CN202019230U - Three-phase linkage current switching device - Google Patents
Three-phase linkage current switching device Download PDFInfo
- Publication number
- CN202019230U CN202019230U CN2011201429694U CN201120142969U CN202019230U CN 202019230 U CN202019230 U CN 202019230U CN 2011201429694 U CN2011201429694 U CN 2011201429694U CN 201120142969 U CN201120142969 U CN 201120142969U CN 202019230 U CN202019230 U CN 202019230U
- Authority
- CN
- China
- Prior art keywords
- busbar
- switching device
- current
- plate
- generation
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- KYIKRXIYLAGAKQ-UHFFFAOYSA-N abcn Chemical compound C1CCCCC1(C#N)N=NC1(C#N)CCCCC1 KYIKRXIYLAGAKQ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
A three-phase linkage current switching device relates to an improvement on a current switching device, can adapt to the present domestic current application situation, considerably reduces the operation strength and improves the security and the convenience, can prevent misoperation, and is used for connecting and switching a bypass current and a No.1 main transformer, as well as the bypass current and a No.2 main transformer. The switching device comprises a rectangular isolated movable plate and a fixed plate, wherein A, B, C and D conductive socket groups are uniformly distributed on the fixed plate in the cross direction, the intervals among the conductive socket groups are consistent, and three conductive sockets are arranged in each conductive socket group; and A, B, C and D overlap sockets are arranged on the movable plate in the cross direction, and the original positions of the four overlap sockets on the movable plate are consistent with those of 0# conductive sockets in the conductive socket groups on the fixed plate; the width of the overlap sockets is L3, and the sum of L2 and double L1 is larger than the L3, and the L3 is larger than the L1. By adopting the three-phase linkage current switching device, short circuit, exit, access and short circuit removal which are conventionally completed step by step are finished in one step to avoid misoperation.
Description
Technical field
The utility model relates to the protection of the main transformer differential in electric power system by-pass switch current switching device, relates in particular to the improvement to the current switching device.
Background technology
The many current circuits of transformer station are in operation and need switch, and main transformer switch and the current circuit switching of by-pass switch, the current circuit of bus differential protection protected as main transformer differential switch; Short circuit withdraws under the by-pass current normal condition, when needed, can cut to " generation No. 1 main transformer " or " generation No. 2 main transformers " position, but in charged handoff procedure, forbid to open a way.These operations are undertaken by the person on duty, are generally undertaken by the current switching pressing plate.These pressing plates generally are divided into four phases (ABCN), and binding post is divided into two-layer or three layers, when operation, carry out three-phase short circuit ground connection earlier, withdraw from the primary current loop, drop into the current circuit after switching, and remove three-phase short circuit ground connection again, and the operation that has reaches 16 step by step.
At present, domestic protective device adopts the input of input that pressing plate carries out switch divide-shut brake loop and disconnection, switching value and withdraws from and the switching of current circuit.Fig. 4 is for being main transformer differential protection by-pass switch current switching pressing plate, and binding post 4 is divided into three rows in this presser device, wherein in the middle of a row be the by-pass current input circuit, be illustrated as the short circuit state, promptly neither generation No. 1 main transformer also not for No. 2 main transformers.
When by-pass switch generation No. 1 main transformer switch, need the by-pass switch electric current is inserted No. 1 main transformer differential protection, handoff procedure is:
1, disconnects connection pressing plate 3 between the phase of upper strata " AB ";
2, " AB " is connected pressing plate 3 changes and throws to generation " No. 1 main transformer " position;
3, disconnect connection pressing plate 3 between the phase of upper strata " BC ";
4, " BC " is connected pressing plate 3 changes and throws to generation " No. 1 main transformer " position;
5, disconnect connection pressing plate 3 between the phase of upper strata " CN ";
6, " CN " connected pressing plate 3 and change throwing to generation " No. 1 main transformer " position;
7, disconnect connection pressing plate 3 between the upper strata " N ground ";
8, " N ground " is connected pressing plate 3 and change throwing to generation " No. 1 main transformer " position;
9, take off connection pressing plate 3 between lower floor " AB " phase;
10, take off connection pressing plate 3 between lower floor " BC " phase;
11, take off connection pressing plate 3 between lower floor " CN " phase;
12, take off connection pressing plate 3 between the lower floor " N ground ".
These operational risks are high, any step goes wrong, all may cause the current circuit open circuit, the phenomenon and current circuit definitely can not be opened a way in running, because this operates very very complicated, the person on duty has the psychology of fear to this operation, and misoperation very easily takes place in the existence of the psychology of fear.
External protective device does not generally adopt pressing plate, and pressing plate is not adopted in the current switching loop yet.The protection (as SEL series, SLP series) that U.S. GE company produces adopts the ConvertBox of similar three-phase plug-in strip to carry out the handover operation of current circuit; the protection (as RAZFE series, REL system) that Sweden ABB AB produces adopts test switch to switch; transfer to electric current to insert handle during operation; the automatic short circuit in former loop; insert handle at other jack again, new current circuit inserts the loop.But costing an arm and a leg of at present external protective device, operating environment requires high.Directly apply to domestic application places, need carry out renovating of other equipment, its workload, cost are very big.
The utility model content
The utility model is at above problem, provides a kind of and can adapt to domestic application present situation at present, and can alleviate manipulation strength significantly, improves processing safety, convenience, and the electric current three that misoperation can not the take place switching device shifter that links.
The technical solution of the utility model is: be used for realizing being connected switching between by-pass current and generation No. 1 main transformer, generation No. 2 main transformers, described switching device shifter comprises the moving plate that rectangle insulate and decides plate;
Described decide plate transversely be evenly equipped with A, B, four groups of busbar groups of C, N, each organizes spacing unanimity between the busbar group, each is organized and establishes three busbars in the busbar group, described three busbars are provided with in proper order by 1# busbar, 0# busbar and 2# busbar, spacing distance unanimity between described 1# busbar, 0# busbar and the 2# busbar, described spacing distance is L1, and described 0# busbar width is L2; 1# busbar in described each busbar group connects No. 1 main transformer of described generation respectively, and the 0# busbar in described each busbar group connects described by-pass current respectively, and the 2# busbar in described each busbar group connects No. 2 main transformers of described generation respectively;
Described moving plate transversely be provided with four overlap joint rows of A, B, C, N, the initial position transversely that described four overlap joints come described moving plate is decided respectively to organize on the plate in the busbar group 0# busbar in that to decide plate initial position transversely consistent with described respectively; And described overlap joint row's width is L3, described L2+2 * L1＞L3＞L1.
On described moving plate, also be provided with elastic pressuring clamping device.
Overlap joint row on the moving plate of the utility model in different positions, can realize three kinds of different connected modes.When being in meta, because its width less than 0# busbar width and both sides spacing distance sum, has been realized the short circuit pattern.And in both sides either side when motion, can realize being connected of by-pass current and this side main transformer.The utility model is changed into the interlock operation with the pressing plate of original phase-splitting operation, the short circuit that original substep is carried out, to withdraw from, drop into, remove the short circuit operation change be to carry out in a step, improves operational quality, prevents that current switching is unreliable, simplify operating procedure, prevent the generation of misoperation fault.
The utility model can be a step from multi-step simplified with showing electric current pressing plate handover operation, reduces person on duty's operating procedure, alleviates the person on duty and operates burden, reduce person on duty's operation easier, eliminate the fear heart of person on duty, guarantee operational quality, stop the generation of misoperation the current switching clamp operation.Can change the existing switching pressing plate of transformer station, eliminate operation hidden danger.New throwing transformer station or former transforming plant protecting are changed and can be adopted this novel interlock to switch pressing plate when transforming, and improve safety operation level.
Description of drawings
Fig. 1 is a perspective view of the present utility model;
1 is to decide plate among the figure, the 2nd, and moving plate, the 21st, overlap joint row A, the 22nd, overlap joint row B, the 23rd, overlap joint row C, the 24th, overlap joint row N;
Fig. 2 is a structural representation of the present utility model;
11 is A busbar groups among the figure, the 12nd, and B busbar group, the 13rd, C busbar group, the 14th, N busbar group, the 110th, the A gap, the 11.1st, the A1# busbar, the 11.2nd, A2# busbar, 11.n are the A0# busbars, the 120th, B gap, the 12.1st, B1# busbar, the 12.2nd, B2# busbar, 12.n be the B0# busbar, the 130th, C gap, the 13.1st, C1# busbar, 13.2 be the C2# busbar, 13.n is the C0# busbar, the 140th, and the N gap, 14.1 be the N1# busbar, the 14.2nd, N2# busbar, 14.n are the N0# busbars;
Fig. 3 is the schematic diagram of the utility model background technology state
3 is connecting plates among the figure, the 4th, and binding post.
Embodiment
The utility model is used for realizing being connected switchings between by-pass current and generation No. 1 main transformer, generation No. 2 main transformers shown in Fig. 1-2, and described switching device shifter comprises moving plate 2 that rectangle insulate and decides plate 1;
Described decide plate 1 transversely be evenly equipped with A, B, C, four groups of busbar groups of N (A busbar group 11, B busbar group 12, C busbar group 13, N busbar group 14), each organizes spacing unanimity between the busbar group, each is organized and establishes three busbars in the busbar group, described three busbars are pressed the 1# busbar, 0# busbar and 2# busbar are provided with in proper order, described 1# busbar, spacing distance unanimity between 0# busbar and the 2# busbar, described spacing distance is L1 (i.e. A gap 110 among the figure, B gap 120, C gap 130 and N gap 140 are L1), described 0# busbar width is that L2 (is A0# busbar 11.n, B0# busbar 12.n, C0# busbar 13.n, the width of N0# busbar 14.n is L2); 1# busbar in described each busbar group (A1# busbar 11.1, B1# busbar 12.1, C1# busbar 13.1, N1# busbar 14.1) connects No. 1 main transformer of described generation respectively, 0# busbar in described each busbar group connects described by-pass current respectively, and the 2# busbar in described each busbar group (A2# busbar 11.2, B2# busbar 12.2, C2# busbar 13.2, N2# busbar 14.2) connects No. 2 main transformers of described generation respectively;
Transversely be provided with four overlap joint rows of A, B, C, N (overlap joint row A21 at described moving plate 2, overlap joint row B22, overlap joint row C23, overlap joint row N24), described four overlap joints initial position transversely of coming described moving plate 2 is decided respectively to organize on the plate 1 in the busbar group 0# busbar in that to decide plate initial position transversely consistent with described respectively; And described overlap joint row's (overlap joint row A21, overlap joint row B22, overlap joint row C23, overlap joint row N24) width is L3, described L2+2 * L1＞L3＞L1.
On described moving plate 2, also be provided with elastic pressuring clamping device.
During concrete the making, device of the present utility model is divided into fixation kit and movable component two parts.
On the fixation kit (deciding plate 1) four groups of copper sheets are installed, are respectively A, B, C and N mutually.Every group of copper sheet has three, is respectively (is example with bypass generation No. 1, No. 2 main transformer current circuits) " generation No. 1 main transformer A phase current ", " rest position ", " generation No. 2 main transformer A phase currents ".Wherein " rest position " by connecting line meet A, B, C, N link to each other with earth terminal.
Movable component (upper section among the last figure) is equipped with four copper sheets, connects by-pass switch A, B, C, N phase current respectively.
Movable component and fixation kit rely closely, and compress by the spring casting die, guarantee that contact is good.
Under the normal condition, movable component is fixed on the centre position of movable component, i.e. rest position, and by-pass current is by shorting stub short circuit and ground connection.
During for No. 1 main transformer, movable component moves to the left, and by-pass current inserts No. 1 main transformer protection under the short circuit state, when arriving the fixed position, disconnects short circuit.
The utility model apparatus features is:
Simple in structure: it is simple that pressure plate structure is switched in the electric current interlock, finishes handoff procedure by the motion of movable component, has only a movable part, reliable from last safety action simple in structure.
Reliable in action: the electric current interlock is switched each parts of pressing plate and is connected reliably, in each position locking device is arranged all, and not opening the locking device pressing plate can not switch, and when normally moving malfunction can not take place.Because current circuit open circuit phenomenon can not take place less than the width of movable component copper sheet in the interval of three positions on the fixation kit in the handoff procedure.
Switch flexibly: the movable component flexible movements, and contact is good, and feel is preferably arranged.Open locking device, can finish whole handoff procedure once pushing away gently.
It is easy for installation: because the position that pressing plate is installed in original switching pressing plate is switched in the electric current interlock, after promptly taking off former single-phase switching pressing plate, pressing plate is switched in the electric current interlock to be enclosed within on the former binding post, therefore do not change the primary current circuit connection, install and change conveniently, workload is few, does not need to carry out the current circuit test after the installation.
Highly versatile: pressing plate is switched in the electric current interlock should stronger versatility, adapts to the protection of all kinds, each producer.As a locked position, only keep two positions, then can be used as the electric current input and withdraw from the pressing plate use.
Elegant in appearance: it is a rectangle ConvertBox that pressing plate is switched in electric current interlock, adopts that engineering plastics are moulding to form, and operation mark is arranged on the panel, elegant in appearance, does not influence closing of protection screen door after the installation.
Claims (2)
1. electric current three switching device shifter that links is used for realizing being connected switching between by-pass current and generation No. 1 main transformer, generation No. 2 main transformers, it is characterized in that described switching device shifter comprises the moving plate that rectangle insulate and decides plate;
Described decide plate transversely be evenly equipped with A, B, four groups of busbar groups of C, N, each organizes spacing unanimity between the busbar group, each is organized and establishes three busbars in the busbar group, described three busbars are provided with in proper order by 1# busbar, 0# busbar and 2# busbar, spacing distance unanimity between described 1# busbar, 0# busbar and the 2# busbar, described spacing distance is L1, and described 0# busbar width is L2; 1# busbar in described each busbar group connects No. 1 main transformer of described generation respectively, and the 0# busbar in described each busbar group connects described by-pass current respectively, and the 2# busbar in described each busbar group connects No. 2 main transformers of described generation respectively;
Described moving plate transversely be provided with four overlap joint rows of A, B, C, N, the initial position transversely that described four overlap joints come described moving plate is decided respectively to organize on the plate in the busbar group 0# busbar in that to decide plate initial position transversely consistent with described respectively; And described overlap joint row's width is L3, described L2+2 * L1＞L3＞L1.
2. the electric current three according to claim 1 switching device shifter that links is characterized in that, also is provided with elastic pressuring clamping device on described moving plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201429694U CN202019230U (en) | 2011-05-06 | 2011-05-06 | Three-phase linkage current switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201429694U CN202019230U (en) | 2011-05-06 | 2011-05-06 | Three-phase linkage current switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202019230U true CN202019230U (en) | 2011-10-26 |
Family
ID=44812897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201429694U Expired - Fee Related CN202019230U (en) | 2011-05-06 | 2011-05-06 | Three-phase linkage current switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202019230U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214519A (en) * | 2011-05-06 | 2011-10-12 | 江苏省电力公司扬州供电公司 | Current three-phase linked switching device |
| CN106208359A (en) * | 2016-09-08 | 2016-12-07 | 山东省科学院海洋仪器仪表研究所 | Double loop power supply socket apparatus for fast switching |
-
2011
- 2011-05-06 CN CN2011201429694U patent/CN202019230U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214519A (en) * | 2011-05-06 | 2011-10-12 | 江苏省电力公司扬州供电公司 | Current three-phase linked switching device |
| CN102214519B (en) * | 2011-05-06 | 2015-11-25 | 江苏省电力公司扬州供电公司 | A kind of three-phase linkage current switching device |
| CN106208359A (en) * | 2016-09-08 | 2016-12-07 | 山东省科学院海洋仪器仪表研究所 | Double loop power supply socket apparatus for fast switching |
| CN106208359B (en) * | 2016-09-08 | 2018-08-14 | 山东省科学院海洋仪器仪表研究所 | Double loop power supply socket apparatus for fast switching |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101297449B (en) | A transmission system | |
| CN201413939Y (en) | Electrical interlocking system of inlet wire and interconnection switch for switch apparatus | |
| CN102842867A (en) | Method for electrically disconnecting or connecting disconnector with drainage wire between buses | |
| CN202019230U (en) | Three-phase linkage current switching device | |
| CN105680425B (en) | Plug-in type current switching terminal for protective relaying device | |
| CN105006881B (en) | One kind hauling oneself willingly into runback control system | |
| CN105162088B (en) | A kind of power distribution station automatic fault detection system of 10kV cable system feeder line | |
| CN108199484B (en) | Method and device for rapidly disaggregating ring network | |
| CN207490360U (en) | A kind of low-voltage distribution cabinet | |
| CN106655171B (en) | Middle breaker phase-controlled strategy automatic selecting method under 3/2 mode of connection | |
| CN206023211U (en) | A kind of little bar coupler blocking device of direct current | |
| CN102214519A (en) | Current three-phase linked switching device | |
| CN204886396U (en) | Haul oneself willingly into runback control system | |
| CN202009236U (en) | Single-bus segmental running control device of substation | |
| CN204011150U (en) | Low-voltage distribution cabinet interlock control system | |
| CN104508933A (en) | Bipolar Universal Converter Station And Mtdc System Thereof | |
| CN205724893U (en) | A kind of two mother cabinet electrical interlocks control systems of three inlet wires | |
| CN202018895U (en) | Three-phase current switching plate | |
| CN204794328U (en) | Three -phase electricity dual supply automatic switching control equipment | |
| CN205159189U (en) | Steady type isolator of switch | |
| CN205283094U (en) | A plug -in type current switching terminal for overload protection device | |
| CN205070408U (en) | Fortune side's discernment of generating line size and restraint coefficient selecting arrangement | |
| CN204615165U (en) | A kind of AC metal sealed switch apparatus with bypass functionality | |
| CN103258668A (en) | Novel bus earthing knife-switch control method and system | |
| CN205211625U (en) | Prevent switch mistake and close circuit system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ELECTRIC POWER COMPANY STATE ELECTRIC NET Effective date: 20130515 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130515 Address after: 225009 Weiyang Road, Jiangsu, China, No. 179, No. Patentee after: Yangzhou Power Supply Company of Jiangsu Electric Power Company Patentee after: Jiangsu Electric Power Company Patentee after: State Grid Corporation of China Address before: 225009 Weiyang Road, Jiangsu, China, No. 179, No. Patentee before: Yangzhou Power Supply Company of Jiangsu Electric Power Company |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20180506 |