CN202395314U - Electric interlocking device of high voltage ring net cabinet of European preassembled transformer substation - Google Patents
Electric interlocking device of high voltage ring net cabinet of European preassembled transformer substation Download PDFInfo
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- CN202395314U CN202395314U CN2011205277737U CN201120527773U CN202395314U CN 202395314 U CN202395314 U CN 202395314U CN 2011205277737 U CN2011205277737 U CN 2011205277737U CN 201120527773 U CN201120527773 U CN 201120527773U CN 202395314 U CN202395314 U CN 202395314U
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Abstract
The utility model discloses an electric interlocking device of a high voltage ring net cabinet of an European preassembled transformer substation. The electric interlocking device comprises a high voltage inlet wire cabinet (H1), a high voltage power ring net cabinet (H2), a high voltage illumination maintenance ring net cabinet (H3), a lower voltage power cabinet (L1), a low voltage illumination maintenance cabinet (L2) and an interlocking device actuating mechanism electromagnet. The electric interlocking device is characterized in that the high voltage inlet wire cabinet (H1), the high voltage power ring net cabinet (H2) and the high voltage illumination maintenance ring net cabinet (H3) are fixedly installed on a frame in parallel; the lower voltage power cabinet (L1) and the low voltage illumination maintenance cabinet (L2) are installed on a frame fixedly in parallel; and the interlocking device actuating mechanism electromagnet is installed besides a high voltage inlet wire cabinet (H1) isolating switch operation mechanism. The utility model aims at designing a more developed electric interlocking device; and in practical use, the 'five prevention' requirements of the high voltage switch cabinet can be met completely.
Description
Technical field
The utility model relates to the preassembled transformer station field, relates in particular to a kind of European preassembled transformer station high pressure ring cabinet electric interlocking installation.
Background technology
Preassembled transformer station is a kind of with high voltage switchgear, distribution transformer and the low-voltage distribution equipment prefabricate close-coupled controller switching equipment by certain connection plan composition one, is about to functions such as high powered, transformer step-down, low-voltage distribution and organically combines.
The call of preassembled transformer station at home and abroad and disunity, domestic being referred to as " prefabricated substation ", " box-type substation ".Then be " box type high-voltage receives electric unit ", " compact substation " etc. abroad.International Electrotechnical Commission (IEC) also weighs and consider when this series products of name.The IEC draft standard is " Factory Assembled Compact Substation " (the compact transformer station of factory-assembled formula) the earliest; After change " Prefabricated Compact Substation " (prefabricated compact transformer station) and " Prefabricated Substation " (prefabricated transformer station) into, finally formally issue with " high/low voltage pre-installed type transformer station " standard.
Along with expanding economy, bigger variation has also taken place in the power supply general layout, the sort of concentrated step-down of past, and long mode apart from distribution has restricted urban electricity supply greatly, and has reduced the economic benefit of electric company.Reason is: radius of electricity supply is big, and line loss increases along with the increase of power load greatly, and power supply quality also reduces greatly simultaneously.Reduce line loss, guarantee power supply quality, must improve supply power voltage, high pressure directly gets into the urban district, gos deep into load center, forms the power supply general layout of " high powered-transformer step-down-low-voltage distribution ".Have data to show, supply power voltage is risen to 10KV from 380V, can reduce the loss of circuit 60%, reduce gross investment and copper consumption 52%, its economic benefit is considerable.
Preassembled transformer station is public distribution, skyscraper, residential quarters, park adaptable across the city; Also be applicable to oil field, industrial and mining enterprises and construction site etc.; Being a kind of brand-new transformer station that after civil engineering transformer station, emerges, is the necessary equipment of urban distribution network construction and upgrading.Have that complete property is strong, volume is little, take up an area of less, can go deep into load center, improve power supply quality, reduce loss, send short, series of advantages such as addressing is flexible, strong, easy for installation to environmental suitability, security of operation and small investment, instant effect of electricity cycle.
Because preassembled transformer station (becoming hereinafter to be referred as case) has high voltage switchgear, so at the beginning of design, just must satisfy " five is anti-" requirement of high-tension switch cabinet.
So-called " five is anti-" is the abbreviation that prevents five kinds of electric misoperations in the electric power system.According to statistics, the misoperation fault of electric power system has and belongs to five kinds of misoperations more than 80%, promptly divides, mistake closes circuit breaker by mistake; The on-load disconnecting switch operation; Charged hanging earthing conductor or splice grafting ground switch; Band earth connection switch closes a floodgate; Mistakenly entering charged chamber.Therefore various switchgear cabinets must have certain operating sequence, otherwise will cause serious consequence even accident occur.For this reason, high-tension switch cabinet should have " five is anti-" function.That is:
1. prevent the on-load branch, close isolating switch and stab contact;
2. prevent that mistake from dividing, mistake is closed circuit breaker, on-load switch and contactor;
3. prevent to close when earthed switch is in closing position and close circuit breaker, on-load switch etc.;
4. prevent charged mistiming splice grafting ground switch;
5. prevent the mistakenly entering into charged compartment.
" five is anti-" function can realize through locking device.Locking device is a kind of a kind of device of in high-tension switch cabinet, installing to prevent electric misoperation.When locking device can guarantee to press the established procedure operation, switch cubicle can be operated; Otherwise switch cubicle must not be operated.So-called " procedure operation " is meant the operating sequence by the artificial regulation of requirement of power equipment safety.
Locking device can be divided into two types in mechanical locking device and electric blocking device.Mechanical locking device all adopts components of machine such as traditional lever, connecting rod, baffle plate, slide block to constitute.The electric blocking device is meant electromagnetic lock, exclusive circuit etc.
Locking device can be divided into mandatory and non-imposed two kinds.Mandatory locking device makes various operations to operate by regulated procedure, otherwise can't carry out.Non-imposed locking device is a kind of indicative measure, like order board (red green board turning), high voltage display device.In fact, the order board is also by mandatory and non-imposed two kinds.Use three function keys and order board, then constitute mandatory mode; Adopt order board and general control switch then to constitute non-imposed mode.
In above-mentioned " five anti-", only wrong branch mistake is closed circuit breaker, contactor, on-load switch can adopt non-imposed locking device, and other all adopt mandatory locking.
In actual design and in producing, be easy to accomplish high pressure five anti-requirements for the case change of having only a transformer, but for the specific type that two transformers are arranged in the case change, high pressure five anti-requirements are difficult to accomplish perfection.Main difficult point concentrates on and prevents the on-load branch, closes on isolating switch and the stab contact.Because the case for dual transformer becomes; Three corresponding high pressure ring cabinets are arranged; Wherein H1 is the high pressure incoming line cabinet, and H2, H3 are the high-voltage terminal cabinet, the interlocking problem between H1, H2, three high pressure ring cabinets of H3; Generally all be to interlock between H1 and H2 or the H3, the another one high-voltage board adopts the form of order board to carry out.Perhaps all adopt the form of order board to carry out.If the operator relatively is short of for the knowledge of high-voltage electrical apparatus aspect, is easy to ignorance and orders board and carry out misoperation.This is very serious safety problem for whole high-pressure system, very easily causes the generation of accident.
The utility model content
Uprise the shortcoming and defect of pressing interlock between the ring main unit to existing case, the purpose of the utility model is to design more ripe electric interlocking installation, in practical effect, satisfies " five is anti-" requirement of high-tension switch cabinet fully.
For realizing above purpose; The technical scheme that the utility model adopts: a kind of European preassembled transformer station high pressure ring cabinet electric interlocking installation, it comprises: high pressure incoming line cabinet (H1), high voltage power ring main unit (H2), high pressure illumination maintenance ring main unit (H3), low-voltage-powered cabinet (L1), low-voltage lighting maintenance cabinet (L2); And interlock actuator electromagnet; It is characterized in that: high pressure incoming line cabinet (H1), high voltage power ring main unit (H2) and the parallel connection of high pressure illumination maintenance ring main unit (H3) are fixedly mounted on the framework; Low-voltage-powered cabinet (L1) and the parallel connection of low-voltage lighting maintenance cabinet (L2) are fixedly mounted on the framework; Interlock actuator electromagnet is installed in by high pressure incoming line cabinet (H1) isolator operating mechanism.
In the secondary control loop of high pressure incoming line cabinet (H1), high voltage power ring main unit (H2) and high pressure illumination maintenance ring main unit (H3), adopted be mutually related normally-closed contact and charged display unit, made between the high pressure ring cabinet and can enforceablely prevent the on-load branch, close isolating switch.
Described high pressure incoming line cabinet (H1) adopts the GN19-12/630-25 isolating switch and joins the CS6-1T operating mechanism, and at the other electromagnet of installing of operating mechanism.
Described high voltage power ring main unit (H2) high-voltage terminal cabinet adopts FZRN25-12D/T125-31.5 series indoor high-voltage vacuum switch-fuse combination.
Described high pressure illumination maintenance ring main unit (H3) high-voltage terminal cabinet adopts FZRN25-12D/T125-31.5 series indoor high-voltage vacuum switch-fuse combination.
The beneficial effect of the utility model:
Simple in structure, reliable, the convenient operating maintenance of a, locking device;
B, do not increase the complexity of normal running and accident treatment;
C, the branch that does not influence switch, closing speed and characteristic;
D, do not influence the operate as normal of relaying protection and signalling;
E, power supply separate with relaying protection, control, signal circuit, do not influence the work in other loops;
F, enforceablely prevent the on-load branch, close isolating switch, accomplished interlocking action between three high pressure ring cabinets.
Description of drawings
Fig. 1 is the floor plan of the utility model;
Fig. 2 is the schematic diagram of the utility model;
Position signal when Fig. 3 (a) cuts off the power supply for electromagnet;
Position signal when Fig. 3 (b) switches on for electromagnet.
In the drawings, H1, high pressure incoming line cabinet; H2, high voltage power ring main unit; H3, high pressure illumination maintenance ring main unit; L1, low-voltage-powered cabinet; L2, low-voltage lighting maintenance cabinet.
Embodiment
Below in conjunction with a preferred embodiment and accompanying drawing the utility model is described further, to help understanding the utility model content.
As shown in Figure 1, the basic assembly relation of the utility model is: high pressure incoming line cabinet (H1), high voltage power ring main unit (H2) and the parallel connection of high pressure illumination maintenance ring main unit (H3) are fixedly mounted on the framework; Low-voltage-powered cabinet (L1) and the parallel connection of low-voltage lighting maintenance cabinet (L2) are fixedly mounted on the framework; This framework inside is set side by side with two ceiling type smoke alarms, and plug-in air-conditioner outdoor unit is arranged.The case that this framework inside also is equipped with two transformers becomes, and the transformer model is respectively: SCB10-500KVA, SC10-50KVA is the self cooling dry-type transformer of poured with epoxy resin.
Fig. 1-the 2nd, the schematic diagram of whole electric interlocking installation; When the vacuum load switch of high voltage power ring main unit H2 and high pressure illumination maintenance ring main unit H3 closes a floodgate; The position of actuator's electromagnet of electric interlocking installation is shown in Fig. 3 (a); Withstand on the baffle plate of CS6-1T operating mechanism, the isolating switch outage of can't operating a switch this moment, satisfy can not on-load disconnection isolating switch requirement; When the vacuum load switch of high voltage power ring main unit H2 or high pressure illumination maintenance ring main unit H3 breaks off one of them; Because the normally-closed contact of two vacuum load switchs is connected; Has only one group of closing of contact; But whole system is broken off, and having any one load to exist all can't break off isolating switch by on-load; Have only the normally-closed contact of working as high voltage power ring main unit H2, two vacuum load switchs of high pressure illumination maintenance ring main unit H3 all closed; Promptly do not have under the situation of any load; The position of electromagnet just can be shown in Fig. 3 (b); No longer limit the baffle plate of CS6-1T operating mechanism, make isolating switch can normally divide, close.
Also have the utility model to rebuild a loop, avoided loops such as control, protection, signal, do not influence the work in other loops.
More than the European preassembled transformer station high pressure ring cabinet electric interlocking installation that the utility model provided has been carried out detailed introduction; Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (4)
1. European preassembled transformer station high pressure ring cabinet electric interlocking installation, it comprises: high pressure incoming line cabinet (H1), high voltage power ring main unit (H2), high pressure illumination maintenance ring main unit (H3),
Low-voltage-powered cabinet (L1), low-voltage lighting maintenance cabinet (L2); And interlock actuator electromagnet; It is characterized in that: high pressure incoming line cabinet (H1), high voltage power ring main unit (H2) and the parallel connection of high pressure illumination maintenance ring main unit (H3) are fixedly mounted on the framework; Low-voltage-powered cabinet (L1) and the parallel connection of low-voltage lighting maintenance cabinet (L2) are fixedly mounted on the framework; Interlock actuator electromagnet is installed in by high pressure incoming line cabinet (H1) isolator operating mechanism.
2. a kind of European preassembled transformer station high pressure ring cabinet electric interlocking installation according to claim 1; It is characterized in that: described high pressure incoming line cabinet (H1) adopts the GN19-12/630-25 isolating switch and joins the CS6-1T operating mechanism, and at the other electromagnet of installing of operating mechanism.
3. a kind of European preassembled transformer station high pressure ring cabinet electric interlocking installation according to claim 1 is characterized in that: described high voltage power ring main unit (H2) high-voltage terminal cabinet adopts FZRN25-12D/T125-31.5 series indoor high-voltage vacuum switch-fuse combination.
4. a kind of European preassembled transformer station high pressure ring cabinet electric interlocking installation according to claim 1 is characterized in that: described high pressure illumination maintenance ring main unit (H3) high-voltage terminal cabinet adopts FZRN25-12D/T125-31.5 series indoor high-voltage vacuum switch-fuse combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205277737U CN202395314U (en) | 2011-12-16 | 2011-12-16 | Electric interlocking device of high voltage ring net cabinet of European preassembled transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205277737U CN202395314U (en) | 2011-12-16 | 2011-12-16 | Electric interlocking device of high voltage ring net cabinet of European preassembled transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395314U true CN202395314U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205277737U Expired - Fee Related CN202395314U (en) | 2011-12-16 | 2011-12-16 | Electric interlocking device of high voltage ring net cabinet of European preassembled transformer substation |
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| Country | Link |
|---|---|
| CN (1) | CN202395314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412226A (en) * | 2013-08-27 | 2013-11-27 | 国家电网公司 | State monitoring system of ring main unit |
-
2011
- 2011-12-16 CN CN2011205277737U patent/CN202395314U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412226A (en) * | 2013-08-27 | 2013-11-27 | 国家电网公司 | State monitoring system of ring main unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20141216 |
|
| EXPY | Termination of patent right or utility model |