CN101881813A - Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit - Google Patents

Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit Download PDF

Info

Publication number
CN101881813A
CN101881813A CN2010102046834A CN201010204683A CN101881813A CN 101881813 A CN101881813 A CN 101881813A CN 2010102046834 A CN2010102046834 A CN 2010102046834A CN 201010204683 A CN201010204683 A CN 201010204683A CN 101881813 A CN101881813 A CN 101881813A
Authority
CN
China
Prior art keywords
isolated switchgear
equipment
pipe box
pipeline
gis
Prior art date
Application number
CN2010102046834A
Other languages
Chinese (zh)
Other versions
CN101881813B (en
Inventor
陈维江
戴敏
谷定燮
林集明
吴军辉
周沛洪
陈国强
李振强
韩彬
何慧雯
李文艺
Original Assignee
国网电力科学研究院
国家电网公司
中国电力科学研究院
河南平高电气股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 国网电力科学研究院, 国家电网公司, 中国电力科学研究院, 河南平高电气股份有限公司 filed Critical 国网电力科学研究院
Priority to CN2010102046834A priority Critical patent/CN101881813B/en
Publication of CN101881813A publication Critical patent/CN101881813A/en
Application granted granted Critical
Publication of CN101881813B publication Critical patent/CN101881813B/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/333Testing of the switching capacity of high-voltage circuit-breakers ; Testing of breaking capacity or related variables, e.g. post arc current or transient recovery voltage
    • G01R31/3333Apparatus, systems or circuits therefor
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/30Circuit design
    • G06F30/36Circuit design at the analogue level
    • G06F30/367Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/62Testing of transformers

Abstract

The invention provides a method for simulating a gas insulated switchgear (GIS) transformer substation to produce very fast transient overvoltage (VFTO) by a test circuit and the test circuit. The test circuit comprises a first isolating switch gear, a second isolating switch gear, a first isolating pipe sleeve, a second isolating pipe sleeve and a branch bus, wherein one end of the first isolating switch gear is connected with one end of the second isolating switch gear via a pipeline; and the other end of the first isolating switch gear is connected with one end of th first isolating pipe sleeve via a pipeline; the other end of the second isolating switch gear is connected with one end of the second isolating pipe sleeve; one end of the branch bus is connected with the pipeline between the first isolating switch gear and the first isolating pipe sleeve and the other end thereof is overhung; and VTTO waveforms occurring on isolating switch fractures and GIS pipelines in the GIS transformer substation are simulated by changing the length of the branch bus under different GIS connection modes.

Description

The method and the test loop that produce very fast transient overvoltage in the simulation GIS transformer station
Technical field
The present invention relates to the power technology field, particularly a kind of by producing the method and the test loop of very fast transient overvoltage in the analog gas insulated metal sealing switch equipment GIS transformer station of test loop.
Background technology
Development along with power technology, at present, clearly stipulated Cubicle Gas-Insulated Switchgear (GIS among the power industry standard GB1985-89 (ac high-voltage disconnector and grounding switch), GasInsulated Switchgear) disconnector in the transformer station must carry out the little capacity current test method of folding, and recommended the test loop, test the examination disconnector with this and close the ability of closing and cut-offfing little capacity current.
As shown in Figure 1, be the synoptic diagram in disconnector test connection loop in the prior art, in this Fig. 1, U1 represents supply voltage, and its alternating voltage amplitude should be during test Times rated voltage; C1 is the additional lumped capacitance of mains side, but the regulation among its value reference standard GB1985-89 is chosen; U2 represents the load-side power supply, chooses the negative polarity DC voltage during test, and amplitude is Times rated voltage.DT represents tested disconnector, and DA represents auxiliary disconnector.D1 represents the distance of the separating brake contact of DT to the sleeve pipe termination; D2 represents the distance of the separating brake contact of DT to the separating brake contact of DA.In order to obtain typically the very condition of fast transient (VFT, Very Fast Transient), ratio d2/d1 should be in the scope of 0.36-0.52.
The purpose in the test connection loop that standard GB1985-89 recommends is the little current capacity of folding of examination disconnector, therefore only needs to produce very fast transient overvoltage (VFTO, Very Fast TransientVoltage) and gets final product.The waveform of the VFTO that produces under this condition is different from the waveform of the VFTO that occurs in the extra-high voltage GIS transformer station, and is difficult to judge the situation that whether can occur VFTO amplitude maximum in engineering.The VFTO that occurs in the extra-high voltage GIS transformer station is taken place repeatedly to reflect and reflect to cause at the wave impedance point of discontinuity by voltage wave, when the difference of the GIS mode of connection caused the isolator operation of diverse location, the position that the maximum amplitude of VFTO occurs had uncertainty.
Therefore, disconnector among the GIS that present power industry standard proposes must carry out the waveform that the VFTO that occurs in the extra-high voltage GIS transformer station can not truly be reflected in the little capacity current test loop of folding, the position basic fixed that the VFTO maximal value that produces occurs is promptly on the fracture of the disconnector that cut-offs.
In research and practice process to prior art, the present inventor finds, in the existing implementation, in GIS transformer station during isolator operation, produce the incision position that maximum VFTO not necessarily appears at disconnector, might appear on the bus certain a bit, for this situation, at present can not comprehensive simulated and measures the VFTO waveform that GIS transformer station occurs in the test loop that proposes of power industry standard, has very large limitation.
Summary of the invention
It is a kind of by producing the method and the test loop of very fast transient overvoltage in the analog gas insulated metal sealing switch equipment GIS transformer station of test loop, with the VFTO waveform that occurs on isolated switchgear fracture and GIS pipeline in the simulation GIS transformer station that the embodiment of the invention provides.
For this reason, the invention provides a kind of method by generation very fast transient overvoltage in the analog gas insulated metal sealing switch equipment GIS transformer station of test loop, described method comprises:
Be connected with branch bar on first isolated switchgear in the test loop and first pipeline of isolating between the pipe box;
Change the length of described branch bar, when first isolated switchgear and connected second isolated switchgear are operated respectively under the different GIS mode of connection in the simulation GIS transformer station, the very fast transient overvoltage that produces in the described test loop.
Described branch bar is the branch bar of regular length; It perhaps is adjustable branch bar; Wherein, described branch bar is a Cubicle Gas-Insulated Switchgear GIS pipeline.
Optionally, described first isolated switchgear is operated disconnector DS1 equipment, described second isolated switchgear is auxiliary disconnector DA equipment, described first isolates pipe box for connecting the sleeve pipe of power supply, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is operated disconnector DA equipment, described second isolated switchgear is auxiliary disconnector DS1 equipment, first isolates pipe box for connecting the sleeve pipe of power supply, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is auxiliary disconnector DS1 equipment, described second isolated switchgear is operated disconnector DA equipment, first isolates pipe box for connecting the sleeve pipe of load, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of power supply.
Optionally, have opening and closing resistor in the described DS1 equipment; Be not with opening and closing resistor in the described DA equipment.
Accordingly, the invention provides a kind of test loop, comprising: first isolated switchgear, second isolated switchgear, first are isolated pipe box, second and are isolated pipe box; Wherein, one end of described first isolated switchgear is connected with an end of described second isolated switchgear by pipeline, the other end of described first isolated switchgear is isolated pipe box one end by pipeline and described first and is connected, the other end of described second isolated switchgear is connected with described second end of isolating pipe box by pipeline, also comprise: also comprise: branch bar, one end of described branch bar is connected on described first isolated switchgear and first pipeline of isolating between the pipe box, the other end is unsettled, simulates the very fast transient overvoltage that produces under the GIS modes of connection different in the GIS transformer station by the length that changes described branch bar.
Optionally, an end of described branch bar is connected the connected mode that described first isolated switchgear and first isolates on the pipeline between the pipe box and is: clamping, butt joint or connect with screw-nut.
Optionally, described branch bar is a Cubicle Gas-Insulated Switchgear GIS pipeline, and the length of described GIS pipeline is 3m, 6m or 9m.
Optionally, described branch bar is adjustable GIS pipeline, and the length of described adjustable GIS pipeline is 2m to 10m.
Optionally, described first isolated switchgear is for being operated disconnector DS1 equipment, and described second isolated switchgear is auxiliary disconnector DA equipment, and first isolates pipe box for connecting the sleeve pipe of power supply, and second isolates pipe box for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is operated disconnector DA equipment, and described second isolated switchgear is auxiliary disconnector DS1 equipment, and first isolates pipe box for connecting the sleeve pipe of power supply, and second isolates pipe box for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is auxiliary disconnector DS1 equipment, and described second isolated switchgear is operated disconnector DA equipment, and first isolates pipe box for connecting the sleeve pipe of load, and second isolates pipe box for connecting the sleeve pipe of power supply.
Optionally, the length of the pipeline between described DS1 equipment and the described DA equipment is 5.27m to 7.27m;
End on the described branch bar to the duct length between first isolated switchgear is: 1.245m to 3.245m;
The duct length that a end to the first on the described branch bar is isolated between the pipe box obtains by emulation, for: 10.6m to 12.6m.
Optionally, have opening and closing resistor in the described DS1 equipment; Be not with opening and closing resistor in the described DA equipment.
Optionally, the other end of described first isolated switchgear is connected with described first end of isolating pipe box by pipeline and comprises: the other end of described first isolated switchgear is connected by the end of L type pipeline with the described first isolation pipe box;
The other end of described second isolated switchgear is connected with described second end of isolating pipe box by pipeline and comprises: the other end of described second isolated switchgear is connected with described second end of isolating pipe box by L type pipeline.
Optionally, the corner of described L type pipeline is detachable.
As shown from the above technical solution, very fast transient overvoltage (VFTO) waveform that produces when carrying out isolator operation under the available for different connection modes of ultra-high voltage transformer station can be simulated in the test loop that proposes of the present invention.The present invention is by connecting branch bar (be test loop have this structure of branch), by the VFTO that produces on the pipeline between described first isolated switchgear and described second isolated switchgear under the GIS modes of connection different in the length simulation GIS transformer station that changes branch bar between first isolated switchgear and mains side sleeve pipe.
Further, in the present invention, the duct length between each equipment of test loop there is certain requirement, such as duct length of the duct length between the duct length between DS1 and the DA, DS1 and the BG1, branch bar etc.;
Further, for the ease of the dismounting of equipment, the test loop is " L type " structure that is used for being convenient to the reconfiguration line.The position of DS1 and DA be can exchange easily by " L type " structure, power supply and load that DS1 is connected with DA perhaps exchanged.That is to say, when the present invention not only can simulate in the GIS transformer station isolator operation according to this test loop, the VFTO that on disconnector fracture and GIS pipeline, occurs.Can also simulate the VFTO under the multiple operation operating mode by changing the structure of connection circuit, the result who measures on the test loop can reflect the maximum VFTO that occurs in the engineering.
Description of drawings
Fig. 1 is the synoptic diagram in disconnector test connection loop in the prior art;
The structural representation of a kind of test loop of providing among the present invention is provided Fig. 2;
The structural representation in the VFTO experiment with measuring loop among the ultra-high voltage transformer station GIS that provides among the present invention is provided Fig. 3;
The three-dimensional structure diagram of the test loop that provides among the present invention is provided Fig. 4;
The front view of the test loop that provides among the present invention is provided Fig. 5 A;
The vertical view of the test loop that provides among the present invention is provided Fig. 5 B;
The dismounting synoptic diagram of Fig. 6 during for the position of the exchange DS1 that provides among the present invention and DA;
Fig. 7 is a kind of by producing the process flow diagram of the method for very fast transient overvoltage in the analog gas insulated metal sealing switch equipment GIS transformer station of test loop for what provide among the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
The structural representation of Fig. 2 for a kind of test loop of providing among the present invention is provided; Described test loop comprises: first isolated switchgear 21, second isolated switchgear 22, first are isolated pipe box 23, second and are isolated pipe box 24 and branch bar 25; Wherein, one end of described first isolated switchgear 21 is connected by the end of pipeline with described second isolated switchgear 22, the other end of described first isolated switchgear 21 is isolated pipe box 23 1 ends by pipeline and described first and is connected, the other end of described second isolated switchgear 22 is connected with described second end of isolating pipe box 24 by pipeline, one end of described branch bar 25 is connected on described first isolated switchgear 21 and first pipeline of isolating between the pipe box 23, the other end of described branch bar is unsettled, simulate the very fast transient overvoltage that produces under the GIS mode of connection different in the GIS transformer station (being different test loops), the VFTO that produces between promptly described first isolated switchgear and described second isolated switchgear by the length that changes branch bar.
Test loop and extra-high voltage Cubicle Gas-Insulated Switchgear (GIS that the present invention proposes, GasInsulated Switchgear) isolated switchgear in the transformer station is (such as first isolated switchgear and/or described second isolated switchgear etc., down with) mode of connection basically identical during operation, can reproduce the waveform of the very fast transient overvoltage (VFTO) that the isolated switchgear operation produces in the extra-high voltage GIS transformer station really.That is to say, utilize the test loop of technical scheme of the present invention, can simulate in the GIS transformer station, when isolated switchgear is operated, the VFTO waveform that occurs on simulation isolated switchgear fracture and the GIS pipeline.In addition, this test loop combines the size of the actual GIS transformer station in the engineering, the result who measures on the test loop can reflect the voltage of the maximum VFTO that occurs in the engineering, and can change the test loop structure, thereby the voltage of the VFTO that produces between the isolated switchgear under the different GIS mode of connection in the simulation GIS transformer station by branch bar.
Optionally, an end of described branch bar is connected the connected mode that described first isolated switchgear and first isolates on the pipeline between the pipe box and is: clamping, butt joint or connect with screw-nut.Perhaps be that the standard between each equipment connects in the GIS transformer station.
Optionally, described branch bar is a Cubicle Gas-Insulated Switchgear GIS pipeline, but is not limited to this.Generally, the length of described GIS pipeline can be 3m, 6m or 9m, but be not limited to this down, also can be according to the distance between first isolated switchgear and second isolated switchgear, and first isolated switchgear carry out adaptive modification with the distance of separating bus, present embodiment does not limit.
Optionally, described branch bar also can be two sections GIS pipelines, and generally, the length of every section GIS pipeline is respectively 3m and 6m, can certainly adaptability revision, and present embodiment does not limit; In addition, described branch bar also can be adjustable GIS pipeline, such as being adjustable two sections GIS pipelines, perhaps, adjustable three sections GIS pipelines etc., the length of its described adjustable GIS pipeline is 2m to 10m generally speaking, but also can actual application carry out adaptability revision, and present embodiment does not limit.
Optionally, when described first isolated switchgear when being operated disconnector DS1 equipment, described second isolated switchgear is auxiliary disconnector DA equipment, first isolates pipe box for connecting the sleeve pipe of power supply, second isolates pipe box for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is operated disconnector DA equipment, and described second isolated switchgear is auxiliary disconnector DS1 equipment, and described first isolates pipe box for connecting the sleeve pipe of power supply, and described second isolates pipe box for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is auxiliary disconnector DS1 equipment, and described second isolated switchgear is operated disconnector DA equipment, and described first isolates pipe box for connecting the sleeve pipe of load, and described second isolates pipe box for connecting the sleeve pipe of power supply.
Optionally, the length of the pipeline between described DS1 equipment and the described DA equipment is 5.27m to 7.27m;
End on the described branch bar to the duct length between first isolated switchgear is: 1.245m to 3.245m.Can determine according to the minimum length of first isolated switchgear and branch bar.
Optionally, the duct length that the end to the first on the described branch bar is isolated between the pipe box obtains by emulation, for: 10.6m to 12.6m.
Optionally, have opening and closing resistor in the described DS1 equipment; Be not with opening and closing resistor in the described DA equipment.
Optionally, described first isolated switchgear and be connected described first isolated switchgear and first pipeline of isolating between the pipe box on an end of branch bar between length can for: 1.245m to 3.245m is 2.245m generally speaking; Perhaps, being 3.475m to 5.475m, is 4.475m generally speaking.But be not limited to this, also can make amendment according to practical application.
Optionally, for the ease of changing the wiring in the test loop, the other end of described first isolated switchgear is connected with described first end of isolating pipe box by pipeline and comprises: the other end of described first isolated switchgear is connected with described first end of isolating pipe box by L type pipeline;
The other end of described second isolated switchgear is connected with described second end of isolating pipe box by pipeline and comprises: the other end of described second isolated switchgear is connected with described second end of isolating pipe box by L type pipeline.Wherein, the corner of described L type pipeline is detachable.
The test loop that the present invention proposes is different from the test loop of standard recommendation, and the structure of the test loop among the present invention can be simulated the VFTO that produces when carrying out isolator operation under the available for different connection modes of ultra-high voltage transformer station.The present invention is by connecting branch bar (be test loop have this structure of branch) between DS1 equipment and mains side sleeve pipe, simulate the transient overvoltage that produces between the described DS1 equipment and described DA equipment under the GIS modes of connection different in the GIS transformer station by the length that changes described branch bar.Simultaneously, in the present invention, the size of test loop there is certain requirement, such as duct length of the duct length between the duct length between DS1 and the DA, DS1 and the BG1, branch bar etc.; In addition, for the ease of the dismounting of equipment, the test loop is " L type " structure that is used for being convenient to the reconfiguration line.The position of DS1 and DA be can exchange easily by " L type " structure, power supply and load perhaps are connected with it.That is to say, when the present invention not only can simulate in the GIS transformer station isolator operation according to this test loop, the VFTO that on disconnector fracture and GIS pipeline, occurs.Can also simulate the VFTO under the multiple operation operating mode by changing the structure of connection circuit, the result who measures on the test loop can reflect the maximum VFTO that occurs in the engineering.
For the ease of those skilled in the art's understanding, illustrate with concrete application example below.
Also see also Fig. 3, structural representation for the VFTO experiment with measuring loop among a kind of ultra-high voltage transformer station GIS that provides among the present invention, in this embodiment, first isolated switchgear is to be operated disconnector DS1, second isolated switchgear is with auxiliary disconnector DA, first isolates pipe box BG1 to connect mains side, the second isolation pipe box BG2 is an example to connect load-side, branch bar is an example with M1 and M2, but be not limited to this, in this embodiment, can also exchange DS1 and DA position, be that described first isolated switchgear is operated disconnector DA equipment, described second isolated switchgear is auxiliary disconnector DS1 equipment, first isolates pipe box for connecting the sleeve pipe of power supply, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of load.Can also be that described first isolated switchgear is auxiliary disconnector DS1 equipment, described second isolated switchgear is operated disconnector DA equipment, first isolates pipe box for connecting the sleeve pipe of load, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of power supply.Its implementation procedure is similar, specifically sees for details following.
As shown in Figure 3, the main body of test loop is this part between BG1 and the BG2.In this embodiment, U1 represents supply voltage, and its alternating voltage amplitude should be during test Times rated voltage; C1 is the additional lumped capacitance of mains side, but the regulation among its value reference standard GB1985-89 is chosen; U2 represents load side voltage, chooses the negative polarity DC voltage during test, and amplitude is Times rated voltage; BG1 and BG2 are respectively the extra-high voltage sleeve pipe of mains side and load-side, in the present embodiment, DS1 is for being operated disconnector, DA is auxiliary disconnector, the two is referred to as the GIS disconnector, can have opening and closing resistor among the DS1, not be with opening and closing resistor among the DA, other parts are the GIS pipeline in the test loop.Each equipment size in the test loop is the size of extra-high voltage GIS equipment, and each equipment size of different manufacturing firms is different.Connection between its each equipment connects according to the standard between the GIS equipment.
Also can adopt the DS1 that has opening and closing resistor in the present invention, its objective is the restriction that can be used for studying VFTO.Can also simulate the maximal value of the VFTO that produces under the GIS modes of connection different in the GIS transformer station by the length that changes branch bar among the present invention.Specifically as shown in Figure 3, the present invention connects one section branch bar on the pipeline between BG1 and the DS1, simulates the maximal value of the VFTO that produces under the GIS mode of connection different in the GIS transformer station (being different test loops) by the length that changes branch bar.
According to the practical structures of China extra-high voltage GIS transformer station, the length that is electrically connected that has proposed the pipeline of DS1 and DA section among the present invention is 6.27m.The selection principle of this length is: and the electrical length basically identical between disconnector and isolating switch fracture in China's ultra-high voltage transformer station.Distance between the disconnector of the ultra-high voltage transformer station of China and isolating switch fracture is roughly between 6m and 7m.Following duct length all refers to be electrically connected length.
For the length of DS1 and M1 segment pipe, among the present invention according to the minimum length of DS1 disconnector and duplexure in the transformer station, and the minimum requirement of GIS equipment itself, be taken as 2.245m, but be not limited to this, can carry out adaptability revision according to practical application yet, the present invention does not limit.
Can obtain for the length of M1 and BG1 method by simulation calculation.During emulation, with the length of the length of BG1 and M1 segment pipe and M1 and M2 segment pipe as variable, when the length that calculates length at BG1 and M1 segment pipe and be 11.6m, M1 and M2 segment pipe is 9m, maximum VFTO can appear in the GIS disconnector place in the service test loop, its calculation process is: calculate and adopt the programming of EMTP electro-magnetic transient calculation procedure to carry out, the time earlier with the length of BG1 and M1 segment pipe as definite value, change the length of M1 and M2 segment pipe, obtain a series of result of calculation; Change the length of BG1 and M1 segment pipe then, get a value again, will it as definite value, change the length of M1 and M2 segment pipe again, obtain a series of result of calculation ... choose the maximal value in these result of calculations, corresponding BG1 and M1 segment pipe length are 11.6m, and the length of M1 and M2 segment pipe is 9m.
In this test, the length of BG1 and M1 segment pipe is meant the length of M1 to the BG1 end, and BG1 is as sleeve pipe, and length own is 13.15m.Because the test loop is mainly used in the VFTO that produces when measuring alternating current source (U1 side) isolator operation, therefore the GIS length of direct current source (U2 side) is not done requirement, promptly the length of DA and BG2 segment pipe is not done requirement, can freely be selected by the experimenter.DA that the present invention recommends and the length of BG2 are 4.475m.Operation steps during its experiment with measuring is mainly as follows: determine DS1 and the residing separating brake of DA position earlier; Afterwards, change the length of described branch bar, the different GIS mode of connection in the simulation GIS transformer station is 3 meters such as the length that changes described branch bar, and promptly DS1 is with the test loop structure of 3 meters branch bar; Then, closed DA makes DC voltage on the pipeline band between DS1 and the DA earlier, disconnects DA then; Closed DS1 makes in the test loop and produces VFTO between the DS1 and DA; Disconnect DS1, make and produce VFTO in the test loop; Finish one-shot measurement.That is to say, when measuring, can simulate under the GIS modes of connection different in the GIS transformer station by changing the length of described branch bar, the VFTO that produces in the test loop is so that reflect the voltage of the maximum VFTO that occurs in the engineering according to the result who measures on the test loop.
Maximum VFTO not only can be measured in test loop of the present invention, can also study the influence of loop structure to VFTO.When China's ultra-high voltage transformer station adopted GIS, when the GIS disconnector cut-off with closed bus section, busbar section (being the GIS pipeline), the length of bus section, busbar section was included in the scope of 3m~9m substantially.Test loop of the present invention can be adjusted the length of branch bar M1 and M2 segment pipe when being used for the development test loop to the influencing of VFTO.The length of branch bar can be adjusted into representative 0m, 3m, 6m and four kinds of situations of 3m+6m respectively, but be not limited to this according to the GIS wiring characteristics of ultra-high voltage transformer station, can also adjust according to practical application, such as 10,15 or 20 etc.Wherein, branch bar is made of two sections GIS pipelines, and length is respectively 3m and 6m, is not limited to this.When branch bar did not insert the test loop, when promptly branch bar length was 0m, the test loop that the present invention proposes was the disconnector test connection loop that standard GB1985-89 recommends.
Test loop of the present invention can be studied the restriction of VFTO simultaneously.In the test loop, DS1 is equipped with opening and closing resistor, and DA is unkitted opening and closing resistor.According to connection shown in Figure 3, operation DS1 can measure the VFTO waveform that has under restriction (restriction the is Disconnector with Opening and Closing Resistor) situation as the loop.The position of exchange DS1 and DA, DA produces VFTO by operation, can measure the VFTO waveform when not taking restriction.It is the three-dimensional structure diagram of the test loop that provides among the present invention specifically as shown in Figure 4.
In the present invention, can change the circuit connection of test loop, in fact described change circuit connection comprises length that changes branch bar and the two kinds of independent events in position that exchange DS1 and DA, can exchange the position of DS1 and DA among the present invention, in the above-described embodiments, the power supply that also can exchange links to each other with DA with DS1 and the position of load, promptly power supply is connected with DA, load is connected with DS1, and operation DA.The purpose of exchange is by operating different DS1 or DA, when research DS1 has opening and closing resistor or the VFTO of DA during not with opening and closing resistor.
For the ease of the dismounting of each equipment in the test loop (such as DS1 and DA), M1 adopts " L type " to be connected with DA with the BG2 segment pipe with the BG1 segment pipe.When the position of exchange DS1 and DA, can dismantle from " L type " corner, remove I, II, III, IV part successively, avoid the test loop complete removal is reinstalled, specifically shown in Fig. 5 A and Fig. 5 B, the front view and the vertical view of the test loop that provides among the present invention is provided for Fig. 5 A and 5B for it.
The process of reinstalling the test loop after the dismounting is for installing IV, III, II, I successively.Its specifically as shown in Figure 6, the dismounting synoptic diagram during for the position of the exchange DS1 that provides among the present invention and DA.
Based on the implementation procedure of above-mentioned test loop, the present invention also provides a kind of method by generation very fast transient overvoltage in the analog gas insulated metal sealing switch equipment GIS transformer station of test loop, and its process flow diagram sees Fig. 7 for details, and described method comprises:
Step 701: be connected with branch bar on first isolated switchgear in the test loop and first pipeline of isolating between the pipe box;
Step 701: the length that changes described branch bar, when first isolated switchgear and connected second isolated switchgear are operated respectively under the different GIS mode of connection in the simulation GIS transformer station, the very fast transient overvoltage that produces in the test loop.
Optionally, the described branch bar branch bar that is regular length; It perhaps is adjustable branch bar.
Optionally, described branch bar is a Cubicle Gas-Insulated Switchgear GIS pipeline.
Optionally, optionally, described first isolated switchgear is operated disconnector DS1 equipment, described second isolated switchgear is auxiliary disconnector DA equipment, described first isolates pipe box for connecting the sleeve pipe of power supply, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is operated disconnector DA equipment, described second isolated switchgear is auxiliary disconnector DS1 equipment, first isolates pipe box for connecting the sleeve pipe of power supply, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is auxiliary disconnector DS1 equipment, described second isolated switchgear is operated disconnector DA equipment, first isolates pipe box for connecting the sleeve pipe of load, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of power supply.
Optionally, have opening and closing resistor in the described DS1 equipment; Be not with opening and closing resistor in the described DA equipment.
The implementation procedure of each step sees implementation procedure corresponding in the above-mentioned test loop for details in the described method, does not repeat them here.
Mode of connection basically identical when test loop that the present invention proposes and the operation of extra-high voltage GIS substation isolating-switch can reproduce the VFTO that isolator operation produces in the extra-high voltage GIS transformer station really.Its advantage is, in the time of can simulating in the GIS transformer station isolator operation, and the VFTO that on disconnector fracture and GIS pipeline, occurs.Simultaneously, the test loop combines the actual transformer station size in the engineering, and the result who measures on the test loop can reflect the maximum VFTO that occurs in the engineering.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better embodiment under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (13)

1. one kind by producing the method for very fast transient overvoltage in the analog gas insulated metal sealing switch equipment GIS transformer station of test loop, it is characterized in that described method comprises:
Be connected with branch bar on first isolated switchgear in the test loop and first pipeline of isolating between the pipe box;
Change the length of described branch bar, when first isolated switchgear and connected second isolated switchgear are operated respectively under the different GIS mode of connection in the simulation GIS transformer station, the very fast transient overvoltage that produces in the test loop.
2. method according to claim 1 is characterized in that, described branch bar is the branch bar of regular length; It perhaps is adjustable branch bar; Wherein, described branch bar is a Cubicle Gas-Insulated Switchgear GIS pipeline.
3. method according to claim 1 and 2, it is characterized in that, described first isolated switchgear is operated disconnector DS1 equipment, described second isolated switchgear is auxiliary disconnector DA equipment, described first isolates pipe box for connecting the sleeve pipe of power supply, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is operated disconnector DA equipment, described second isolated switchgear is auxiliary disconnector DS1 equipment, first isolates pipe box for connecting the sleeve pipe of power supply, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is auxiliary disconnector DS1 equipment, described second isolated switchgear is operated disconnector DA equipment, first isolates pipe box for connecting the sleeve pipe of load, and the second isolation pipe box that is connected with second isolated switchgear is for connecting the sleeve pipe of power supply.
4. method according to claim 3 is characterized in that, has opening and closing resistor in the described DS1 equipment; Be not with opening and closing resistor in the described DA equipment.
5. a test loop comprises: first isolated switchgear, second isolated switchgear, the first isolation pipe box, the second isolation pipe box; Wherein, one end of described first isolated switchgear is connected with an end of described second isolated switchgear by pipeline, the other end of described first isolated switchgear is isolated pipe box one end by pipeline and described first and is connected, the other end of described second isolated switchgear is connected with described second end of isolating pipe box by pipeline, it is characterized in that, also comprise: branch bar, one end of described branch bar is connected on described first isolated switchgear and first pipeline of isolating between the pipe box, the other end is unsettled, simulates the very fast transient overvoltage that produces under the GIS modes of connection different in the GIS transformer station by the length that changes described branch bar.
6. test loop according to claim 5 is characterized in that, an end of described branch bar is connected the connected mode that described first isolated switchgear and first isolates on the pipeline between the pipe box and is: clamping, butt joint or connect with screw-nut.
7. test loop according to claim 5 is characterized in that, described branch bar is a Cubicle Gas-Insulated Switchgear GIS pipeline; The length of described GIS pipeline is 3m, 6m or 9m.
8. test loop according to claim 5 is characterized in that, described branch bar is adjustable GIS pipeline, and the length of described adjustable GIS pipeline is 2m to 10m.
9. test loop according to claim 5, it is characterized in that, described first isolated switchgear is for being operated disconnector DS 1 equipment, described second isolated switchgear is auxiliary disconnector DA equipment, first isolates pipe box for connecting the sleeve pipe of power supply, and second isolates pipe box for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is operated disconnector DA equipment, and described second isolated switchgear is auxiliary disconnector DS1 equipment, and described first isolates pipe box for connecting the sleeve pipe of power supply, and described second isolates pipe box for connecting the sleeve pipe of load; Perhaps
Described first isolated switchgear is auxiliary disconnector DS1 equipment, and described second isolated switchgear is operated disconnector DA equipment, and described first isolates pipe box for connecting the sleeve pipe of load, and described second isolates pipe box for connecting the sleeve pipe of power supply.
10. test loop according to claim 9 is characterized in that, the length of the pipeline between described DS1 equipment and the described DA equipment is 5.27m to 7.27m;
End on the described branch bar to the duct length between first isolated switchgear is: 1.245m to 3.245m;
The duct length that a end to the first on the described branch bar is isolated between the pipe box obtains by emulation, for: 10.6m to 12.6m.
11. test loop according to claim 9 is characterized in that, has opening and closing resistor in described DS 1 equipment; Be not with opening and closing resistor in the described DA equipment.
12. according to each described test loop of claim 5 to 11, it is characterized in that the other end of described first isolated switchgear is connected with described first end of isolating pipe box by pipeline and comprises: the other end of described first isolated switchgear is connected with described first end of isolating pipe box by L type pipeline;
The other end of described second isolated switchgear is connected with described second end of isolating pipe box by pipeline and comprises: the other end of described second isolated switchgear is connected with described second end of isolating pipe box by L type pipeline.
13. test loop according to claim 12 is characterized in that, the corner of described L type pipeline is detachable.
CN2010102046834A 2010-06-17 2010-06-17 Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit CN101881813B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102046834A CN101881813B (en) 2010-06-17 2010-06-17 Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN2010102046834A CN101881813B (en) 2010-06-17 2010-06-17 Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit
JP2013514531A JP5813759B2 (en) 2010-06-17 2011-03-11 Method for simulating the occurrence of very fast transient overvoltages in gas insulated switchgear (GIS) substations and this test circuit
PCT/CN2011/000386 WO2011157046A1 (en) 2010-06-17 2011-03-11 Method for simulating very fast transient overvoltage generation in gas insulated switchgear (gis) transformer substation and test loop thereof

Publications (2)

Publication Number Publication Date
CN101881813A true CN101881813A (en) 2010-11-10
CN101881813B CN101881813B (en) 2013-12-04

Family

ID=43053873

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102046834A CN101881813B (en) 2010-06-17 2010-06-17 Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit

Country Status (3)

Country Link
JP (1) JP5813759B2 (en)
CN (1) CN101881813B (en)
WO (1) WO2011157046A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102073003A (en) * 2011-02-16 2011-05-25 上海思源高压开关有限公司 Insulation test tool for gas-insulated metal-enclosed switchgear (GIS)
WO2011157046A1 (en) * 2010-06-17 2011-12-22 国网电力科学研究院 Method for simulating very fast transient overvoltage generation in gas insulated switchgear (gis) transformer substation and test loop thereof
CN102435941A (en) * 2011-09-07 2012-05-02 中国电力科学研究院 Method for simulating very fast transient over-voltage during opening/closing process of isolating switch
CN102565614A (en) * 2012-01-11 2012-07-11 云南电网公司 Alternating voltage loop test method
CN102998556A (en) * 2012-10-29 2013-03-27 中国电力科学研究院 Device and method for super-fast transient overvoltage simulation of metal oxide voltage limiter
CN103149545A (en) * 2013-01-29 2013-06-12 华北电力大学 Testing method, testing device, testing equipment and testing system of very fast transient overvoltage (VFTO) sensor
CN104360193A (en) * 2014-11-12 2015-02-18 国家电网公司 Electromagnetic disturbance simulation test platform of transformer substation secondary system
WO2015032343A1 (en) * 2013-09-09 2015-03-12 国家电网公司 Testing system of gis electronic mutual inductor and method therefor
CN104502751A (en) * 2014-12-10 2015-04-08 国家电网公司 Simulation circuit model for acquiring transient potential uplift of GIS (Gas-Insulator Switchgear) device shell
CN105301400A (en) * 2015-11-10 2016-02-03 中国电力科学研究院 Ultrahigh-voltage AC equipment operation condition simulation system
CN105956337A (en) * 2016-06-13 2016-09-21 华北电力大学 Equivalent circuit modeling method for turning section of L-shaped pipeline of gas insulated substation
CN106680574A (en) * 2016-12-21 2017-05-17 重庆大学 Over-voltage sensing and data processing method for substation equipment
CN106841713A (en) * 2016-12-30 2017-06-13 平高集团有限公司 A kind of very fast transient overvoltage generation device
CN107209221A (en) * 2015-01-21 2017-09-26 西门子公司 Circuit arrangement and high-voltage testing equipment for Hi-pot test
CN109270443A (en) * 2018-08-24 2019-01-25 山东理工大学 A kind of fast transient overvoltage overall process efficient emulation system and emulation mode

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102707131B (en) * 2012-05-18 2014-07-09 华北电力大学 Very fast transient overvoltage (VFTO) automatic measuring system for high-sensitivity medium window
CN103728543B (en) * 2014-01-17 2016-03-16 国家电网公司 One is applicable to steep wave and invades GIS state of insulation on-line monitoring and diagnosis method and device
CN105186491B (en) * 2015-08-27 2017-11-03 国家电网公司 A kind of switching manipulation causes the appraisal procedure of power system primary side overvoltage
CN105629103A (en) * 2015-12-23 2016-06-01 广州市优普计算机有限公司 Online monitoring method based on transformer substation operation and maintenance network shutdown

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549132A (en) * 1982-08-20 1985-10-22 Hitachi, Ltd. Method of testing and verifying a performance for insulation to ground of a disconnecting switch when breaking a charging current
JPH01285879A (en) * 1988-05-13 1989-11-16 Toshiba Corp High frequency high voltage generating circuit
CN201751858U (en) * 2010-06-17 2011-02-23 国网电力科学研究院 Test loop

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3130212B2 (en) * 1994-10-07 2001-01-31 三菱電機株式会社 Gas insulated switchgear
JPH10253680A (en) * 1997-03-10 1998-09-25 Fuji Electric Co Ltd Test method for short-time withstand current of switchgear
CN101881813B (en) * 2010-06-17 2013-12-04 国网电力科学研究院 Method for simulating GIS transformer substation to produce very fast transient overvoltage (VFTO) and test circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549132A (en) * 1982-08-20 1985-10-22 Hitachi, Ltd. Method of testing and verifying a performance for insulation to ground of a disconnecting switch when breaking a charging current
JPH01285879A (en) * 1988-05-13 1989-11-16 Toshiba Corp High frequency high voltage generating circuit
CN201751858U (en) * 2010-06-17 2011-02-23 国网电力科学研究院 Test loop

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
尹晓芳等: "封闭式组合电器隔离开关产生的过电压", 《中国电机工程学报》 *
高有华等: "快速暂态过电压试验与数值模拟对比分析", 《电机与控制学报》 *

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011157046A1 (en) * 2010-06-17 2011-12-22 国网电力科学研究院 Method for simulating very fast transient overvoltage generation in gas insulated switchgear (gis) transformer substation and test loop thereof
CN102073003A (en) * 2011-02-16 2011-05-25 上海思源高压开关有限公司 Insulation test tool for gas-insulated metal-enclosed switchgear (GIS)
CN102073003B (en) * 2011-02-16 2012-08-08 上海思源高压开关有限公司 Insulation test tool for gas-insulated metal-enclosed switchgear (GIS)
CN102435941A (en) * 2011-09-07 2012-05-02 中国电力科学研究院 Method for simulating very fast transient over-voltage during opening/closing process of isolating switch
CN102565614A (en) * 2012-01-11 2012-07-11 云南电网公司 Alternating voltage loop test method
CN102565614B (en) * 2012-01-11 2014-04-30 云南电网公司 Alternating voltage loop test method
CN102998556A (en) * 2012-10-29 2013-03-27 中国电力科学研究院 Device and method for super-fast transient overvoltage simulation of metal oxide voltage limiter
CN102998556B (en) * 2012-10-29 2016-02-24 中国电力科学研究院 The very fast transient overvoltage simulator of metal oxide pressure-limiting device and method thereof
CN103149545A (en) * 2013-01-29 2013-06-12 华北电力大学 Testing method, testing device, testing equipment and testing system of very fast transient overvoltage (VFTO) sensor
CN103149545B (en) * 2013-01-29 2016-05-11 华北电力大学 The method of testing of VFTO sensor, device, equipment and system
WO2015032343A1 (en) * 2013-09-09 2015-03-12 国家电网公司 Testing system of gis electronic mutual inductor and method therefor
CN104360193B (en) * 2014-11-12 2017-05-17 国家电网公司 Electromagnetic disturbance simulation test platform of transformer substation secondary system
CN104360193A (en) * 2014-11-12 2015-02-18 国家电网公司 Electromagnetic disturbance simulation test platform of transformer substation secondary system
CN104502751A (en) * 2014-12-10 2015-04-08 国家电网公司 Simulation circuit model for acquiring transient potential uplift of GIS (Gas-Insulator Switchgear) device shell
CN104502751B (en) * 2014-12-10 2018-05-29 国家电网公司 A kind of simulation circuit model for obtaining GIS crust of the device dynamic potentials liftings
CN107209221A (en) * 2015-01-21 2017-09-26 西门子公司 Circuit arrangement and high-voltage testing equipment for Hi-pot test
US10345368B2 (en) 2015-01-21 2019-07-09 Siemens Aktiengesellschaft Circuit arrangement for high-voltage tests and high-voltage testing system
CN105301400A (en) * 2015-11-10 2016-02-03 中国电力科学研究院 Ultrahigh-voltage AC equipment operation condition simulation system
CN105956337A (en) * 2016-06-13 2016-09-21 华北电力大学 Equivalent circuit modeling method for turning section of L-shaped pipeline of gas insulated substation
CN106680574A (en) * 2016-12-21 2017-05-17 重庆大学 Over-voltage sensing and data processing method for substation equipment
CN106680574B (en) * 2016-12-21 2019-04-12 重庆大学 A kind of perception of substation equipment overvoltage and data processing method
CN106841713A (en) * 2016-12-30 2017-06-13 平高集团有限公司 A kind of very fast transient overvoltage generation device
CN109270443A (en) * 2018-08-24 2019-01-25 山东理工大学 A kind of fast transient overvoltage overall process efficient emulation system and emulation mode

Also Published As

Publication number Publication date
WO2011157046A1 (en) 2011-12-22
JP5813759B2 (en) 2015-11-17
JP2013529053A (en) 2013-07-11
CN101881813B (en) 2013-12-04

Similar Documents

Publication Publication Date Title
Ribeiro et al. Power systems signal processing for smart grids
Kaipia et al. Possibilities of the low voltage DC distribution systems
CN103296673B (en) One ± 800kV extra-high voltage direct-current transmission engineering system adjustment method
CN104101799B (en) Modular distribution network dynamic simulation and terminal test integration system
EP3045930B1 (en) Testing system of gis electronic mutual inductor and method therefor
CN103091609B (en) A kind of GIS local discharge on-line monitoring device performance detecting system and method thereof
CN105842583B (en) Distribution single-phase earthing Section Location based on faulted phase voltage and jump-value of current
CN100568011C (en) Generator injected type stator ground protection combination type analog experiment panel and test method
CN105403810B (en) A kind of fault line selection for indirectly grounding power system device universal test system and method
Lopes et al. Fault location on transmission lines little longer than half-wavelength
Yang et al. Development of converter based reconfigurable power grid emulator
KR101553773B1 (en) Apparatus for verifying lightning arrester of high voltage direct current transmission system
Liu et al. Dynamic state estimation-based fault locating on transmission lines
CN102298671B (en) Simulation method for realizing replay of grid fault
Artale et al. Smart interface devices for distributed generation in smart grids: The case of islanding
CN102780234B (en) High-voltage electric debugging method for power generation project
CN102435941A (en) Method for simulating very fast transient over-voltage during opening/closing process of isolating switch
CN106093591B (en) A kind of isolated neutral capacitance current of distribution network measuring system and method
CN105429137B (en) The method that distribution network closed loop turns power supply
JP5813759B2 (en) Method for simulating the occurrence of very fast transient overvoltages in gas insulated switchgear (GIS) substations and this test circuit
CN101958530A (en) Main transformer differential protection CT polarity check method of pumped storage power station
CN204537573U (en) A kind of electric system 1:1 electric pressure distribution singlephase earth fault analogue test platform
CN104483643B (en) Modeling method based on detection platform of fault indicator for physical simulation of power distribution network
CN103472393B (en) A kind of high-voltage ride through of wind power generating set test macro
CN102520288A (en) Primary-rising based current differential protection synchronization performance testing system and testing method

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model