CN102684097A - Pre-magnetizing medium-voltage power distribution device - Google Patents
Pre-magnetizing medium-voltage power distribution device Download PDFInfo
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- CN102684097A CN102684097A CN2012101928969A CN201210192896A CN102684097A CN 102684097 A CN102684097 A CN 102684097A CN 2012101928969 A CN2012101928969 A CN 2012101928969A CN 201210192896 A CN201210192896 A CN 201210192896A CN 102684097 A CN102684097 A CN 102684097A
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- vacuum contactor
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Abstract
The invention relates to a pre-magnetizing medium-voltage power distribution device. An integrated design scheme is adopted. The device is divided into four chambers; a vacuum contactor, a pre-magnetizing branch bus bar, a power supply branch bus bar, a current transformer, a voltage transformer and a grounding switch are arranged in a pre-magnetizing and cable chamber; a main bus bar is independently arranged in a bus bar chamber; a pre-magnetizing controller is independently arranged in a control chamber; a vacuum breaker is arranged in a handcar chamber, thereby being convenient to operate; one end of the vacuum breaker is connected with the main bus bar while the other end is connected with the power supply branch bus bar through the current transformer; one end of the vacuum contactor is connected with the main bus bar while the other end is connected with the pre-magnetizing branch bus bar; and the coils of the vacuum contactor and the vacuum breaker are connected with the pre-magnetizing controller. The pre-magnetizing and the independent power supply of a high-capacity transformer are realized; the whole volume is reduced; the cost is lowered; the limited space is saved for arranging other important equipment; the control circuit is simple; the overhauling is convenient; the accident risk is reduced; and the reliability is increased.
Description
Technical field
The present invention relates to a kind of distribution technique, particularly a kind of pre-magnetizing medium-voltage distribution device.
Background technology
Along with the ship electric power plant capacity increases, load equipment increases and the continuous of full electric propulsion system ship popularized; Traditional low-voltage power supply mode can not meet the demands; The employing of medium-pressure electricity supply system has solved this demand, adapts to boats and ships development trend requirements such as station capacity increase fully.Thereupon, the medium-voltage distribution plate has obtained general application.
In the medium-pressure electricity supply system, along with the increase of load capacity, the use of high-power transformer is more and more general.Can produce bigger magnetizing inrush current when high-power transformer is directly thrown electrical network, cause power network fluctuation, possibly cause the switch mis-jumping lock, the continuity of destruction system power supply is brought the stability problem of system.For avoiding the appearance of this phenomenon, in the medium-voltage distribution plate, adopted a kind of mode of transformer pre-magnetizing, to reduce no-load transformer combined floodgate magnetizing inrush current and transient state time.
Existing medium-voltage distribution plate pre-magnetizing design mainly contains following characteristics:
(1). generally adopt the vacuum circuit-breaker cabinet to add the design of vacuum contactor cabinet, totally 2 screens are formed, and accomplish the design of high-power transformer distribution;
(2). the vacuum circuit-breaker cabinet is accomplished the high-power transformer power supply.The vacuum contactor cabinet is accomplished the pre-magnetizing transformer-supplied, carries out pre-magnetizing;
Existing medium-voltage distribution plate pre-magnetizing design mainly contains following shortcoming:
(1). adopt independently vacuum circuit-breaker cabinet and vacuum contactor cabinet, two cabinets take very big space, and the integral layout of hull is brought very big inconvenience;
(2). two cabinets are independent, cause the pre-magnetizing control circuit separately, and line design is complicated, give maintenance, safeguard and bring very big inconvenience.
Summary of the invention
The present invention be directed to the present pre-magnetizing power distribution cabinet big problem that takes up room, proposed a kind of pre-magnetizing medium-voltage distribution device, have independently power supply capacity, through the effective conserve space of this patent design, the problem of solution spatial placement.
Technical scheme of the present invention is: a kind of pre-magnetizing medium-voltage distribution device; Device is divided into pre-magnetizing and cable vault, bus-bar room, control room and handcart chamber four chambers district, power supply branch busbar, detecting element current transformer and the voltage transformer, the earthed switch that have pre-magnetizing distribution executive item vacuum contactor to be connected with pre-magnetizing branch busbar, transformer in pre-magnetizing and the cable vault; Main busbar is housed in the bus-bar room; The pre-magnetizing controller is housed in the control room; The indoor vacuum circuit-breaker that is equipped with of handcart; Vacuum circuit-breaker one end connects main busbar; The other end connects power supply branch busbar by current transformer; Vacuum contactor one end connects main busbar; The other end connects pre-magnetizing branch busbar, and pre-magnetizing branch busbar connects the pre-magnetizing transformer, and the coil of vacuum contactor and vacuum circuit-breaker connects the pre-magnetizing controller.
Said vacuum contactor and vacuum circuit-breaker are in the same device.
Said vacuum contactor front end is joined high voltage fuse.
Said vacuum contactor and main busbar adopt the connected mode of cable or copper bar.
Beneficial effect of the present invention is: pre-magnetizing medium-voltage distribution device of the present invention, adopt the integrated design scheme, and realize that separately pre-magnetizing and high-power transformer are independently-powered; Reduce overall volume, reduce cost, and limited saving in space is come out to be used for to arrange other more visual plants; Control circuit is simple; Maintenance is convenient, reduces accident risk, improves reliability.
Description of drawings
Fig. 1 is a pre-magnetizing medium-voltage distribution apparatus structure sketch map of the present invention.
Embodiment
Pre-magnetizing medium-voltage distribution apparatus structure sketch map as shown in Figure 1; The integrated design of adopting; Comprise pre-magnetizing and cable vault 2, bus- bar room 3,5 four chambers in control room 4 and handcart chamber, these four indoor mainly is made up of pre-magnetizing controller 6, vacuum circuit-breaker 7, main busbar 8, vacuum contactor 9, current transformer 10, pre-magnetizing branch busbar 11, power supply branch busbar 12, earthed switch 13, voltage transformer 14.
Each chamber function of pre-magnetizing medium-voltage distribution device:
Pre-magnetizing controller 6 is installed in the control room 4, is mainly used in control pre-magnetizing and power switch breaking-closing operating;
Vacuum circuit-breaker 7 is installed in the handcart chamber 5, is mainly used in to high-power transformer and supplies power and reliable excision fault under the situation that transformer breaks down;
In pre-magnetizing and the cable vault 2 vacuum contactor 9 and earthed switch 13 are installed, are mainly used in pre-magnetizing branch busbar 11, the power supply branch busbar 12 of stube cable and current transformer 10, voltage transformer 14 are installed.
Each the indoor main components and parts effect of pre-magnetizing medium-voltage distribution device:
Vacuum circuit-breaker 7 one ends connect main busbar 8, and the other end connects power supply branch busbar 12 by current transformer 10, and power supply branch busbar 12 is used to connect high-power transformer, mainly supplies power to high-power transformer;
Ground connection when earthed switch 13 is mainly used in the maintenance of medium-voltage distribution device or high-power transformer, maintenance guarantees personal safety;
In addition, vacuum contactor 9 and the main busbar 8 main connected modes that adopt cable or copper bar.
Pre-magnetizing power distribution equipment power supply flow process:
At first, after pre-magnetizing controller 6 is received the order of closing a floodgate, send switching signal and give vacuum contactor 9; After vacuum contactor 9 closes a floodgate,, give the pre-magnetizing transformer-supplied through pre-magnetizing branch busbar 11; Carry out pre-magnetizing, and vacuum contactor 9 combined floodgates are fed back signal to pre-magnetizing controller 6;
Secondly, pre-magnetizing controller 6 is given 7 switching signals of vacuum circuit-breaker according to the combined floodgate feedback signal of vacuum contactor 9, after vacuum circuit-breaker 7 closes a floodgate, supplies power to high-power transformer through power supply branch busbar 12;
At last, pre-magnetizing controller 6 with vacuum contactor 9 separating brakes, stops pre-magnetizing according to time-delay.
This flow process has been accomplished the high-power transformer pre-magnetizing, the big magnetizing inrush current that has produced when having avoided the high-power transformer zero load directly to throw electrical network, thereby the continuity and the stability of assurance electric power system.
Claims (4)
1. pre-magnetizing medium-voltage distribution device; It is characterized in that; Device is divided into pre-magnetizing and cable vault, bus-bar room, control room and handcart chamber four chambers district, power supply branch busbar, detecting element current transformer and the voltage transformer, the earthed switch that have pre-magnetizing distribution executive item vacuum contactor to be connected with pre-magnetizing branch busbar, transformer in pre-magnetizing and the cable vault; Main busbar is housed in the bus-bar room; The pre-magnetizing controller is housed in the control room; The indoor vacuum circuit-breaker that is equipped with of handcart; Vacuum circuit-breaker one end connects main busbar; The other end connects power supply branch busbar by current transformer; Vacuum contactor one end connects main busbar; The other end connects pre-magnetizing branch busbar, and pre-magnetizing branch busbar connects the pre-magnetizing transformer, and the control coil of vacuum contactor and vacuum circuit-breaker connects the pre-magnetizing controller.
2. according to the said pre-magnetizing medium-voltage distribution of claim 1 device, it is characterized in that said vacuum contactor and vacuum circuit-breaker are in the same device.
3. according to the said pre-magnetizing medium-voltage distribution of claim 1 device, it is characterized in that said vacuum contactor front end is joined high voltage fuse.
4. according to the said pre-magnetizing medium-voltage distribution of claim 1 device, it is characterized in that said vacuum contactor and main busbar adopt the connected mode of cable or copper bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210192896.9A CN102684097B (en) | 2012-06-13 | 2012-06-13 | Pre-magnetizing medium-voltage power distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210192896.9A CN102684097B (en) | 2012-06-13 | 2012-06-13 | Pre-magnetizing medium-voltage power distribution device |
Publications (2)
| Publication Number | Publication Date |
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| CN102684097A true CN102684097A (en) | 2012-09-19 |
| CN102684097B CN102684097B (en) | 2015-06-10 |
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| CN201210192896.9A Active CN102684097B (en) | 2012-06-13 | 2012-06-13 | Pre-magnetizing medium-voltage power distribution device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5142110A (en) * | 1991-01-23 | 1992-08-25 | Kuehne Edward J | Modified magne-blast circuit breaker and method of modification |
| CN201174528Y (en) * | 2007-04-23 | 2008-12-31 | 上海华声电气研究所 | 3 interlayer combined high-voltage drawable switch cabinet |
| CN101702360A (en) * | 2009-11-10 | 2010-05-05 | 中国船舶重工集团公司第七一二研究所 | Pre-magnetizing device of power supply transformer and pre-magnetizing method thereof |
| CN102290720A (en) * | 2011-04-25 | 2011-12-21 | 吉林省金冠电气股份有限公司 | Metal armoring double-loop withdrawable high voltage vacuum contactor switch equipment |
| CN202633804U (en) * | 2012-06-13 | 2012-12-26 | 中国船舶重工集团公司第七0四研究所 | Pre-magnetizing medium-voltage power distribution unit |
-
2012
- 2012-06-13 CN CN201210192896.9A patent/CN102684097B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5142110A (en) * | 1991-01-23 | 1992-08-25 | Kuehne Edward J | Modified magne-blast circuit breaker and method of modification |
| CN201174528Y (en) * | 2007-04-23 | 2008-12-31 | 上海华声电气研究所 | 3 interlayer combined high-voltage drawable switch cabinet |
| CN101702360A (en) * | 2009-11-10 | 2010-05-05 | 中国船舶重工集团公司第七一二研究所 | Pre-magnetizing device of power supply transformer and pre-magnetizing method thereof |
| CN102290720A (en) * | 2011-04-25 | 2011-12-21 | 吉林省金冠电气股份有限公司 | Metal armoring double-loop withdrawable high voltage vacuum contactor switch equipment |
| CN202633804U (en) * | 2012-06-13 | 2012-12-26 | 中国船舶重工集团公司第七0四研究所 | Pre-magnetizing medium-voltage power distribution unit |
Non-Patent Citations (1)
| Title |
|---|
| 杨青: "船舶中压配电板的特点及发展趋势", 《船舶工程》, vol. 33, no. 6, 31 December 2011 (2011-12-31), pages 45 - 48 * |
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| CN102684097B (en) | 2015-06-10 |
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Effective date of registration: 20151215 Address after: 200031 Xuhui District, Hengshan Road, No. 10, Patentee after: SHANGHAI CSIC SHIP PROPULSION EQUIPMENT CO., LTD. Address before: 200031 Xuhui District, Hengshan Road, No. 10, Patentee before: No.704 Institute of China Shipbuilding Industry Corporation |