CN103743977B - The high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment - Google Patents
The high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment Download PDFInfo
- Publication number
- CN103743977B CN103743977B CN201410003994.2A CN201410003994A CN103743977B CN 103743977 B CN103743977 B CN 103743977B CN 201410003994 A CN201410003994 A CN 201410003994A CN 103743977 B CN103743977 B CN 103743977B
- Authority
- CN
- China
- Prior art keywords
- flow
- pressure regulator
- current
- switch
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012795 verification Methods 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 238000004804 winding Methods 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 229910000897 Babbitt (metal) Inorganic materials 0.000 claims abstract description 4
- 230000006641 stabilisation Effects 0.000 claims description 11
- 238000011105 stabilization Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 abstract description 28
- 230000005684 electric field Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 238000011156 evaluation Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 description 14
- 230000033228 biological regulation Effects 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- DYDCUQKUCUHJBH-REOHCLBHSA-N L-Cycloserine Chemical compound N[C@H]1CONC1=O DYDCUQKUCUHJBH-REOHCLBHSA-N 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
A high-voltage large current associating temperature rise verification platform for equipotential temperature measuring equipment, boosting pressure regulator and step-up transformer are placed on the ground and shell ground connection respectively, and the high pressure winding of step-up transformer is provided with tap; The insulation column bearing metal table top of insulated platform; Up-flow pressure regulator and current lifting device are placed on metal table top and shell is connected respectively to metal table top; Power supply is connected to the input end of boosting pressure regulator, and the output terminal of boosting pressure regulator is connected to the input end of step-up transformer; The high-voltage output end of step-up transformer is connected to the input end of up-flow pressure regulator, and tap is connected to metal table top; The output terminal of up-flow pressure regulator is connected to the input end of current lifting device, and the output terminal of current lifting device is connected to high-voltage electrical equipment.The invention enables under the strong electric field environment of high-voltage large current is adopted with checking to the evaluation and test of equipotential temperature measuring equipment and carry out, closer to actual operating mode; Up-flow part adopts insulated platform supporting methods that cost and volume weight are reduced greatly.
Description
Technical field
The present invention relates to power system device test platform, is specifically a kind of high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment.
Background technology
Electric system high-voltage electrical equipment, particularly high-tension switch cabinet, in Substation Station using electricity system and distribution network system, play a part to ensure that substation safety runs and people's normal life.Along with society, economic development, power load is growing, and electric system scale constantly expands, increasing high-tension switch cabinet put into operation and long-term work in high-temperature high-load environment.Due to directly related with power supply, the economic loss that high voltage switch cabinet fault causes power outage to bring and social loss very huge, therefore, improving high-tension switch cabinet safety operation level, is the importance ensureing power grid security.In recent years, metal armouring high-tension switch cabinet over-heat inside fault occurs repeatedly.Although up to now, the multiple temp measuring method based on different principle has been developed in each field, and its thermometric effect, temperature-measuring range, applied environment and application conditions are different.Because metal armouring causes cabinet monitoring internal temperature difficulty, therefore arisen the equipotential temperature measuring equipment of many Wireless Data Transmission modes, can carry out overheated monitoring to the current loop of electric system middle/high-voltage electrical appliance equipment.Relative to other High-Voltage Electrical Appliances and power transmission and transforming equipment, switch cubicle electric pressure is lower, but its inner space is narrow and small, part is various, complex structure, insulation distance are limited, therefore easilier than other high-voltage electrical equipment occurs insulation fault.And the higher temperature of inside switch cabinet and complicated Electric Field Distribution, be also difficult to estimate on the impact of equipotential temperature measuring equipment self-operating.For this reason, to the temperature measurement on-line device being arranged on switch cabinet body inside, be extremely necessary that the performance after installing it is evaluated and tested, conscientiously ensure the validity of high-tension switch cabinet temperature measurement on-line and even the safety operation level of switch cubicle.But, also lack standard or the specification of equipotential temperature measuring equipment product at present.In order to ensure the normal operation of not impact to voltage switch cubicle after the assembling of equipotential temperature measuring equipment, be necessary examination or the checking of this series products being carried out under the electric field situation of high-voltage great-current to temperature monitoring performance, this is also the means of unique feasible under existence conditions.And general strong current generator adopts low pressure up-flow mode, by the restriction of insulating material and manufacturing process, there is no at present can boost simultaneously, the test platform of up-flow, there is no corresponding validation test method yet.
Summary of the invention
The object of this invention is to provide a kind of high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment, for carrying out Performance Assessment or checking to equipotential temperature measuring equipment.
The technical scheme realizing the object of the invention is as follows: a kind of high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment, boosting pressure regulator and step-up transformer are placed on the ground and shell ground connection respectively, and the high pressure winding of step-up transformer is provided with tap; Insulated platform comprises metal table top and insulation column, insulation column bearing metal table top; Up-flow pressure regulator and current lifting device are placed on metal table top and shell is connected respectively to metal table top; Power supply is connected to the input end of boosting pressure regulator, and the output terminal of boosting pressure regulator is connected to the input end of step-up transformer; The high-voltage output end of step-up transformer is connected to the input end of up-flow pressure regulator, and tap is connected to metal table top; The output terminal of up-flow pressure regulator is connected to the input end of current lifting device, and the output terminal of current lifting device is connected to the high-voltage electrical equipment that equipotential temperature measuring equipment is monitored; Boosting pressure regulator comprises booster and booster control circuit, and booster is connected to booster control circuit, and booster control circuit is connected to control desk; Up-flow pressure regulator comprises up-flow motor and up-flow circuit for controlling motor, and up-flow motor is connected to up-flow circuit for controlling motor, and up-flow circuit for controlling motor is connected to control desk by isolator.
Wherein, the surrounding of the metal table top of described insulated platform is provided with grading ring; The model of described step-up transformer is LTSB-25/375-(C) 0.25; Current lifting device model is TYL-15.
Further, described isolator comprises wireless launcher and wireless receiver; Control desk is connected to wireless launcher, and wireless launcher is connected to wireless receiver by wireless channel, and wireless receiver is connected to up-flow circuit for controlling motor.
Further, described isolator comprises optical transmitting set and optical receiver; Control desk is connected to optical transmitting set, and optical transmitting set is by Fiber connection to optical receiver, and optical receiver is connected to up-flow circuit for controlling motor.
Further, described up-flow circuit for controlling motor is made up of series stabilized current circuit after up-flow circuit is in parallel with falling current circuit; Described up-flow circuit by after the normally opened contact of up-flow electromagnetic switch SL and the second normally opened contact KM1-2 parallel connection of the first relay K M1, then with fall the normally closed contact, the normally closed contact of the second relay K M2, the coils connected in series of high limit switch XW1 and the first relay K M1 that flow electromagnetic switch JL and form; Fall current circuit by after falling the stream normally opened contact of electromagnetic switch JL and the second normally opened contact KM2-2 parallel connection of the second relay K M2, then form with the normally closed contact of up-flow electromagnetic switch SL, the normally closed contact of the first relay K M1, the coils connected in series of low limit switch XW2 and the second relay K M2; Current stabilization circuit by the normally closed contact of fuse R3, current stabilization electromagnetic switch WL and the normally closed contact of the first electrothermal relay FR1 in series; Described up-flow electromagnetic switch SL, fall stream electromagnetic switch JL and current stabilization electromagnetic switch WL control end be connected respectively to wireless receiver; The first normally opened contact KM1-1 of the first relay K M1 is connected in the rotating forward loop of up-flow motor, and the first normally opened contact KM2-1 of the second relay K M2 is connected in the reversion loop of up-flow motor.
Preferably, power supply input switch K1 is also provided with between the input end of power supply and boosting pressure regulator, also be provided with High voltage output K switch 2 between the output terminal of boosting pressure regulator and the input end of step-up transformer, the control end of power supply input switch K1 and High voltage output K switch 2 is connected respectively to control desk; Also be provided with up-flow input switch K3 between the high-voltage output end of step-up transformer and the input end of up-flow pressure regulator, up-flow input switch K3 is made up of the first normally opened contact J3-1 of the 3rd relay J 3; After the second normally opened contact J3-2 of up-flow input switch control circuit by the normally opened contact of the electromagnetic switch QD that closes a floodgate the 3rd relay J 3 in parallel, then form after connecting with the normally closed contact of separating brake electromagnetic switch ST, the coil of the 3rd relay J 3 and fuse R1; The control end of combined floodgate electromagnetic switch QD and separating brake electromagnetic switch ST is connected respectively to wireless receiver.
The invention has the beneficial effects as follows: carry out under the strong electric field environment of high-voltage large current is adopted to evaluation and test and the checking of equipotential temperature measuring equipment, closer to actual operating mode, avoid the shortcoming of limitation and the operating mode that loses contact with reality only evaluated and tested with high voltage or big current.Up-flow part does not carry out the process of reinforced insulation materials and process, and adopts insulated platform supporting methods that cost and volume weight are reduced greatly.
Accompanying drawing explanation
Fig. 1 is the mounting structure figure of platform.
Fig. 2 is electrical schematic diagram.
Fig. 3 is up-flow circuit for controlling motor and up-flow input switch control circuit schematic diagram.
Fig. 4 is the vertical view of metal table top.
Fig. 5 is the A-A cut-open view of metal table top.
Wherein, 1-insulated platform, 2-insulation column, the high-voltage electrical equipment that 3-equipotential temperature measuring equipment is monitored, 4-control desk, 5-wireless launcher, 6-wireless receiver, 7-up-flow circuit for controlling motor and up-flow input switch control circuit, 8-metal table top, 9-grading ring.
Embodiment
Mentality of designing of the present invention is:
1) in the number of turn of the high-end extraction some of the high pressure winding of step-up transformer, make this part when whole winding output voltage reaches the specified operation phase voltage of having installed device for detecting temperature equipment, provide 250V voltage and deliver to current lifting device through pressure regulator, make current lifting device output current to the current value needed by Voltage Cortrol, realize the verification experimental verification condition of high-voltage large current.
2) because current lifting device is low-voltage up-flow mode, its integral insulation level cannot bear action of high voltage, so adopt insulated platform to support strong current generator part, up-flow pressure regulation part adopts wireless or Optical Fiber Transmission control signal, Secure isolation high voltage, makes control and operating personnel obtain safety guarantee.
3) voltage, electric current reach checking require time, the devices function situation of test equipotential temperature measuring equipment, by ultraviolet photon instrument or electric field intensity test probe, the electric field distortion degree that temperature measuring equipment causes is tested, electric field distortion do not reach clearance electric discharge, puncture degree time, contrast temperature measuring equipment data and temperature rise test device temperature measured value, obtain relative error for test and appraisal.
4) to the electric equipment being provided with checking of need testing and assessing--as high-tension switch cabinet, adopting this platform to adjust voltage and current makes it reach the expection requirement of verification condition, by manual simulation's switch cubicle accidental conditions and all kinds of overheating fault situation such as current loop " contact slap ", " disconnector closes a floodgate not in place ", carry out evaluating and testing to the Monitoring Performance of the In-Line Temperature Measure System of each producer and the analysis management software on backstage again and verify, finally obtaining the comprehensive evaluation result of this In-Line Temperature Measure System.
Concrete embodiment is as follows:
As shown in Figure 1 and Figure 2, boosting pressure regulator T1 and step-up transformer B1 places on the ground and shell ground connection respectively, and the high pressure winding of step-up transformer B1 is provided with tap; Insulated platform 1 comprises metal table top 8 and insulation column 2, insulation column 2 bearing metal table top 8; Up-flow pressure regulator T2 and current lifting device B2 is placed on metal table top 8 and shell is connected respectively to metal table top 8; Power supply is connected to the input end of boosting pressure regulator T1, and the output terminal of boosting pressure regulator T1 is connected to the input end of step-up transformer B1; The high-voltage output end of step-up transformer B2 is connected to the input end of up-flow pressure regulator T2, and tap is connected to metal table top 8; The output terminal of up-flow pressure regulator T2 is connected to the input end of current lifting device B2, and the output terminal of current lifting device B2 is connected to the high-voltage electrical equipment 3 that equipotential temperature measuring equipment is monitored; Boosting pressure regulator T1 comprises booster M1 and booster control circuit, and booster M2 is connected to booster control circuit, and booster control circuit is connected to control desk 4; Up-flow pressure regulator T2 comprises up-flow motor M 2 and up-flow circuit for controlling motor, and up-flow motor M 2 is connected to up-flow circuit for controlling motor, and up-flow circuit for controlling motor is connected to control desk 4 by isolator.
In technique scheme, because up-flow channel floor is in noble potential, personnel cannot local operation, must transmit operation, control command, to complete the adjustment of demonstration test electric current by isolator.Isolator can adopt wireless transmission method, also can adopt Fiber connection.The isolator of wireless connections is adopted to comprise wireless launcher 5 and wireless receiver 6; Control desk 4 is connected to wireless launcher 5, and wireless launcher 5 is connected to wireless receiver 6 by wireless channel, and wireless receiver 6 is connected to up-flow circuit for controlling motor.The isolator of Fiber connection is adopted to comprise optical transmitting set and optical receiver; Control desk is connected to optical transmitting set, and optical transmitting set is by Fiber connection to optical receiver, and optical receiver is connected to up-flow circuit for controlling motor.Wireless launcher and wireless receiver, and optical transmitting set and optical receiver, have very ripe product, as long as can transmit operation, the product of control command all can select.Control desk, provides operation, control, measurement, defencive function during for carrying out verification operation, also has ripe product available.
Fig. 3 shows a kind of principle of up-flow circuit for controlling motor.Up-flow circuit for controlling motor is made up of series stabilized current circuit after up-flow circuit is in parallel with falling current circuit; Up-flow circuit by after the normally opened contact of up-flow electromagnetic switch SL and the second normally opened contact KM1-2 parallel connection of the first relay K M1, then with fall the normally closed contact, the normally closed contact of the second relay K M2, the coils connected in series of high limit switch XW1 and the first relay K M1 that flow electromagnetic switch JL and form; Fall current circuit by after falling the stream normally opened contact of electromagnetic switch JL and the second normally opened contact KM2-2 parallel connection of the second relay K M2, then form with the normally closed contact of up-flow electromagnetic switch SL, the normally closed contact of the first relay K M1, the coils connected in series of low limit switch XW2 and the second relay K M2; Current stabilization circuit by the normally closed contact of fuse R3, current stabilization electromagnetic switch WL and the normally closed contact of the first electrothermal relay FR1 in series; Described up-flow electromagnetic switch SL, fall stream electromagnetic switch JL and current stabilization electromagnetic switch WL control end be connected respectively to wireless receiver; The first normally opened contact KM1-1 of the first relay K M1 is connected in the rotating forward loop of up-flow motor, and the first normally opened contact KM2-1 of the second relay K M2 is connected in the reversion loop of up-flow motor.
Booster control circuit adopts and the duplicate setting of up-flow circuit for controlling motor.Booster control circuit does not need to be directly connected to control desk by isolator, therefore can carry out some and simplify to reduce costs.Such as, the various electromagnetic switch in above-mentioned up-flow circuit for controlling motor are replaced to non-electromagnetic switch.
Because verification platform needs progressively to complete boosting and up-flow in operation, be therefore also provided with switch to control the output of high-voltage large current and to protect.As Fig. 3, power supply input switch K1 is also provided with between the input end of power supply and boosting pressure regulator, also be provided with High voltage output K switch 2 between the output terminal of boosting pressure regulator and the input end of step-up transformer, the control end of power supply input switch K1 and High voltage output K switch 2 is connected respectively to control desk; Also be provided with up-flow input switch K3 between the high-voltage output end of step-up transformer and the input end of up-flow pressure regulator, up-flow input switch K3 is made up of the first normally opened contact J3-1 of the 3rd relay J 3; After the second normally opened contact J3-2 of up-flow input switch control circuit by the normally opened contact of the electromagnetic switch QD that closes a floodgate the 3rd relay J 3 in parallel, more in series with the normally closed contact of separating brake electromagnetic switch ST, the coil of the 3rd relay J 3 and fuse R1; The control end of combined floodgate electromagnetic switch QD and separating brake electromagnetic switch ST is connected respectively to wireless receiver.
Insulated platform is made up of, as Fig. 1 metal table top and insulation column.Insulation column determines with weight (having plenty of integrated) according to current lifting device and up-flow pressure regulator volume, and the weight of equipment that the present invention adopts is between 160kg to 200kg, and metal platform area is about 2000mm × 1200mm, thoroughly does away with edge pillar supporting by 8.Insulation column and air distance make metal table top reach trial voltage insulating requirements with the earth, can bear demonstration test voltage.(150mm is not less than for 12kV grade high-voltage electrical equipment at guarantee insulated platform metal table top and distance such as the air between ground, high-voltage electrical equipment etc., 40.5kV grade tested device is not less than 350mm) require after, make the up-flow channel floor insulation against ground resistance R be placed on insulated platform
preach the high-voltage electrical equipment dielectric level installing measured product, but up-flow part is still considered by low-voltage dielectric level, only by control operation part wirelessly or Fiber connection, to reach high and low potential isolation, the safety of operating personnel and relevant device has been ensured.In addition, as shown in Figure 4, Figure 5, also be provided with grading ring, grading ring is made up of metal semi-circular tube, around being welded on metal table top surrounding, to improve the local distortion at these highfield positions, strengthen platform insulation and reduce power loss, reducing power consumption and make the volume and weight of whole platform be convenient to move and install.
Each several part principle of the present invention is as follows: the boosting winding of boosting part provides corresponding and run phase voltage V3 by what install equipotential temperature measuring equipment by thermometric electric equipment, and voltage is applied on insulated platform metal table top.Take out pressure winding be the big current current lifting device on insulated platform and its control, protection, etc. power supply V4 is provided.The control desk simultaneously configured can provide the operation of platform, control, measurement, defencive function, and reaches demonstration test voltage request by adjustment boosting pressure regulator T1.
Up-flow pressure regulator and current lifting device are placed on insulated platform, phase voltage V3 is run because metal table top is in electric equipment, make it be reached working voltage by the big current loop of thermometric electric equipment, then make to be reached its rated current and demonstration test current requirements by the current return of thermometric electric equipment by the output current of strong current generator.Because high voltage is provided by part of boosting, so the exit potential only several volts (exit potential during 3000A is about 5V) when strong current generator exports big current, but high-voltage state when the voltage-to-ground being applied to the high-voltage electrical equipment current return installing measured product has reached equipment actual motion.Because up-flow channel floor is in noble potential, personnel cannot local operation, its operation, controls the adjustment being completed demonstration test electric current by wireless (or adopting other isolated controlling measures) mode.Concrete grammar is made up of the normally opened contact of relay J 3 by the up-flow input switch K3 of up-flow part, distant place reclosing command converts wireless pulses to electric pulse by wireless receiver R/L-CS makes electromagnetic switch QD action close, the charged general supply that completes of J3 closing coil is closed a floodgate, and realizes combined floodgate self-sustaining by J3 auxiliary contact.When completing cranking test or need emergency opening up-flow part general supply, in like manner, distant place separating brake instruction converts wireless pulses to electric pulse by wireless receiver R/L-CS makes electromagnetic switch ST action be separated, and J3 closing coil dead electricity completes general supply separating brake.The ascending, descending of electric current realizes the ascending, descending of current lifting device input voltage by controlling pressure regulator T2, and the ascending, descending of pressure regulator T2 output voltage drives turbine ratch to carry out Voltage Cortrol by the forward and backward of motor.When up-flow electromagnetic switch SL receive closing pulse action close time, motor rotates forward and pressure regulator T2 output voltage is improved constantly, current lifting device output current constantly increases, when reaching required electric current, sending current stabilization closing pulse makes electromagnetic switch WL action be separated, namely motor does not rotate, and pressure regulator T2 keeps output voltage constant, makes current lifting device keep constant High-current output to carry out demonstration test.When reducing current lifting device output current, electromagnetic switch JL only need be made to receive closing pulse action and close, motor reversal makes pressure regulator T2 output voltage constantly reduce, and current lifting device output current also constantly reduces.If stop electric current to decline, only need send current stabilization closing pulse and electromagnetic switch WL action is separated, current flow can be kept constant.When pressure regulation turbine ratch touches limit switch XW2, motor stalls, current lifting device stops electric current exporting.Up-flow part possesses motor overload protection FR, and pressure regulation turbine ratch height limit switch WX1 and low limit switch XW2 protects pressure regulator T2 to avoid physical damage, and interlocking auxiliary contact KM1 and KM2 avoids the maloperation simultaneously carrying out forward and backward.
During use, 250V power input voltage is applied to step-up transformer B1 winding by boosting pressure regulator T1 by boosting part, Secondary Winding adopts tap mode to press winding to form by the winding that boosts with taking out, while low pressure is risen to the high-voltage electrical equipment rating operating voltage V3 installing measured product by boosting winding, take out pressure winding output voltage V4 to up-flow part.
Up-flow part will take out pressure winding output voltage V4(250V) be used as power input voltage and be applied to current lifting device B2 winding by up-flow pressure regulator T2, Secondary Winding exports the rated current of big current to the high-voltage electrical equipment rated current or 1.1 times of installing measured product, realizes running the temperature rise test under high voltage operating mode.
In a word, the present invention provides (small area analysis) high voltage parameter of demonstration test by part of boosting, high voltage potential is provided by up-flow part (low-voltage) big current parameter of demonstration test, it puts on the high-voltage electrical equipment being provided with measured product (equipotential temperature measuring equipment) jointly, realizes high-voltage large current associating temperature rise demonstration test and test.
To be provided with in the 12kV high-tension switch cabinet of equipotential temperature measuring equipment:
When the primary current loop that the isolating switch DL, the disconnector GN that close a floodgate in the switch cubicle (KYN-12) that equipotential temperature measuring equipment is housed and copper bus-bar etc. connect and compose is in closure state, in cabinet, primary current loop is connected to form closed-loop path into and out of line end and current lifting device B2 Secondary Winding.In cabinet, primary current loop is formed over the ground the insulation resistance R of (comprising switch cubicle metal inner surface) by insulating part and air distance
x, this insulation resistance R
xto the working voltage V3 provided by step-up transformer B1 be born, and temperature measuring equipment will be in high voltage electric field and obtain security and monitoring reliability checking.
In the inside that equipotential temperature measuring equipment switch cubicle is housed, artificially overheating fault is set, by current lifting device B2 regulation output electric current under high voltage electric field, observe, measure, contrast all kinds of artificial current loop overheating fault situation, carry out evaluating and testing to the Monitoring Performance of In-Line Temperature Measure System and the analysis management software on backstage and verify, finally obtaining the comprehensive evaluation result of this In-Line Temperature Measure System.
Operation steps is: after having checked all states such as high-voltage electrical equipment (as in switch cubicle) its loop and device etc. need carrying out joint verification test and all having met live testing verification condition, power turn-on input switch K1, High voltage output K switch 2 successively, then supply voltage V1 adjusts voltage V2 by the pressure regulation motor M 1 of boosting pressure regulator T1 and makes step-up transformer B1 output voltage to high-voltage electrical equipment (as switch cubicle) working voltage V3, after it is stable, prepare up-flow.By taking the control system of potential isolation measure, close up-flow input switch K3, make to take out pressure winding voltage V4 to adjust voltage V5 by the pressure regulation motor M 2 of up-flow pressure regulator T2 and make current lifting device B2 output current to the current loop of high-voltage electrical equipment (as in switch cubicle), when reaching the test current of expection, observe with or without abnormal occurrence, then, after its temperature is basicly stable by regulation, the test and appraisal of temperature survey, functional verification and correlation parameter and analysis and management system are carried out.As the ability to overheating defect monitoring need be verified, first platform of the present invention exited and after carrying out corresponding safety practice, carry out defect setting, then completing associated verification test according to above-mentioned boosting, up-flow step and requirement.
The technical indicator of the high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment:
Major equipment model:
Boosting Variant number: LTSB-25/375-(C) 0.25;
Current lifting device model: TYL-15;
Support insulator model: ZS-40.5/6;
The key technical indexes:
Supply voltage: 250V;
Boosting becomes ceiling voltage: 25kV;
Boosting becomes no-load voltage ratio: 100;
Tap winding rated voltage: 250V;
Tap winding maximum current: 150A;
Current lifting device maximum output current: 3000A(5V);
Support insulator short-time withstand voltage: 100kV.
Claims (4)
1. a high-voltage large current associating temperature rise verification platform for equipotential temperature measuring equipment, is characterized in that, boosting pressure regulator and step-up transformer are placed on the ground and shell ground connection respectively, and the high pressure winding of step-up transformer is provided with tap; Insulated platform comprises metal table top and insulation column, insulation column bearing metal table top; Up-flow pressure regulator and current lifting device are placed on metal table top and shell is connected respectively to metal table top; Power supply is connected to the input end of boosting pressure regulator, and the output terminal of boosting pressure regulator is connected to the input end of step-up transformer; The high-voltage output end of step-up transformer is connected to the input end of up-flow pressure regulator, and tap is connected to metal table top; The output terminal of up-flow pressure regulator is connected to the input end of current lifting device, and the output terminal of current lifting device is connected to the high-voltage electrical equipment that equipotential temperature measuring equipment is monitored; Boosting pressure regulator comprises booster and booster control circuit, and booster is connected to booster control circuit, and booster control circuit is connected to control desk; Up-flow pressure regulator comprises up-flow motor and up-flow circuit for controlling motor, and up-flow motor is connected to up-flow circuit for controlling motor, and up-flow circuit for controlling motor is connected to control desk by isolator; Described isolator comprises wireless launcher and wireless receiver; Control desk is connected to wireless launcher, and wireless launcher is connected to wireless receiver by wireless channel, and wireless receiver is connected to up-flow circuit for controlling motor; Described up-flow circuit for controlling motor is made up of series stabilized current circuit after up-flow circuit is in parallel with falling current circuit; Described up-flow circuit by after the normally opened contact of up-flow electromagnetic switch SL and the second normally opened contact KM1-2 parallel connection of the first relay K M1, then with fall the normally closed contact, the normally closed contact of the second relay K M2, the coils connected in series of high limit switch XW1 and the first relay K M1 that flow electromagnetic switch JL and form; Fall current circuit by after falling the stream normally opened contact of electromagnetic switch JL and the second normally opened contact KM2-2 parallel connection of the second relay K M2, then form with the normally closed contact of up-flow electromagnetic switch SL, the normally closed contact of the first relay K M1, the coils connected in series of low limit switch XW2 and the second relay K M2; Current stabilization circuit by the normally closed contact of fuse R3, current stabilization electromagnetic switch WL and the normally closed contact of the first electrothermal relay FR1 in series; Described up-flow electromagnetic switch SL, fall stream electromagnetic switch JL and current stabilization electromagnetic switch WL control end be connected respectively to wireless receiver; The first normally opened contact KM1-1 of the first relay K M1 is connected in the rotating forward loop of up-flow motor, and the first normally opened contact KM2-1 of the second relay K M2 is connected in the reversion loop of up-flow motor.
2. the high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment as claimed in claim 1, it is characterized in that, power supply input switch K1 is also provided with between the input end of described power supply and boosting pressure regulator, also be provided with High voltage output K switch 2 between the output terminal of boosting pressure regulator and the input end of step-up transformer, the control end of power supply input switch K1 and High voltage output K switch 2 is connected respectively to control desk; Also be provided with up-flow input switch K3 between the high-voltage output end of described step-up transformer and the input end of up-flow pressure regulator, up-flow input switch K3 is made up of the first normally opened contact J3-1 of the 3rd relay J 3; After the second normally opened contact J3-2 of up-flow input switch control circuit by the normally opened contact of the electromagnetic switch QD that closes a floodgate the 3rd relay J 3 in parallel, more in series with the normally closed contact of separating brake electromagnetic switch ST, the coil of the 3rd relay J 3 and fuse R1; The control end of combined floodgate electromagnetic switch QD and separating brake electromagnetic switch ST is connected respectively to wireless receiver.
3. the high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment as claimed in claim 1, it is characterized in that, the surrounding of the metal table top of described insulated platform is provided with grading ring.
4. the high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment as claimed in claim 1, it is characterized in that, the model of described step-up transformer is LTSB-25/375-(C) 0.25, and current lifting device model is TYL-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003994.2A CN103743977B (en) | 2014-01-06 | 2014-01-06 | The high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003994.2A CN103743977B (en) | 2014-01-06 | 2014-01-06 | The high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103743977A CN103743977A (en) | 2014-04-23 |
| CN103743977B true CN103743977B (en) | 2016-04-06 |
Family
ID=50501012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410003994.2A Active CN103743977B (en) | 2014-01-06 | 2014-01-06 | The high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103743977B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004956B (en) * | 2015-07-30 | 2018-03-30 | 天地（常州）自动化股份有限公司 | A kind of current-collector control and temperature rise test equipment |
| CN106645902B (en) * | 2016-12-13 | 2021-04-23 | 中国电力科学研究院 | System and method capable of generating direct-current high voltage and direct-current large current simultaneously |
| CN108445329A (en) * | 2018-06-11 | 2018-08-24 | 成都理工大学 | A kind of temperature-rise test device of extra-high voltage large capacity combined electrical apparatus |
| CN112490901A (en) * | 2020-11-27 | 2021-03-12 | 江西宁鸿电子技术有限公司 | Large current generator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2657012Y (en) * | 2003-10-31 | 2004-11-17 | 荆门供电局 | Full automatic electrity power protective CT volt-ampere characteristics, conversion ratio, polartiy test instrument |
| CN102419410A (en) * | 2011-08-19 | 2012-04-18 | 云南电力试验研究院(集团)有限公司 | Voltage/current double-applying testing device for electric device |
| CN102707172A (en) * | 2012-06-01 | 2012-10-03 | 湖南省电力公司科学研究院 | Test device for simulating icing of power transmission line |
| CN203688697U (en) * | 2014-01-06 | 2014-07-02 | 国家电网公司 | High-voltage large-current combined temperature rise verification platform of equivalent potential temperature measuring device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0621642A2 (en) * | 2006-06-02 | 2011-12-20 | Airbus Gmbh | Test apparatus and method for detecting a contact deficiency of an electrically conductive connection |
-
2014
- 2014-01-06 CN CN201410003994.2A patent/CN103743977B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2657012Y (en) * | 2003-10-31 | 2004-11-17 | 荆门供电局 | Full automatic electrity power protective CT volt-ampere characteristics, conversion ratio, polartiy test instrument |
| CN102419410A (en) * | 2011-08-19 | 2012-04-18 | 云南电力试验研究院(集团)有限公司 | Voltage/current double-applying testing device for electric device |
| CN102707172A (en) * | 2012-06-01 | 2012-10-03 | 湖南省电力公司科学研究院 | Test device for simulating icing of power transmission line |
| CN203688697U (en) * | 2014-01-06 | 2014-07-02 | 国家电网公司 | High-voltage large-current combined temperature rise verification platform of equivalent potential temperature measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103743977A (en) | 2014-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103743977B (en) | The high-voltage large current associating temperature rise verification platform of equipotential temperature measuring equipment | |
| CN103091609A (en) | Performance detecting system and method thereof of gas insulated substation (GIS) partial discharge on-line monitoring device | |
| EP3054304A1 (en) | Device for detecting open phase of connection line of standby transformer in nuclear power plant by using rogowski coil | |
| CN202276193U (en) | Intelligent switch cabinet integrating intelligent operation and control and microcomputer protection | |
| CN205353237U (en) | Adjustable circuit of resistance and induced -current suppression device | |
| KR20230049226A (en) | A fault sign detection system for electric equipments based on AI | |
| Kosse et al. | Overview of development, design, testing and application of compact gas-insulated DC systems up to±550 kV | |
| Mladenovic et al. | Artificial aging and diagnostic measurements on medium-voltage, paper-insulated, lead-covered cables | |
| CN203688697U (en) | High-voltage large-current combined temperature rise verification platform of equivalent potential temperature measuring device | |
| CN112526292A (en) | Distribution cable operation quality examination and test platform | |
| CN106597116A (en) | Compensating capacitor capacitance online monitoring device and method | |
| CN104184410B (en) | High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus | |
| KR101360979B1 (en) | Mold transformer diagnose system using severity assessment | |
| Balzer et al. | Strategies for optimizing the use of substation assets | |
| CN103941165B (en) | GIS device experimental rig and method | |
| CN102914757A (en) | Power-frequency high-voltage electroscope tester | |
| Ghassemi et al. | 275 kV cable discharge field measurement and analysis of SVLs chain failure using ATP | |
| KR101316693B1 (en) | Mold transformer diagnose mothod using severity assessment | |
| KR101332714B1 (en) | Mold transformer diagnose method using severity assessment | |
| Plath et al. | After laying tests of 400 kV XLPE cable systems for Bewag Berlin | |
| KR101358049B1 (en) | Mold transformer diagnose system | |
| Mladenovic et al. | ICAAS—Integrated system for lasting accelerated aging of MV cables, data monitoring and acquisition | |
| RU105536U1 (en) | MOBILE DEVICE FOR MONITORING, DIAGNOSTICS AND PROTECTION OF POWER TRANSFORMERS WITHOUT DISCONNECTING THEM FROM LOAD | |
| KR20180032994A (en) | Potential rise measuring device of ground system | |
| Biabani et al. | Maintenance of EHV substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |