection circuit, all the way switching winding current detection circuit.For example breaker causes actuation time partially long for various reasons, It will result in the waveform stretch of coil current and be found.

In addition combined floodgate, opening velocity are also the highly important technical parameter for reflecting breaker mechanical state, are needed closely Concern.Since there are corresponding relationships for the action between auxiliary switch and breaker, so when switching between two-way auxiliary switch Between length reflect the speed of breaker speed.For example the switching time of auxiliary switch lengthens the speed for necessarily corresponding to breaker Degree is partially slow.Based on this principle, at least 2 circuit breaker auxiliary switches action letter is additionally provided on the switch cabinet comprehensive measure and control device Number measure loop, by monitoring the variation of two auxiliary switch actuation times, to understand the variation of breaker actuation speed.

Further, the switchgear measure and control device be additionally provided at least 2 tunnels control circuit breaker trolley into and out of output switch parameter Circuit and/or output switch parameter circuit and/or at least 2 circuit breaker position switching on and off switch for having 2 tunnels control earthing operation Input circuit is measured, and/or has the work of at least 2 circuit breakers, testing position On-off signal circuit, and/or has at least 2 tunnels ground connection Knife splitting or integrating position switch amount input circuit, and/or there is at least 1 way switch cabinet rear panel to open On-off signal circuit, with control Handcart is operated into and out of vehicle and earthing switch switching on and off.

When being checked switchgear, being safeguarded, overhauled and tested, it is often necessary to circuit breaker cart to switchgear and The equipment such as earthing operated into and out of vehicle and opening and closing, and these operations need to carry out in strict accordance with established procedure, otherwise It is likely to result in major accident, so the operation of circuit breaker cart and earthing is a trouble and there may be security risks Operation.If that can greatly improve working efficiency using intelligent control, reduce security risk.Especially unattended operation transformer station Prevalence, with greater need for a kind of switchgear for having concurrently and capable of far controlling circuit breaker cart into and out of functions such as vehicles, convenient for management and dimension Shield reduces the time of power failure maintenance and inspection.

One or more technical solution provided by the present application, has at least the following technical effects or advantages：

Special metallic shield is arranged by the corresponding site in switchgear high pressure compartment in the present invention, compartment air themperature Sensor approaches the technical measures of ideal test position, overcomes the prior art well and mistake occurs to thermal defect monitoring result The problems such as accidentally and rejected region is difficult to judge has well solved the problem of area of low pressure monitors thermal defect.The present invention is simultaneously This metallic shield hollow out position is arrived into the various high pressure defect sensor settings of switchgear, dexterously solves the various height of switchgear The detection of pressure defect is difficult to be unified in the problem at one, and the thermal defect of high pressure part, the monitoring of insulation defect are all focused on this Low-voltage position is detected, and has both overcome the prior art well for the incorrect or even wrong of thermal defect monitoring appearance Disadvantage；Other high pressure defect inspection sensors difficult to install and the improper problem of installation site have been well solved simultaneously and have been shown Write the detection result improved for these defects.To various high pressure defect centralized detectings this industries once seemed it is distant not Can and hope become realistic plan.It is based on the breakthrough of this technical bottleneck, finally realizes a switchgear All kinds of defects monitoring and control be integrated into a unified intellectual monitoring administrative center --- switch cabinet comprehensive measure and control device In target, greatly simplifie the monitoring and control of switchgear, well solved various defect inspections and be difficult to take into account this Perplex the hard nut to crack of electric field for a long time.

This (invention) is realized by the above technical measures is not changing switchgear original structure and few resource as possible Under the premise of input, switchgear, this traditional power supply unit is transformed into one and has self-monitoring, self diagnosis, self prevents Shield, the intelligent power supply equipment of self-contr ol, to provide reliable guarantee for the demand of electric power for modern society.

Description of the drawings

Attached drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application Point, do not constitute the restriction to the embodiment of the present invention；

Fig. 1 is the internal structure schematic diagram of switchgear and the scheme of installation of shielding case；7,8,9,10 be respectively to switch The bus-bar room of cabinet, breaker chamber, cable vault, secondary chamber, 11 be measure and control device, 12,13,14 be respectively bus-bar room, breaker chamber, The indoor sensor of cable, 15-environment temperature sensors, 72 be busbar cross section, and 81 be breaker, and 91 be cable vault and mother Partition board between line room, 101 partition boards between breaker chamber and secondary chamber, 111,121,131 are metallic shield, 92- breakers Lower outlet, h between shielding case and 81 at a distance from, J between shielding case and 92 at a distance from；

Fig. 2 is 111 installation site diagrammatic cross-section of bus-bar room metallic shield, and 71 be bus-bar room head cover, and a is high voltage bus 72 between bus-bar room head cover 71 at a distance from；Distances of the b between two busbares；C between metallic shield 111 and bus-bar room head cover most Big distance；When l is on the vertical centerline position when 111 between the two-phase busbar 72, between busbar 72 at a distance from；

Fig. 3 a-c are the structural schematic diagram (cross-sectional) of different shape metallic shields；

Fig. 4 is switchgear top view and width direction center line schematic diagram；

Fig. 5 is section (vertical profile) schematic diagram of breaker chamber metallic shield 121 in embodiment；13- sensors, 112- Capouch, 122- connecting lines are shielded for Openworks shape；

Fig. 6 be embodiment median generatrix room, cable vault's metallic shield 111,131 section (vertical profile) schematic diagram；

Fig. 7 be the comprehensive control schematic device with number of drawbacks monitoring function, 11- switch cabinet comprehensive measure and control devices, 12,13,14,15-temperature sensor, 16,17-current sensors；18-gas sensors, 19-sonacs, 20- Photoelectric sensor, 21,22-breaker coil current sensors, 23,24-auxiliary switch signal circuits, 25,26,27,28： 1-4DO output loops, 29,30,31,32,33,34,35：1-7DI input circuits.

Specific implementation mode

The present invention provides a kind of high-tension switch cabinets with thermal defect detection and insulation defect monitoring function, to overcome The deficiencies in the prior art.This programme dexterously solves high pressure defect of different nature to focus at the same low-voltage and detects Technical barrier, to for the monitoring centralized detecting of all kinds of defects of switchgear is laid a good foundation, and finally by switchgear this Traditional power supply unit is transformed into an intelligent power supply with self-monitoring, self diagnosis, self-protection, self-contr ol and sets It is standby.

To better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's Feature in embodiment and embodiment can be combined with each other.

Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also Implemented with being different from the other modes being described herein in range using other, therefore, protection scope of the present invention is not by under The limitation of specific embodiment disclosed in face.

- Fig. 7 is please referred to Fig.1, this application provides embodiment 1, the present embodiment is the high pressure with thermal defect monitoring function Switchgear, including：Switch cabinet body, the metallic shield 111,121,131 being set in switchgear in each high pressure compartment setting In on switchgear secondary chamber panel comprehensive control device 11 and a few part institutes such as 4 temperature sensors, 2 current sensors Composition.

Wherein, in cable vault, directed downwardly be provided on one side of partition board between its cable vault and bus-bar room passes for installing The elongated metal shielding case 131 of sensor, the height that the minimum range J which is between outlet under breaker is 13 centimetres On degree, to ensure the insulation of itself and electrification in high voltage position, the entire width of the length penetrating switch cabinet of the metallic shield.Simultaneously On the position of 0-7 centimetres of the center line against breaker B phase outlets, which is made into local hollow out, hollow out length is not less than 5 centimetres；In its breaker chamber, the elongated metal shielding case for installing sensor is provided with above breaker 121, the shielding case laid along secondary chamber's partition board and extend to positioned at away from the height h at the top of breaker be 13 centimeters, and Its end has installed the hollow out section 112 of one section of 3 centimeter length for installing sensor additional, this hollow out section is in breaker B phases Near heart line on 0-7 centimetres of position, and this hollow out section end is spheric, and radius of curvature is 1 centimetre；In its bus-bar room Inside of top cover along with busbar parallel direction and in the vertical centerline being located at a distance from below cover board between two-phase busbar The elongated metal shielding case 111 for installing sensor is provided on 0 to 3 centimetre of position, which has traversed switch The entire width direction of cabinet, and be in 0 to 5 centimeters of center line of range switch cabinet width direction, i.e. in the length of shielding case The length of the wide place part hollow out of 1/2 cabinet, hollow out section is 5 centimetres.The cross section of the metallic shield of each compartment is in this example Semicircle, radius of curvature are 1 centimetre.It is provided with 4 tunnels on the comprehensive control device 11 being set on switchgear secondary chamber panel Air themperature measure loop, 2 road current detection circuits, wherein 1 tunnel air themperature measure loop is for the ring outside detection switch cabinet The air themperature of border temperature, remaining 3 tunnel air themperature measure loop for each compartment in detection switch cabinet, current detection circuit are used In detection switch cabinet load current.Temperature sensor 12,13,14 in switchgear is mounted on the hollow out of each compartment metallic shield Position is connected by connecting line temperature detection corresponding with measure and control device circuit.Current sensor 16,17 is arranged two Secondary interior is in series with the secondary circuit of current transformer and is connected with the current detection circuit of measure and control device by connecting line, System is monitored to constitute switchgear thermal defect..Here it is because the load in switchgear is to select two current sensors Three-phase system, the three-phase current of switchgear is unbalanced in general, and a current sensor is difficult to accurately reflect and open The load current for closing cabinet, so this programme uses two current sensors, with the two-way load current of detection switch cabinet, finally Obtain the average value of switchgear three-phase load electric current.This is because in three-phase system, can to the size of wherein biphase current and Phase obtains the size of third phase current by Vector operation, finally obtains the average value of three-phase load electric current, no longer superfluous here It states.

In the initial operation stage of switchgear, measure and control device 11 or monitoring backstage arrange into the data such as the temperature and electric current detected One tables of data, to this tables of data further using Mathematical Fitting method obtain certain compartment air themperature or Wen Sheng it is opposite In load current and the mathematic(al) representation of adjacent compartments temperature change, the reflection of this expression formula is exactly switchgear initial operation stage Temperature and the related factors such as load current and adjacent compartments temperature change rule, corresponding is switchgear just Beginning state.For the temperature and current data detected, measure and control device 11 can also Chuan send Give upper level monitoring backstages, using more It is analyzed for powerful Computer aided analysis.

It is illustrated by taking the measured data of certain compartment as an example below.In switchgear initial operation stage, measure and control device 11 or upper one Grade monitoring backstage according to receive environment temperature, each compartment temperatures, the data such as temperature, the load current of adjacent cabinet adjacent compartments it is simple It is obtained after single processing such as next group of tables of data (current unit is kilo-ampere here)：

Temperature and Wen Sheng and electric current or current squaring are the different expression ways of same physical quantitiess.Due to compartment temperature Liter=compartment temperatures-environment temperature, temperature, which rises, has actually contained environment temperature for dependent variable i.e. this compartment temperature in parameter The influence risen, the expression formula generated have reflected the influence of environmental factor, so not environment temperature in this example application It is with load current square Come reflection current parameters here equally as individual variable.

Next using this compartment Wen Sheng as dependent variable, remaining parameter carries out Mathematical Fitting operation as independent variable, Corresponding coefficient a=1.43, b=1.48, c=1.87, d=-3.37 of these variables are obtained, rises T's to obtain this compartment temperature About using these parameters as the expression formula of independent variable：

The right adjacent compartment Wen Sheng+1.87* load currents square of the left neighbour compartment Wen Sheng+1.48* of T=1.43*.

This expression formula is corresponding be switchgear this compartment initial operation stage fever rule.In the operational process in later stage, Constantly measured relevant parameter is substituted into expression formula, calculates the temperature or temperature rise value of this compartment with this condition, than Such as when the temperature of left adjacent compartment be upgraded to 7.1 DEG C, the temperature of left adjacent compartment be upgraded to 5.3 DEG C, this cabinet load current be 760A, substituted into table Up to formula calculate it is warm be upgraded to 5.9 DEG C, and actual test value is 9.1 DEG C, 9.1-5.9=3.2 DEG C, if pre-set maximum allowable D=2.5 DEG C of value then illustrates that the state of switchgear has apparent deterioration than original state, is overhauled.

The model Pt100 that temperature sensor is selected in the present embodiment, current sensor are metal film precision resistance.

Embodiment 2.

The present embodiment 2 and the structure of embodiment 1 are essentially identical, the difference is that measure and control device 11 is additionally provided with 3 road gases 3 tunnel ultrasound detection circuit of measure loop, 3 tunnel Photoelectric Detection circuits and corresponding sensor；Also 2 circuit breaker coil currents are examined Survey time road and current sensor；No. 2 auxiliary switch actuating signal measure loops；The measure and control device 11 is additionally provided with the control open circuit of 2 tunnels Device handcart into and out of output switch parameter circuit 1DO, 2DO；2 tunnels control earthing operation output switch parameter circuit 3DO, 4DO with And 2 circuit breaker position switching on and off On-off signal circuit 1DI, 2DI, the work of 2 circuit breakers, testing position On-off signal Circuit 3DI, 4DI, 2 road earthing splitting or integrating position switch amount input circuit 5DI, 6DI, the stroke that 1 way switch cabinet rear panel is opened Switches amount input circuit 7DI, to constitute Lu Yitai with thermal defect, insulation defect, mechanical defect monitoring function and High-tension switch cabinet of the remote-control circuit breaker trolley into and out of functions such as vehicle operations.

Gas, ultrasound and photoelectric sensor 18,19,20 be separately mounted to each high pressure compartment metallic shield 111,121, 131 hollow out position, each sensor are connected by connecting line measure loop corresponding to measure and control device 11.Detect breaker The sensor 21,22 and the switching on and off wire loop of breaker of switching on and off coil current are in series, and pass through connecting line and survey The breaker coil current detection circuit of control device is connected.In addition, will close a floodgate for connection on auxiliary switch for circuit breaker, separating brake The contact of coil, traditionally referred to as the signal of the contact a, b passes through the auxiliary switch actuating signal on connecting line and measure and control device 11 Measure loop 23,24 is connected.

Measure and control device 11 control circuit breaker trolley into and out of output switch parameter circuit 1DO, 2DO and breaker chamber in hand Motor control loop connection on underbody jiggering, with control circuit breaker cart into and out of vehicle.3,4DO is that earthing switch operation is defeated Go out, 3,4DO is connected with the motor control loop of earthing in cable vault.Intake (On-off signal circuit)：1,2DI is to refer to The signal input circuit for showing breaker splitting or integrating gate position is connect with the breaker splitting or integrating gate position contact of auxiliary switch；3、4DI For circuit breaker position signal input circuit, respectively with the travel switch of breaker operating position, testing position in breaker chamber Be connected, 5,6DI be earthing position signal input circuit, opened respectively with the combined floodgate of earthing, open position stroke in cable vault Pass is connected；7DI is rear door position signal input circuit, is connected with the position travel switch at back door.

In switchgear operational process, if ozone sensor 18 and sonac 19 all detect signal and Chuan send Give Measure and control device, measure and control device 11 can determine whether have electric discharge phenomena to occur there are insulation defect and send out alarm accordingly；If only There are ultrasonic signal or ozone signal that wouldn't then alarm, avoids reporting by mistake.And short circuit accident once occurs, it will generate strong arc Light, and the development of arc light grows from weak to strong there are extremely short process, due to each shielding case hollow out position actually as far as possible Monitored high voltage device is approached, the photoelectric sensor 20 being disposed therein can be early stage arc light just starts to occur very Xin Chuan send this switch cabinet comprehensive of the Give measure and control device 11 that delicately detects, and will directly be detected by measure loop is surveyed Control device 11 can send out trip signal and outlet signal within the shortest time (＜ 4/1000 second) on the spot after judging, and be Prevent the expansion of accident from trying to gain time precious to one.

Breaker close a floodgate or when sub-switching operation, be connected on combined floodgate, switching winding circuit current sensor 21,22 By current signal Chuan send Give measure and control devices 11, while its actuating signal is also passed through connecting line Chuan send Give measure and control devices by auxiliary switch 11, measure and control device 11 stores these signals, and staff periodically recalls these information simultaneously in the case where not having a power failure It is analyzed, to understand breaker machine performance information exposed in action process.Such as when closing a floodgate, electromagnet rank There is bite in iron, and at this moment the closing speed of breaker does not change, and shows the contacts auxiliary switch a between the contacts b Conversion time does not change, but the waveform of corresponding site will change and be sent out in the current waveform of closing coil It is existing, and provide foundation for maintenance.

Measure and control device 11 is carried out to equipment such as circuit breaker cart and earthings into and out of vehicle and opening and closing control operation When, it will be carried out according to the program of software programming, to the security risk for avoiding manual operation error tape from.For example, measure and control device 11 obtain circuit breaker trolley when going out vehicle operational order, and measure and control device can check automatically to be held into signal circuit 1,2DI to determine open circuit Device whether be in open position, only when breaker be in open position, carry out out vehicle operate be only it is safe.Conversely, such as Fruit breaker is in "on" position and goes out vehicle, it will leads to serious short circuit accident.Measure and control device 11 confirms that breaker is in separating brake State and without when instruct into vehicle, output switch parameter circuit 2DO connection chassis vehicle motor control loops, circuit breaker trolley is from switchgear It exits.For other operations, measure and control device is also to be carried out in strict accordance with preset program, so very safe and efficient.This Sample, switchgear are transformed to the intelligent power supply equipment with self-monitoring, self diagnosis, self-protection, self-contr ol, and At this moment switchgear measure and control device is also no longer the measuring apparatus of original traditional control and electrical parameter, but collects various The integrative intelligent management system of the Comprehensive Control of the detecting of parameter, the monitoring of various defects and switchgear.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of high-tension switch cabinet with defect inspection and integrated control functions, which is characterized in that high-tension switch cabinet includes each Compartment and the comprehensive control device for being installed on secondary chamber, in switchgear cable vault, between its cable vault and bus-bar room every The first metallic shield for installing sensor is provided on plate, the first predetermined fraction of the first metallic shield is located at away from disconnected The height J of 10-40 centimetres of outlet under the device of road, and on the position of 0-15 centimetres of the center line against breaker B phase outlets, and The part of at least the first predetermined fraction is by hollow out.

2. the high-tension switch cabinet according to claim 1 with defect inspection and integrated control functions, which is characterized in that In breaker of switch cabinet room, the second metallic shield for installing sensor, the second gold medal are provided with above breaker It is 10-40 centimeters that second predetermined fraction of category shielding case, which is located at away from the height h at the top of breaker, and in breaker B phases On the position of 0-10 centimetres of center line, and at least the second predetermined fraction has part by hollow out.

3. the high-tension switch cabinet according to claim 1 with defect inspection and integrated control functions, which is characterized in that The inside of top cover of switch cabinet bus room is along the third gold for being provided with the strip for installing sensor with busbar parallel direction Belong to shielding case, which is located on the position of 0 to 4 centimetre of vertical centerline between the two-phase busbar below cover board, The third predetermined fraction of the shielding case is located at 0 to 20 centimeters of center line of range switch cabinet width direction, and at least third Predetermined fraction has part by hollow out.

4. the high-tension switch cabinet with defect inspection and integrated control functions according to claim 1-3, which is characterized in that Switchgear respectively every the radius of curvature of the metallic shield of indoor location be 3-40 millimeters.

5. the high-tension switch cabinet with defect inspection and integrated control functions according to claim 1-3, which is characterized in that In switchgear respectively every in indoor shielding case hollow out position and/or being equipped with temperature sensor and/or sonac and/or gas Body sensor and/or photoelectric sensor.

6. the high-tension switch cabinet with defect inspection and integrated control functions according to claim 1-3, which is characterized in that At least 4 tunnel air themperature measure loops, 1 road current detection circuit are provided on switchgear measure and control device, wherein 1 tunnel air themperature Measure loop is used for each in detection switch cabinet for the environment temperature outside detection switch cabinet, remaining 3 tunnel air themperature measure loop The air themperature of compartment, current detection circuit are used for detection switch cabinet load current, and the air temperature sensor of each compartment is installed In the hollow out position of the shielding case, current sensor be mounted on secondary loop of mutual inductor on, each temperature sensor with And current sensor is connected by conducting wire with the corresponding circuit of measure and control device.

7. the high-tension switch cabinet with defect inspection and integrated control functions according to claim 1-3, which is characterized in that On switchgear measure and control device and/or it is provided at least 1 tunnel ultrasound detection circuit, and/or at least 1 tunnel gas detection circuit, and/or At least 1 tunnel Photoelectric Detection circuit, corresponding ultrasound, gas, photoelectric sensor are then respectively arranged at engraving for aforementioned metal shielding case Empty position, and be connected with the corresponding circuit of switchgear measure and control device by conducting wire.

8. the high-tension switch cabinet with defect inspection and integrated control functions according to claim 1-3, which is characterized in that At least 2 tunnel splitting or integrating brake cable loop current measure loops, and/or at least No. 2 auxiliary switch actions are provided on switchgear measure and control device Signal detection circuit, current sensor seals in breaker closing, switching winding circuit, or is inserted in using centre path current sensor It closes a floodgate, switching winding circuit, current sensor passes through the breaker closing of conducting wire and switchgear measure and control device, switching winding circuit It is connected, the auxiliary switch actuating signal measure loop of switchgear measure and control device then passes through the auxiliary switch phase of conducting wire and breaker Connection.

9. the high-tension switch cabinet with defect inspection and integrated control functions according to claim 1-3, which is characterized in that Switchgear measure and control device be additionally provided at least 2 tunnels control circuit breaker trolley into and out of output switch parameter circuit and/or have 2 tunnels control The output switch parameter circuit and/or at least 2 circuit breaker position switching on and off On-off signal circuits of earthing operation, and/or have The work of at least 2 circuit breakers, testing position On-off signal circuit, and/or have at least 2 road earthing splitting or integrating position switch amounts Input circuit, and/or there is at least 1 way switch cabinet rear panel to open On-off signal circuit.