CN203596506U - High voltage frequency conversion bypass cabinet - Google Patents
High voltage frequency conversion bypass cabinet Download PDFInfo
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- CN203596506U CN203596506U CN201320675105.8U CN201320675105U CN203596506U CN 203596506 U CN203596506 U CN 203596506U CN 201320675105 U CN201320675105 U CN 201320675105U CN 203596506 U CN203596506 U CN 203596506U
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Abstract
The utility model relates to a high voltage frequency conversion bypass device; a high voltage frequency conversion bypass cabinet comprises a cabinet body, a cabinet door, a control switch and three control system sets; the cabinet door is arranged on the cabinet body; the control switch controlling open/close of the three control system sets is arranged on an outer side wall of the cabinet body; the three control system sets connected with the control switch are arranged in the cabinet body; the three control system sets respectively refer to a frequency conversion front end control system, a frequency conversion rear end control system, and a direct connection control system; a rotary knife switch plate connected with a frequency conversion front end and direct connection selecting switch is arranged in the cabinet body, inner ends of a frequency conversion front end knife switch and a direct connection knife switch are fixed on the rotary knife switch plate, and the frequency conversion front end and direct connection selecting switch controls the rotary knife switch plate to rotate; the high voltage frequency conversion bypass cabinet is novel in structure, high in safety, and has machinery interlock function.
Description
Technical field
The utility model relates to a kind of high-voltage frequency conversion bypass device.
Background technology
Along with further developing of variable frequency control theory and manufacturing process, the producer of frequency conversion has both at home and abroad carried out a large amount of technological improvement and perfect to its frequency converter product, and the operational reliability of frequency converter is more greatly improved.But undeniable, frequency converter is as a complicated high power electronic equipment, its operation steady in a long-term is still subject to the impact of certain factor, as electromagnetic interference, component quality, ambient temperature, air purity, personnel's maintenance levels etc., because of the existence of above-mentioned factor, doubt is entertained in power plant on station-service high-voltage motor Frequency Conversion Modification, once the tripping operation of power plant Important Auxiliary equipment, by fluctuation, the interruption of the production process that directly causes generating electricity, impact to power plant safety stable operation.In Frequency Conversion Modification, how to avoid the accident that causes due to frequency converter failure, improve the operational reliability of set auxiliary machinery, become the most important consideration of power plant.For this reason, except the high frequency converter product of selection reliability, also can require to configure bypass cabinet, the effect of bypass cabinet is frequency converter failure, when maintenance, also can realize motor power frequency bypass operation, do not affect the normal operation of generating set to guarantee subsidiary engine power frequency to drag, improve set auxiliary machinery operational reliability and system availability, concrete is exactly in the time that a frequency converter part breaks down, system is detecting the switching of carrying out operational mode after this partial fault, carry out continuously the function of derate or the work of non-derate with assurance system, can improve widely its operational reliability, meet high reliability user's requirement, so that this class user's system equipment or technique can not be affected because of frequency converter operation troubles, can carry out breakdown maintenance to frequency conversion equipment in the suitable time.The principle of high-voltage frequency-conversion by-pass cabinet adopts frequency conversion branch road and power frequency branch circuit parallel connection exactly, disconnects frequency conversion branch road in the time that frequency converter damages, and connects power frequency branch road.The deficiency that existing high-voltage frequency-conversion by-pass cabinet exists is poor stability, can be because fault or misoperation cause the damage of frequency converter.
Summary of the invention
Goal of the invention of the present utility model is to overcome above-mentioned technological deficiency, and a kind of novel structure is provided, with mechanical interlocked function, and safe high-voltage frequency-conversion by-pass cabinet.
To achieve the above object, the utility model has adopted following technical scheme:
High-voltage frequency-conversion by-pass cabinet, comprise cabinet, cabinet door, control switch and three set control systems, cabinet door is arranged on cabinet, and the control switch of controlling three set control system foldings is arranged on the lateral wall of cabinet, and three set control systems that are connected with control switch are installed in cabinet; Three set control systems are respectively end control system and direct wire control systems after frequency conversion front-end control system, frequency conversion, end control system frequency conversion branch road in series after frequency conversion front-end control system and frequency conversion, direct wire control system and frequency conversion branch circuit parallel connection arrange, and direct wire control system is power frequency branch road; Control switch is divided into frequency conversion rear end control switch and frequency conversion front end and direct-connected selector switch, end control system after frequency conversion rear end control switch connection frequency conversion, and frequency conversion front end and direct-connected selector switch connect frequency conversion front-end control system and direct wire control system; The frequency conversion front end plug-in strip that frequency conversion front-end control system comprises frequency conversion front-end control circuit and mates with it, the frequency conversion rear end plug-in strip that after frequency conversion, end control system comprises frequency conversion rear end control circuit and mates with it, the direct-connected plug-in strip that direct wire control system comprises direct-connected control circuit and mates with it; In cabinet, be provided with the rotation plug-in strip plate being connected with frequency conversion front end and direct-connected selector switch, the inner of frequency conversion front end plug-in strip and direct-connected plug-in strip is all fixed on rotates on plug-in strip plate, frequency conversion front end and direct-connected selector switch control are rotated plug-in strip plate and are rotated, and frequency conversion front end and direct-connected selector switch drive the outer end of frequency conversion front end plug-in strip be connected with frequency conversion front-end control circuit or drive the outer end of direct-connected plug-in strip to be connected with direct-connected control circuit.
As preferably, described rated voltage is between 5-10KV.
Adopt the high-voltage frequency-conversion by-pass cabinet of technique scheme, the control switch of controlling three set control system foldings is arranged on the lateral wall of cabinet, three set control systems that are connected with control switch are installed in cabinet, do not need the disconnecting link in manual operation cabinet, only need to operate the control switch on cabinet lateral wall, safe.Frequency conversion front end and direct-connected selector switch control are rotated plug-in strip plate and are rotated, frequency conversion front end and direct-connected selector switch drive the outer end of frequency conversion front end plug-in strip be connected with frequency conversion front-end control circuit or drive the outer end of direct-connected plug-in strip to be connected with direct-connected control circuit, rotate plug-in strip plate and on frequency conversion front end plug-in strip and direct-connected plug-in strip be the double-throw disconnecting switch with mechanical interlocked function, can only be communicated with a road, can not be by all closed to frequency conversion front end plug-in strip and direct-connected plug-in strip, therefore can not cause because of fault or misoperation the damage of frequency converter, safe.In sum, the advantage of this high-voltage frequency-conversion by-pass cabinet is novel structure, with mechanical interlocked function, safe.
Accompanying drawing explanation
Fig. 1: the high-voltage frequency-conversion by-pass cabinet Facad structure schematic diagram of the utility model embodiment.
Fig. 2: the high-voltage frequency-conversion by-pass cabinet cross-sectional view of the utility model embodiment.
Embodiment
Below in conjunction with Fig. 1 and Fig. 2, embodiment of the present utility model is made a detailed explanation.
High-voltage frequency-conversion by-pass cabinet as depicted in figs. 1 and 2, comprises cabinet 1, cabinet door 2, control switch and three set control systems.Cabinet door 2 is arranged on cabinet 1, and the control switch of controlling three set control system foldings is arranged on the lateral wall of cabinet 1, and three set control systems that are connected with control switch are installed in cabinet 1.
Three set control systems are respectively end control system 5 and direct wire control systems 6 after frequency conversion front-end control system 7, frequency conversion, end control system 5 frequency conversion branch road in series after frequency conversion front-end control system 7 and frequency conversion, direct wire control system 6 arranges with frequency conversion branch circuit parallel connection, and direct wire control system 6 is power frequency branch road.
Control switch is divided into frequency conversion rear end control switch 4 and frequency conversion front end and direct-connected selector switch 3, and frequency conversion rear end control switch 4 connects end control system 5 after frequency conversion, and frequency conversion front end and direct-connected selector switch 3 connect frequency conversion front-end control system 7 and direct wire control system 6.The frequency conversion front end plug-in strip 71 that frequency conversion front-end control system 7 comprises frequency conversion front-end control circuit and mates with it, the frequency conversion rear end plug-in strip 51 that after frequency conversion, end control system 5 comprises frequency conversion rear end control circuit and mates with it, the direct-connected plug-in strip 61 that direct wire control system 6 comprises direct-connected control circuit and mates with it.In cabinet 1, be provided with the rotation plug-in strip plate 8 being connected with frequency conversion front end and direct-connected selector switch 3, the inner of frequency conversion front end plug-in strip 71 and direct-connected plug-in strip 61 is all fixed on rotates on plug-in strip plate 8, frequency conversion front end and direct-connected selector switch 3 are controlled rotation plug-in strip plate 8 and are rotated, and frequency conversion front end and direct-connected selector switch 3 drive the outer end of frequency conversion front end plug-in strip 71 be connected with frequency conversion front-end control circuit or drive the outer end of direct-connected plug-in strip 61 to be connected with direct-connected control circuit.
The most frequently used rated voltage of said structure high-voltage frequency-conversion by-pass cabinet is 7.2KV, and rated power is 5000KW, rated current 630A, rated frequency 50Hz.
When normal use, frequency conversion front end and direct-connected selector switch 3 are upwards closed, controlling rotation plug-in strip plate 8 rotates, frequency conversion front end and direct-connected selector switch 3 drive the outer end of frequency conversion front end plug-in strip 71 to be connected with frequency conversion front-end control circuit by rotating plug-in strip plate 8, frequency conversion rear end control switch 4 is upwards closed, frequency conversion rear end control switch 4 is controlled frequency conversion rear end plug-in strip 51 and is connected with frequency conversion rear end control circuit, after frequency conversion front-end control system 7 and frequency conversion, end control system 5 frequency conversion branch road in series is normally worked, and now direct-connected plug-in strip 61 disconnects with direct-connected control circuit.In the time that damaging or need to overhaul, frequency converter disconnects frequency conversion branch road, connect power frequency branch road, specifically frequency conversion front end and direct-connected selector switch 3 are closed downwards, control rotation plug-in strip plate 8 and rotate upwards rotation, frequency conversion front end and direct-connected selector switch 3 drive the outer end of direct-connected plug-in strip 61 to be connected with direct-connected control circuit by rotating plug-in strip plate 8, and frequency conversion rear end control switch 4 is controlled frequency conversion rear end plug-in strip 51 and disconnected with frequency conversion rear end control circuit.
Claims (1)
1. high-voltage frequency-conversion by-pass cabinet, it is characterized in that comprising cabinet, cabinet door, control switch and three set control systems, cabinet door is arranged on cabinet, and the control switch of controlling three set control system foldings is arranged on the lateral wall of cabinet, and three set control systems that are connected with control switch are installed in cabinet; Three set control systems are respectively end control system and direct wire control systems after frequency conversion front-end control system, frequency conversion, end control system frequency conversion branch road in series after frequency conversion front-end control system and frequency conversion, direct wire control system and frequency conversion branch circuit parallel connection arrange, and direct wire control system is power frequency branch road; Control switch is divided into frequency conversion rear end control switch and frequency conversion front end and direct-connected selector switch, end control system after frequency conversion rear end control switch connection frequency conversion, and frequency conversion front end and direct-connected selector switch connect frequency conversion front-end control system and direct wire control system; The frequency conversion front end plug-in strip that frequency conversion front-end control system comprises frequency conversion front-end control circuit and mates with it, the frequency conversion rear end plug-in strip that after frequency conversion, end control system comprises frequency conversion rear end control circuit and mates with it, the direct-connected plug-in strip that direct wire control system comprises direct-connected control circuit and mates with it; In cabinet, be provided with the rotation plug-in strip plate being connected with frequency conversion front end and direct-connected selector switch, the inner of frequency conversion front end plug-in strip and direct-connected plug-in strip is all fixed on rotates on plug-in strip plate, frequency conversion front end and direct-connected selector switch control are rotated plug-in strip plate and are rotated, and frequency conversion front end and direct-connected selector switch drive the outer end of frequency conversion front end plug-in strip be connected with frequency conversion front-end control circuit or drive the outer end of direct-connected plug-in strip to be connected with direct-connected control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675105.8U CN203596506U (en) | 2013-10-29 | 2013-10-29 | High voltage frequency conversion bypass cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675105.8U CN203596506U (en) | 2013-10-29 | 2013-10-29 | High voltage frequency conversion bypass cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596506U true CN203596506U (en) | 2014-05-14 |
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ID=50677365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320675105.8U Expired - Fee Related CN203596506U (en) | 2013-10-29 | 2013-10-29 | High voltage frequency conversion bypass cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596506U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490171A (en) * | 2015-11-30 | 2016-04-13 | 株洲南车机电科技有限公司 | High-voltage frequency-conversion one-for-one manual bypass cabinet |
| CN112038961A (en) * | 2020-08-25 | 2020-12-04 | 安徽得润电气技术有限公司 | Manual bypass cabinet of many isolator high pressure |
-
2013
- 2013-10-29 CN CN201320675105.8U patent/CN203596506U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490171A (en) * | 2015-11-30 | 2016-04-13 | 株洲南车机电科技有限公司 | High-voltage frequency-conversion one-for-one manual bypass cabinet |
| CN112038961A (en) * | 2020-08-25 | 2020-12-04 | 安徽得润电气技术有限公司 | Manual bypass cabinet of many isolator high pressure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20161029 |