CN102684097B - Pre-magnetizing medium-voltage power distribution device - Google Patents
Pre-magnetizing medium-voltage power distribution device Download PDFInfo
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- CN102684097B CN102684097B CN201210192896.9A CN201210192896A CN102684097B CN 102684097 B CN102684097 B CN 102684097B CN 201210192896 A CN201210192896 A CN 201210192896A CN 102684097 B CN102684097 B CN 102684097B
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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 appts.
Background technology
Popularize with the continuous of all electric propulsion system ship along with the increase of ship electric power plant capacity, load equipment increase, traditional low-voltage power supply mode can not meet the demands, the employing of Medium voltage power supply system solves this demand, adapts to the boats and ships development trend requirements such as station capacity increase completely.Thereupon, medium-voltage distribution plate obtains general application.
In Medium voltage power supply system, along with the increase of load capacity, the use of high-power transformer is more and more general.High-power transformer can produce larger magnetizing inrush current when directly throwing electrical network, causes power network fluctuation, may cause switch mis-jumping lock, destroys the continuity of system power supply, brings the stability problem of system.For avoiding the appearance of this phenomenon, in medium-voltage distribution plate, have employed a kind of mode of transformer pre-magnetizing, to reduce transformer during no-load closing magnetizing inrush current and transient state time.
Existing medium-voltage distribution plate pre-magnetizing design mainly contains following characteristics:
(1). the general design adopting vacuum circuit breaker cabinet to add vacuum contactor cabinet, totally 2 screen compositions, complete the design of high-power transformer distribution;
(2). vacuum circuit breaker cabinet completes high-power transformer and powers.Vacuum contactor cabinet completes 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 large space, bring very large inconvenience to the integral layout of hull;
(2). two cabinets are independent, and cause pre-magnetizing control circuit separately, line design is complicated, give maintenance, safeguard and bring very big inconvenience.
Summary of the invention
The present invention be directed to present pre-magnetizing power distribution cabinet to take up room large problem, propose a kind of pre-magnetizing medium-voltage distribution appts, there is independently power supply capacity, can effective conserve space by this patent design, solve the problem of space layout.
Technical scheme of the present invention is: a kind of pre-magnetizing medium-voltage distribution appts, device is divided into pre-magnetizing and cable vault, bus-bar room, control room and handcart room four Ge Shi district, the power supply branch busbar having pre-magnetizing distribution executive item vacuum contactor to be connected with pre-magnetizing branch busbar, transformer in pre-magnetizing and cable vault, detecting element current transformer and voltage transformer, earthed switch; Bus-bar room is built with main busbar; Control room is built with pre-magnetizing controller; Handcart room is built with vacuum circuit-breaker; 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, pre-magnetizing branch busbar connects pre-magnetizing transformer, and the coil of vacuum contactor and vacuum circuit-breaker connects pre-magnetizing controller.
Described vacuum contactor and vacuum circuit-breaker are in same device.
High voltage fuse is joined in described vacuum contactor front end.
Described 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 appts of the present invention, adopt integrated design scheme, realize pre-magnetizing separately and high-power transformer is independently-powered, reduce overall volume, reduce costs, and limited space is saved out be used for arranging other more visual plants, control circuit is simple, maintenance is convenient, reduces accident risk, improves reliability.
Accompanying drawing explanation
Fig. 1 is pre-magnetizing medium-voltage distribution appts structural representation of the present invention.
Embodiment
Pre-magnetizing medium-voltage distribution appts structural representation as shown in Figure 1, the integrated design adopted, comprise pre-magnetizing and cable vault 2, bus-bar room 3, control room 4 and handcart room 5 four rooms, these four indoor form primarily 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.
Pre-magnetizing medium-voltage distribution appts each room function:
In control room 4, pre-magnetizing controller 6 is installed, is mainly used in controlling pre-magnetizing and power switch breaking-closing operating;
In handcart room 5, vacuum circuit-breaker 7 is installed, is mainly used in powering to high-power transformer and reliably excising fault when transformer breaks down;
In pre-magnetizing and cable vault 2, vacuum contactor 9 and earthed switch 13 are installed, are mainly used in the pre-magnetizing branch busbar 11 of stube cable, power supply branch busbar 12 and current transformer 10, voltage transformer 14 are installed.
The each indoor main components effect of pre-magnetizing medium-voltage distribution appts:
Vacuum circuit-breaker 7 one end connects main busbar 8, and the other end connects power supply branch busbar 12 by current transformer 10, and power supply branch busbar 12, for connecting high-power transformer, is mainly powered to high-power transformer;
Vacuum contactor 9 one end connects main busbar 8, and the other end connects pre-magnetizing branch busbar 11, and pre-magnetizing branch busbar 11, for connecting pre-magnetizing transformer, carries out pre-magnetizing, and vacuum contactor 9 also joins high voltage fuse protection;
Earthed switch 13 be mainly used in medium-voltage distribution appts or high-power transformer maintenance, maintenance time ground connection, ensure personal safety;
Current transformer 10, voltage transformer 14 are mainly used in carrying out measuring and protecting;
In addition, vacuum contactor 9 and main busbar 8 mainly adopt the connected mode of cable or copper bar.
Pre-magnetizing power distribution equipment is powered flow process:
First, pre-magnetizing controller 6 sends switching signal to vacuum contactor 9 after receiving order of closing a floodgate, after vacuum contactor 9 closes a floodgate, by pre-magnetizing branch busbar 11, to pre-magnetizing transformer-supplied, carry out pre-magnetizing, and vacuum contactor 9 combined floodgate is fed back signal to pre-magnetizing controller 6;
Secondly, pre-magnetizing controller 6, according to the combined floodgate feedback signal of vacuum contactor 9, to vacuum circuit-breaker 7 switching signals, after vacuum circuit-breaker 7 closes a floodgate, is powered to high-power transformer by power supply branch busbar 12;
Finally, pre-magnetizing controller 6 by vacuum contactor 9 separating brake, stops pre-magnetizing according to time delay.
This flow process completes high-power transformer pre-magnetizing, avoids the larger magnetizing inrush current produced when high-power transformer is unloaded directly throws electrical network, thus ensures the stability of electric power system.
Claims (1)
1. a pre-magnetizing medium-voltage distribution appts, it is characterized in that, device is divided into pre-magnetizing and cable vault, bus-bar room, control room and handcart room four Ge Shi district, and control room and handcart room are arranged up and down, bus-bar room is in rear end, control room, and pre-magnetizing and cable vault are positioned at bus-bar room and handcart room rear end; The power supply branch busbar having the vacuum contactor as pre-magnetizing distribution executive item to be connected with pre-magnetizing branch busbar, high-power transformer in pre-magnetizing and cable vault, detecting element current transformer and voltage transformer, earthed switch; Vacuum contactor wherein in pre-magnetizing and cable vault is positioned at bus-bar room rear end, pre-magnetizing branch busbar is positioned at below vacuum contactor, current transformer and power supply branch busbar are arranged above and below, and current transformer and power supply branch busbar are positioned at below bus-bar room and after handcart room; Bus-bar room is built with main busbar; Control room is built with pre-magnetizing controller; Handcart room is built with vacuum circuit-breaker; 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, pre-magnetizing branch busbar connects pre-magnetizing transformer, and the control coil of vacuum contactor and vacuum circuit-breaker connects pre-magnetizing controller.
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 |
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| Publication Number | Publication Date |
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| CN102684097A CN102684097A (en) | 2012-09-19 |
| CN102684097B true 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)
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| 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 |
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| 船舶中压配电板的特点及发展趋势;杨青;《船舶工程》;20111231;第33卷(第6期);第45-48页 * |
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| CN102684097A (en) | 2012-09-19 |
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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 |