CN105676048A - Transformer station switch cabinet switch secondary circuit detection device - Google Patents
Transformer station switch cabinet switch secondary circuit detection device Download PDFInfo
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- CN105676048A CN105676048A CN201610031767.XA CN201610031767A CN105676048A CN 105676048 A CN105676048 A CN 105676048A CN 201610031767 A CN201610031767 A CN 201610031767A CN 105676048 A CN105676048 A CN 105676048A
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- detecting unit
- switch
- jumping
- closing circuit
- spring energy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The invention relates to a transformer station switch cabinet switch secondary circuit detection device, including a first direct current power supply, a second direct current power supply, a tripping/closing circuit detection unit, a spring energy storage circuit detection circuit and an auxiliary contact detection unit. The tripping/closing circuit detection unit is connected with a tripping/closing circuit in a switch cabinet, the first direct current power supply is utilized to supply power to the tripping/closing circuit detection unit and the tripping/closing circuit which are connected, and the tripping/closing circuit detection unit controls and displays the on-off state of the tripping/closing circuit of a switch; the spring energy storage circuit detection unit is connected with a spring energy storage circuit in the switch cabinet, the first direct current power supply is utilized to supply power to the spring energy storage circuit detection unit and the spring energy storage circuit which are connected, and the spring energy storage circuit detection unit controls and displays the on-off state of an energy storage motor circuit; and the auxiliary contact detection unit is connected with an auxiliary contact inside the switch inside the switch cabinet, the second direct current power supply is used for supplying power to the auxiliary contact detection unit and the auxiliary contact which are connected, and the auxiliary contact detection unit displays the on-off state of the auxiliary contact.
Description
Technical field
The present invention relates to electric equipment detector, it is specifically related to a kind of handcart-type switch cabinet of converting station switch secondary circuit failure and searches device.
Background technology
Switching cabinet is a kind of power equipment, carries out generating electricity in power system, transmits electricity, in the process of distribution and electric energy conversion, plays the effect of control and protection electrical equipment. Auxiliary circuits in cabinet is the protection of switching cabinet and the wiring of measurement part; its effect the element in switching cabinet and current supply circuit is protected and measures; specifically comprise the connection circuit of metrical instrument, pilot lamp, press button and various relaying, it is seen that the normal operation of auxiliary circuits in cabinet is most important to switching cabinet.
The failure testing mode of existing auxiliary circuits in cabinet is utilize volt ohm-milliammeter to be measured in each loop after additional power source, it is pulled to test position by switching cabinet, secondary circuits is powered on, utilize volt ohm-milliammeter to measure the current potential of each circuit connection point one by one, thus judge whether secondary circuits exists fault; The failure testing of the inner secondary contact of switch then needs to utilize the break-make shelves of volt ohm-milliammeter to carry out break-make measurement. The detection mode that auxiliary circuits in cabinet is frequently powered on by this kind, secondary circuits in switching cabinet can be formed and impact, cause secondary loop short circuit, time serious, also can damage second set, and the whether correct disconnection or closed of the inner secondary contact of Switch main body can not be judged. It thus is seen that the mode efficiency manually utilizing volt ohm-milliammeter each loop in detector switch cabinet one by one is low and easy damage equipment.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome that auxiliary circuits in cabinet detection mode efficiency of the prior art is low and the defect of easy damage equipment.
In view of this, the present invention provides a kind of switch cabinet of converting station switch secondary circuits detection device, comprises the first direct supply, the 2nd direct supply, jumping/closing circuit detecting unit, spring energy-storage loop detecting unit, secondary contact detecting unit;
Described jumping/closing circuit detecting unit is connected with the jumping/closing circuit in switching cabinet, described first direct supply is used for powering for jumping/closing circuit detecting unit and the jumping/closing circuit being connected, and described jumping/closing circuit detecting unit is for controlling and shows the on off state of described switch jumping/closing circuit;
Described spring energy-storage loop detecting unit is connected with the spring energy-storage loop in switching cabinet, described first direct supply is used for as the spring energy-storage loop detecting unit that is connected and spring energy-storage loop power supply, and described spring energy-storage loop detecting unit is for controlling and shows the on off state in described energy storage motor loop;
Described switch secondary contact detecting unit secondary contact inner with the switch in switching cabinet are connected, described 2nd direct supply is used for powering for secondary contact detecting unit and the secondary contact being connected, and described secondary contact monitoring means shows the on off state of described secondary contact.
Further; described jumping/closing circuit detecting unit comprises: photodiode, partial pressure device, button and protection device; described first direct supply connects described jumping/closing circuit by described protection device; described button is for connecting described protection device; described first direct supply connects described jumping/closing circuit by described photodiode and the described partial pressure device mutually connected, by the on off state of jumping/closing circuit described in the state representation of described photodiode.
Further, described protection device is current relay.
Further, described spring energy-storage loop detecting unit comprises: photodiode, partial pressure device, energy storage switch, described first direct supply is by described energy storage switch linking springs energy storage loop, described first direct supply connects described spring energy-storage loop by described photodiode and the described partial pressure device mutually connected, by the working order in spring energy-storage loop described in the state representation of described photodiode.
Further, described partial pressure device is high resistance measurement or voltage relay.
Further, described secondary contact detecting unit comprises photodiode and resistance, and described 2nd direct supply is connected by the photodiode of series connection mutually and resistance secondary contact inner with the switch in switching cabinet.
Further, described prompting device is photodiode or combined aural and visual alarm.
Further, the coupling end of described first direct supply, the 2nd direct supply, jumping/closing circuit detecting unit, spring energy-storage loop detecting unit, secondary contact detecting unit and switching cabinet is integrated in aviation plug.
Thering is provided switch cabinet of converting station switch secondary circuits detection device according to the present invention, testing staff can utilize jumping/closing circuit detecting unit to control and show the on off state of switch jumping/closing circuit, thus whether detector switch jumping/closing circuit exists fault; Testing staff can utilize spring energy-storage loop detecting unit to control and show the on off state in energy storage motor loop simultaneously, thus detects whether energy storage motor loop exists fault; Testing staff can also judge the on off state of the inner each secondary contact of switch according to the display of switch inside secondary contact detecting unit, to detect whether each secondary contact exist fault. This device can overcome and utilizes volt ohm-milliammeter to measure the checking process caused problem loaded down with trivial details, that frequently power on and easily caused by secondary circuits and damage and can not accurately judge switch inner contact working order one by one, can effectively reduce troubleshooting and detection time, improve detection efficiency, and this device adopts separate two power supply, ensure that the inner heavy-current control part of switch and light current secondary contact realize electric isolution completely, stop because fault causes the generation of power supply series-parallel connection short circuit phenomenon.
Accompanying drawing explanation
In order to make the content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the switch cabinet of converting station switch secondary circuits detection device that the embodiment of the present invention provides;
Fig. 2 is the structural representation of the jumping/closing circuit detecting unit in the detection device of embodiment of the present invention offer;
Fig. 3 is the structural representation of the spring energy-storage loop detecting unit in the detection device of embodiment of the present invention offer;
Fig. 4 is the structural representation of the inner secondary contact detecting unit of the switch in the detection device of embodiment of the present invention offer.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of switch cabinet of converting station switch secondary circuits detection device, comprises the first direct supply 11, the 2nd direct supply 21, jumping/closing circuit monitoring means 12, spring energy-storage loop monitoring means 14, secondary contact monitoring means 22.
Wherein, jumping/closing circuit detecting unit 12 is connected with the jumping/closing circuit 13 in switching cabinet, first direct supply 11 is powered for jumping/closing circuit detecting unit 12 and the jumping/closing circuit 13 being connected, first direct supply 11 can utilize external ac power source to obtain electric energy, and by conversion circuit, alternating-current is converted to the direct current of predetermined voltage, the magnitude of voltage of usual first direct supply 11 is 220V. Such as the first direct supply 11, jumping/closing circuit detecting unit 12 and jumping/closing circuit 13 can be series relationship, jumping/closing circuit detecting unit 12 can change the tripping operation coil in jumpings/closing circuit 13 or the connection state of combined floodgate coil and the first direct supply 11 by manual control, and then realization controls and shows the on off state of switch jumping/closing circuit 13.
Spring energy-storage loop detecting unit 14 is connected with the spring energy-storage loop 15 in switching cabinet, first direct supply 11 is powered for spring energy-storage loop detecting unit 14 and the spring energy-storage loop 15 being connected, first direct supply 11 can utilize the AC power in switching cabinet to obtain electric energy, and by conversion circuit, alternating-current is converted to the direct current of predetermined voltage, the magnitude of voltage of usual first direct supply 11 is 220V. Such as the first direct supply 11, spring energy-storage loop detecting unit 14 and spring energy-storage loop 15 can be series relationship, spring energy-storage loop detecting unit 14 can change the connection state of spring energy-storage loop 15 and the first direct supply 11 by manual control, and then realization controls and shows the on off state in spring energy-storage loop 15.
Switch secondary contact detecting unit 22 secondary contact 23 inner with the switch in switching cabinet are connected, 2nd direct supply 21 is powered for the inner secondary contact 23 of the switch secondary contact detecting unit 22 for being connected and switch, 2nd direct current component 21 can utilize the AC power in switching cabinet to obtain electric energy equally, and by conversion circuit, alternating-current is converted to the direct current of predetermined voltage, performance characteristics setting voltage of supply according to switch inside secondary contact 23, the magnitude of voltage of usual 2nd direct current component 21 is 24V, such as the 2nd direct current component 21, switch secondary contact detecting unit 22 and the inner secondary contact 23 of switch can be series relationship, the on off state of the inner secondary contact 23 of switch can affect the connection state of switch secondary contact detecting unit 22 and the 2nd direct current component 21, thus the state making switch secondary contact detecting unit 22 can reflect the on off state of the inner secondary contact 23 of switch. the inner secondary contact 23 of switch comprise switch trip position secondary contact, closing position secondary contact, spring unstored energy secondary contact, switch cart location aided rebroadcast contact etc., multiple wiring end specifically can be set, it is connected with each secondary contact respectively, to show the on off state of each contact respectively.
Thering is provided switch cabinet of converting station switch secondary circuits detection device according to the present invention, testing staff can utilize jumping/closing circuit detecting unit to control and show the on off state of switch jumping/closing circuit, thus whether detector switch jumping/closing circuit exists fault;Testing staff can utilize spring energy-storage loop detecting unit to control and show the on off state in energy storage motor loop simultaneously, thus detects whether energy storage motor loop exists fault; Testing staff can also judge the on off state of the inner each secondary contact of switch according to the display of switch inside secondary contact detecting unit, to detect whether each secondary contact exist fault. This device can overcome and utilizes volt ohm-milliammeter to measure the checking process caused problem loaded down with trivial details, that frequently power on and easily caused by secondary circuits and damage and can not accurately judge switch inner contact working order one by one, can effectively reduce troubleshooting and detection time, improve detection efficiency, and this device adopts separate two power supply, ensure that the inner heavy-current control part of switch and light current secondary contact realize electric isolution completely, stop because fault causes the generation of power supply series-parallel connection short circuit phenomenon.
Preferably implementing mode as one, as shown in Figure 2, above-mentioned jumping/closing circuit detecting unit 12, specifically can comprise prompting device L1, partial pressure device A, button SA, protection device B. Prompting device L1 connects with partial pressure device A, is connected in jumping/closing circuit 1, relates generally to switching cabinet and jump/combined floodgate coil C and jumping/closing switch in jumping/closing circuit 1. By pointing out the on off state in the state representation loop 1 to be detected of device L1, button SA and protection device B is connected in jumping/closing circuit 1. Wherein, prompting device L1 can be photodiode or combined aural and visual alarm, the preferred photodiode of the present embodiment, photodiode bright/go out show jumpings/closing circuit 1 normally/fault. Partial pressure device A can be high resistance measurement or voltage relay, and the present embodiment preferentially selects voltage relay to carry out dividing potential drop, utilizes voltage relay to carry out dividing potential drop and is beneficial to the function expansion that switch cabinet of converting station switch secondary circuits from now on detects device. Button SA is hand push button, and when button SA closes, prompting device L1 and partial pressure device A is shorted, and protection device B and jumping/closing circuit 1 are connected, and jumping/closing circuit 1 voltage increases and produces action. Protection device B comprises rly. and the contact thereof of series connection, it is possible to be current relay, for the protection of jumping/closing circuit 1.
Specifically, when jumping/closing circuit breaker in middle is in trip position, after switch trips, normally closed (normally closed i.e. switch disconnects after the closing) secondary contact of routing switch Inner link of tripping back make it to disconnect, closing circuit is made it to connect by (often open after i.e. switch closes and connect) secondary contact of often opening of switch Inner link, monitored by photodiode and voltage relay dividing potential drop, when switching cabinet jumping/closing circuit trouble free, after pressing switch combined floodgate button SA, by photodiode and voltage relay short circuit, the voltage of combined floodgate coil increases, meanwhile, in connection button SA moment, current relay is energized, its contact closes, self-sustaining loop is formed with closing circuit, make the voltage of combined floodgate coil by the enough time, by combined floodgate coil, switch is switched to closing position from trip position. with reason, after switch closes a floodgate, by the secondary contact of switch inside, closing circuit being disconnected, tripping operation loop is connected, and then starts the monitoring to tripping operation loop, to the mode of tripping operation loop monitoring, with above-mentioned closing circuit. when photodiode does not work, show that loop exists fault, then carry out malfunction elimination.
Preferably implementing mode as one, as shown in Figure 3, spring energy-storage loop detecting unit 14 comprises prompting device L2, partial pressure device D, manual switch CK.Original state, manual switch CK disconnects, and prompting device L2 is connected in spring energy-storage loop 2 after connecting with partial pressure device D, and spring energy-storage loop 2 mainly comprises energy storage motor loop M and switch. The on off state in the state representation spring energy-storage loop 2 of prompting device L2, manual switch CK connects with spring energy-storage loop 2. Prompting device L2 can be photodiode or combined aural and visual alarm, the preferred photodiode of the present embodiment, photodiode bright/go out represent spring energy-storage loop 2 normal/fault. Partial pressure device D can be high resistance measurement or voltage relay, and the present embodiment preferentially selects high resistance measurement dividing potential drop.
Specifically, time initial, energy storage switch CK is in disconnection state, photodiode connect with high resistance measurement after linking springs energy storage loop, play monitor spring energy-storage loop effect. When photodiode is bright, showing energy storage motor loop trouble free, when, after closed energy storage switch CK, now photodiode and high resistance measurement are shorted, motor energy storage loop is connected then, drives stored energy mechanism to start working by energy storage motor; When photodiode does not work, show that energy storage motor loop exists fault, then carry out malfunction elimination.
Preferably implementing mode as one, as shown in Figure 4, the inner secondary contact detecting unit 22 of above-mentioned switch comprises prompting device L3, protection device E. Prompting device L3 is connected in the inner secondary contact 3 of switch after connecting with protection device E, the on off state of the inner secondary contact 3 of the state representation switch of prompting device L3, protection device E plays the effect of protection circuit. Prompting device L3 can be photodiode or combined aural and visual alarm, and the present embodiment preferably adopts photodiode, photodiode bright/go out show loop 3 to be detected normal/fault, protection device E adopts resistance.
Specifically, switch inside all kinds of can often leave by the form utilizing photodiode in series with a resistor/and normally closed auxiliary contact, energy storing of switch contact, contact, little truck position and spare contact carry out malfunction monitoring. By photodiode bright/go out, judge the working order of secondary contact. For switch normally closed contact, photodiode bright expression switch normally closed contact working order is normal, otherwise, for switch normally opened contact, photodiode goes out and represents that switch contact is in normal operation state, with reason, the condition monitoring of other contacts passes through photodiode condition adjudgement according to actual working state. Above-mentioned preferred version structure is simple, and hardware cost is low and reliability is stronger.
In addition, the coupling end of above-mentioned first direct supply, the 2nd direct supply, jumping/closing circuit detecting unit, spring energy-storage loop detecting unit, secondary contact detecting unit and switching cabinet can be integrated in an aviation plug, and the tie point that correspondingly each on switching cabinet is connected with detection device can be integrated in an aviation socket. During actual use, only aviation plug and Switch main body aviation plug fastening card need to being buckled and just can carry out detection operation, above-mentioned preferred version has feature easy for installation, simple to operate.
Obviously, above-described embodiment is only used to clearly illustrate example, and not to the restriction of the mode of enforcement. For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description. Here without the need to also cannot all enforcement modes be given exhaustive. And the apparent change thus extended out or variation are still among the protection domain of the invention.
Claims (8)
1. a switch cabinet of converting station switch secondary circuits detection device, it is characterised in that, comprise the first direct supply, the 2nd direct supply, jumping/closing circuit detecting unit, spring energy-storage loop detecting unit, secondary contact detecting unit;
Described jumping/closing circuit detecting unit is connected with the jumping/closing circuit in switching cabinet, described first direct supply is used for powering for jumping/closing circuit detecting unit and the jumping/closing circuit being connected, and described jumping/closing circuit detecting unit is for controlling and shows the on off state of described switch jumping/closing circuit;
Described spring energy-storage loop detecting unit is connected with the spring energy-storage loop in switching cabinet, described first direct supply is used for as the spring energy-storage loop detecting unit that is connected and spring energy-storage loop power supply, and described spring energy-storage loop detecting unit is for controlling and shows the on off state in described energy storage motor loop;
Described switch secondary contact detecting unit secondary contact inner with the switch in switching cabinet are connected, described 2nd direct supply is used for powering for secondary contact detecting unit and the secondary contact being connected, and described secondary contact detecting unit is for showing the on off state of described secondary contact.
2. device according to claim 1; it is characterized in that; described jumping/closing circuit detecting unit comprises: prompting device, partial pressure device, button and protection device; described first direct supply connects described jumping/closing circuit by described protection device; described button is for connecting described protection device; described first direct supply connects described jumping/closing circuit by described prompting device and the described partial pressure device mutually connected, by the on off state of jumping/closing circuit described in the state representation of described prompting device.
3. device according to claim 2, it is characterised in that, described protection device is current relay.
4. device according to claim 1, it is characterized in that, described spring energy-storage loop detecting unit comprises: prompting device, partial pressure device, energy storage switch, described first direct supply is by described energy storage switch linking springs energy storage loop, described first direct supply connects described spring energy-storage loop by described prompting device and the described partial pressure device mutually connected, by the working order in spring energy-storage loop described in the state representation of described prompting device.
5. device according to any one of claim 2-4, it is characterised in that, described partial pressure device is high resistance measurement or voltage relay.
6. device according to claim 1, it is characterised in that, described secondary contact detecting unit comprises prompting device and resistance, and described 2nd direct supply is connected by the prompting device of series connection mutually and resistance secondary contact inner with the switch in switching cabinet.
7. device according to claim 2-6, it is characterised in that, described prompting device is photodiode or combined aural and visual alarm.
8. device according to claim 1, it is characterized in that, the coupling end of described first direct supply, the 2nd direct supply, jumping/closing circuit detecting unit, spring energy-storage loop detecting unit, secondary contact detecting unit and switching cabinet is integrated in aviation plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610031767.XA CN105676048B (en) | 2016-01-18 | 2016-01-18 | A kind of switch cabinet of converting station switch secondary circuit detection device |
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| CN201610031767.XA CN105676048B (en) | 2016-01-18 | 2016-01-18 | A kind of switch cabinet of converting station switch secondary circuit detection device |
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| CN105676048A true CN105676048A (en) | 2016-06-15 |
| CN105676048B CN105676048B (en) | 2018-11-02 |
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| CN201610031767.XA Active CN105676048B (en) | 2016-01-18 | 2016-01-18 | A kind of switch cabinet of converting station switch secondary circuit detection device |
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| CN109633304A (en) * | 2018-12-07 | 2019-04-16 | 国网浙江义乌市供电有限公司 | A kind of high-voltage switch cubicle handcart experimental rig |
| CN109946556A (en) * | 2018-12-25 | 2019-06-28 | 江苏核电有限公司 | A kind of nuclear power station switchgear public alarm fast-positioning device and its localization method |
| CN111044892A (en) * | 2019-12-11 | 2020-04-21 | 嘉兴恒创电力集团有限公司博创物资分公司 | High-voltage circuit breaker secondary circuit detection device and method based on ubiquitous power Internet of things |
| CN111103536A (en) * | 2019-12-31 | 2020-05-05 | 宁波职业技术学院 | Low-voltage drawer cabinet testing device |
| CN111323664A (en) * | 2020-03-18 | 2020-06-23 | 宁波职业技术学院 | High tension switchgear test module |
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| CN111044892A (en) * | 2019-12-11 | 2020-04-21 | 嘉兴恒创电力集团有限公司博创物资分公司 | High-voltage circuit breaker secondary circuit detection device and method based on ubiquitous power Internet of things |
| CN111103536A (en) * | 2019-12-31 | 2020-05-05 | 宁波职业技术学院 | Low-voltage drawer cabinet testing device |
| CN111323664A (en) * | 2020-03-18 | 2020-06-23 | 宁波职业技术学院 | High tension switchgear test module |
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