CN205959867U - Outdoor high pressure spring operation vacuum circuit breaker's control circuit - Google Patents

Abstract

The utility model discloses an outdoor high pressure spring operation vacuum circuit breaker's control circuit, include control bus and combined floodgate generating line, concatenate auxiliary switch's normal open auxiliary contact among the tripping circuit, concatenate auxiliary switch's normally closed auxiliary contact in the combined floodgate return circuit, shortened tripping and closing coil power -on time, the relay is prevented jumping in the setting, realizes preventing jumping the function, manual tripping and closing has adopted combined floodgate contact and tripping operation contact, automatic tripping and closing has adopted protection export and automatics export respectively, fuse, tripping operation position relay and green light and combined floodgate position relay and red light have been installed, concatenate spring supplementary normally closed contact of closed operating mechanism when taut in the motor starts the return circuit, realized the automatic energy storage of combined floodgate spring, introduce the closing spring take -up supplementary normally open contact of closed operating mechanism that puts in place at the ciose -switching circuit, guarantee that the closing spring is taut not close a floodgate when not in place.

Description

A kind of outdoor high-voltage spring operates the control circuit of vacuum circuit breaker

Technical field

The utility model be related to outdoor electricity distribution apparatus field and in particular to a kind of for cut-offfing, closing in power system The outdoor high-voltage spring of load current, overload current and short circuit current operates the control circuit of vacuum circuit breaker.

Background technology

Continuous expansion with China's urban construction scale and economic developing rapidly, what power distribution network was powered is safe and reliable Property proposes higher requirement, and constantly expands with electrical network, and equipment increases year by year, and the performance of switching devices, quality carry again Go out higher requirement.Power department is in order to improve reliability and the power supply quality of power supply, highly reliable to electric product, exempt to tie up Shield, intelligentized requirement are more and more urgent.The quality of the breaker of one of the core component as switchgear and performance are always Paid close attention to by using department and manufacturing enterprise.Produce highly reliable, non-maintaining, the intelligent open circuit meeting power department requirement Device has become the target that manufacturing enterprise is constantly pursued.

The quality of vacuum circuit breaker be after all be embodied in vacuum extinction interior contact point, in conjunction action, and divide, close Action is realized by operating mechanism again, the therefore service behaviour of operating mechanism and the quality of the quality work to breaker Performance And Reliability plays particularly important effect.For current spring operating mechanism, there is following requirement：1st, breaker tripping and closing line Circle conduction time is as far as possible short；2nd, there is " anti-jump " device；3rd, manual, kick down lock can conveniently be realized；4th, there is protection and return The supervision measure of road integrity；5th, the energy storage of switching-in spring can be automatically performed；6th, switching-in spring tension does not allow to close when not in place Lock, and send signal.But, there is presently no the product meeting above-mentioned requirements.

Utility model content

In view of the demand, a kind of control circuit of the utility model offer outdoor high-voltage spring operation vacuum circuit breaker.

For reaching above-mentioned purpose, embodiment of the present utility model adopts the following technical scheme that：

A kind of outdoor high-voltage spring operates the control circuit of vacuum circuit breaker, including control bus and closing bus bar, first Fuse, second fuse are connected with the positive pole of described control bus, negative pole respectively, and the 3rd fuse, the 4th fuse are respectively It is connected with the positive pole of described closing bus bar, negative pole；Automatic closing relay contact, anti-trip relay second contact, anti-jump relay Two ends after the series connection of device second coil connect positive pole and the negative pole of control bus respectively；The 2-4 contact of controlling switch, anti-jump relay Device first contact, auxiliary normally opened contact, the first auxiliary switch, closing coil series connection after two ends just connecting control bus respectively Pole and negative pole；The 2-4 contact of controlling switch is connected automatic closing relay contact with the common port of anti-trip relay first contact Common port with anti-trip relay second contact；Two ends after green light and first resistor series connection are just connecting control bus respectively Pole, anti-trip relay first contact and the common port assisting normally opened contact；The 1-3 contact of controlling switch, anti-trip relay first Coil, the second auxiliary switch, the two ends after switching winding series connection connect positive pole and the negative pole of control bus respectively；Red light and second 1-3 contact shunt with controlling switch after resistant series；Open with control behind anti-trip relay the 3rd contact and 3rd resistor series connection The 1-3 contact shunt closing；Protection exit relay contact and the 1-3 contact shunt of controlling switch；First auxiliary normally-closed contact, storage Two ends after energy motor, the second auxiliary normally-closed contact series connection connect positive pole and the negative pole of closing bus bar respectively.

The advantage that the utility model is implemented：

1st, the utility model concatenates the normally opened auxiliary contact of auxiliary switch in trip(ping) circuit, goes here and there in closing circuit simultaneously Connect the normally closed auxiliary contact of auxiliary switch, shorten tripping coil conduction time；2nd, the utility model adopts anti-trip relay Realize anti-bouncing function；3rd, the manual breaker tripping and closing of the utility model employ combined floodgate contact and tripping operation contact；Kick down lock is adopted respectively With protection exit and automatics outlet；Manual, kick down lock can be conveniently realized；4th, the utility model has been installed and has been melted Disconnected device, tripping position relay and green light and closing operation position relay and red light；5th, the utility model returns in motor starting Operating mechanism auxiliary normally-closed contact that in road, concatenation spring closes when not straining is it is achieved that the automatic energy storage of switching-in spring；6th, originally Utility model introduces switching-in spring in closing circuit and strains the operating mechanism auxiliary normally opened contact of the closure that puts in place it is ensured that closing a floodgate Not close a floodgate when spring straining is not in place.

Brief description

In order to be illustrated more clearly that the technical scheme in the utility model embodiment, will make to required in embodiment below Accompanying drawing be briefly described it should be apparent that, drawings in the following description be only some embodiments of the present utility model, For those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings Other accompanying drawings.

Fig. 1 is circuit theory diagrams of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of the utility model rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of the utility model protection.

Refer to Fig. 1, control circuit of the present utility model includes control bus+WC ,-WC and closing bus bar+WOM ,-WOM. Fuse 1FU, 2FU are connected with the positive pole+WC of control bus, negative pole-WC respectively.Fuse 3FU, fuse 4FU respectively with conjunction Positive pole+the WOM of lock bus, negative pole-WOM connect.Controlling switch SA adopts LW2 type controlling switch.Automatic closing relay contact Two ends after KM, anti-trip relay contact KCF2, anti-trip relay coil KCFu series connection connect the positive pole+WC of control bus respectively With negative pole-WC.The 2-4 contact of controlling switch SA, anti-trip relay contact KCF1, auxiliary normally opened contact Q1, auxiliary switch QF1, Two ends after closing coil YC series connection connect the positive pole+WC and negative pole-WC of control bus respectively.The 2-4 contact of controlling switch SA It is connected the public affairs of automatic closing relay contact KM and anti-trip relay contact KCF2 with the common port of anti-trip relay contact KCF1 Hold altogether.Green light GN and resistance R1 series connection after two ends connect respectively the positive pole+WC of control bus, anti-trip relay contact KCF1 with The common port of auxiliary normally opened contact Q1.The 1-3 contact of controlling switch SA, anti-trip relay coil KCFi, auxiliary switch QF2, point Two ends after brake cable circle YT series connection connect the positive pole+WC and negative pole-WC of control bus respectively.Red light RD and resistance R2 series connection after with The 1-3 contact shunt of controlling switch SA.1-3 contact with controlling switch SA after anti-trip relay contact KCF3 and resistance R3 series connection In parallel.Protection exit relay contact KOM and the 1-3 contact shunt of controlling switch SA.Auxiliary normally-closed contact Q2a, energy storage motor Two ends after M, auxiliary normally-closed contact Q2b series connection connect the positive pole+WOM and negative pole-WOM of closing bus bar respectively.

Operation principle of the present utility model is as follows：When breaker no auto recloser, go here and there in its closing circuit There is the auxiliary normally opened contact Q1 of operating mechanism.Only put in place in spring straining, after auxiliary normally opened contact Q1 closure, just allow to close Lock.When spring is not strained, two couples auxiliary normally-closed contact Q2 closure of operating mechanism starts energy storage motor M, so that switching-in spring is drawn Tightly.After spring straining, two disconnect to auxiliary normally-closed contact Q2, the auxiliary normally opened contact Q1 closure in closing circuit, energy storage motor M Stop operating.Now, carry out closing by hand operation, closing coil YC is powered, so that breaker is carried out using the energy that spring stores Close a floodgate.Switching-in spring is after releasing energy, and automatic energy storage, prepares for next action.When breaker is equipped with automatic reclosing When, run because switching-in spring is normal and be in energy storage state, so the action of single shot reclosing can be reliably completed.If overlapped Unsuccessful and trip it is impossible to carry out second coincidence, but in order to ensure reliable " anti-jump ", in circuit, still have anti-jump measure.When When spring is not strained, the auxiliary normally-closed contact Q2 closure of operating mechanism, send " spring is not strained " signal.

The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to In this, in any those skilled in the art technical scope disclosed in the utility model, the change that can readily occur in Change or replace, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with described Scope of the claims is defined.

Claims (1)

1. a kind of outdoor high-voltage spring operate vacuum circuit breaker control circuit it is characterised in that：Including control bus (+WC ,- WC) and closing bus bar (+WOM ,-WOM), first fuse (1FU), second fuse (2FU) respectively with described control bus Positive pole (+WC), negative pole (- WC) connect, and the 3rd fuse (3FU), the 4th fuse (4FU) are respectively with described closing bus bar just Pole (+WOM), negative pole (- WOM) connect；Automatic closing relay contact (KM), anti-trip relay second contact (KCF2), anti-jump Two ends after relay second coil (KCFu) series connection connect positive pole (+WC) and the negative pole (- WC) of control bus respectively；Control is opened Close the 2-4 contact of (SA), anti-trip relay first contact (KCF1), auxiliary normally opened contact (Q1), the first auxiliary switch (QF1), Two ends after closing coil (YC) series connection connect positive pole (+WC) and the negative pole (- WC) of control bus respectively；Controlling switch (SA) 2-4 contact is connected automatic closing relay contact (KM) and anti-jump relay with the common port of anti-trip relay first contact (KCF1) The common port of device second contact (KCF2)；Two ends after green light (GN) and first resistor (R1) series connection connect control bus respectively Positive pole (+WC), anti-trip relay first contact (KCF1) and the common port assisting normally opened contact (Q1)；The 1- of controlling switch (SA) Two ends after 3 contacts, anti-trip relay first coil (KCFi), the second auxiliary switch (QF2), switching winding (YT) are connected are distinguished Connect positive pole (+WC) and the negative pole (- WC) of control bus；With controlling switch (SA) after red light (RD) and second resistance (R2) series connection 1-3 contact shunt；1-3 with controlling switch (SA) behind anti-trip relay the 3rd contact (KCF3) and 3rd resistor (R3) series connection Contact shunt；Protection exit relay contact (KOM) and the 1-3 contact shunt of controlling switch (SA)；First auxiliary normally-closed contact (Q2a), energy storage motor (M), second auxiliary normally-closed contact (Q2b) series connection after two ends connect respectively closing bus bar positive pole (+ ) and negative pole (- WOM) WOM.