CN208015376U - A kind of relay system phase-change switch preventing installation short circuit - Google Patents
A kind of relay system phase-change switch preventing installation short circuit Download PDFInfo
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- CN208015376U CN208015376U CN201820096683.9U CN201820096683U CN208015376U CN 208015376 U CN208015376 U CN 208015376U CN 201820096683 U CN201820096683 U CN 201820096683U CN 208015376 U CN208015376 U CN 208015376U
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- 230000005611 electricity Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 6
- 238000011017 operating method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 241000519996 Teucrium chamaedrys Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
A kind of relay system phase-change switch preventing installation short circuit, belongs to for electrical domain.The relay system phase-change switch includes three-phase phase-change switch, and before A, B, C phase end of incoming cables of three-phase phase-change switch, a 1P miniature circuit breaker is respectively set；The end of incoming cables of three 1P miniature circuit breakers, respectively connection corresponding with A, B, C of incoming power, the leading-out terminal of three 1P miniature circuit breakers are correspondingly connected with A, B, C phase end of incoming cables of three-phase phase-change switch respectively；Three 1P miniature circuit breakers, can individually realize the break-make between three-phase phase-change switch A, B, C phase end of incoming cables and A, B, C phase of incoming power.It had not only remained all advantages of original 3P miniature circuit breakers pattern phase-change switch, but also overcame the phase fault problem easily caused when phase-change switch is installed under 3P miniature circuit breaker connection modes.It can be widely used for low-voltage power supply or Regulation field.
Description
Technical field
The utility model belongs to for electrical domain, more particularly to a kind of for that can make the alternate sharing of load tune of three-phase power line
The switching device of whole equilibrium.
Background technology
Power supply system as a whole, in three-phase power line, the sharing of load equilibrium between each phase line is very
It is necessary to, this is not only related to the phase line current equalization problem of three-phase power line, also relates to and reduces line loss, power grid
Economical operation and safety etc. all various aspects problem.Due to the imbalance of power supply system three-phase load, a certain phase load is bigger than normal,
Line loss is set to increase.Meanwhile this phase line works under heavy load, can not only influence the operational safety of transformer, but also reduce
The power supply capacity of transformer.
So in three-phase power line phase specific electric load equilibrium assignment, economy, safe operation to entire power distribution network, with
And ensure the reliability of controller switching equipment, it is very crucial.
Install three-phase phase-change switch additional in low-voltage network, the adjustment load unbalanced for low-voltage network is to solve
Three-phase load unbalance reduces line loss, improves the important technique measure of line end low-voltage.
As shown in fig. 1, the circuit structure for the relay system phase-change switch H major loops part passed through currently on the market leads to
Chang Yousan on-off type relay J1, J2, J3 composition, on-off type relay J1, J2, J3 therein are three single-phase split type knots
Structure；Its front end is connected respectively on A, B, C three-phase line, and rear end output links together, and is controlled by phase-change switch control circuit
System, on-off type relay J1, J2, J3 can carry out switching action respectively, but every time can only a connection, can be by A, B, C three-phase electricity
Any phase in source switches to the output end L of phase-change switch, constitutes the whole main wiring circuit of phase-change switch.
To prevent phase fault and line short accident, cause to each on-off type relay J1 in phase-change switch H,
J2, J3 are damaged, and on the circuit of the front ends phase-change switch H, need to usually installing a 3P miniature circuit breakers K additional again, (P is represented herein
Pole, 1P, 3P refer to the number of poles of breaker, and 1P indicates that the switch of break-make power supply all the way, 3P indicate the switch of break-make three-way power, 3P+N
Indicate that three-way switch adds a zero curve, meanwhile, 1P indicates that miniature circuit breaker is single-phase switch single action form, and 3P indicates that threephase switch is same
Shi Liandong, this belongs to known technology in the industry.Similarly hereinafter), using the short-circuit protection characteristic of 3P midget relays K, to ensure that phase is occurring
Between short circuit and when line short accident, play the protective effect to phase-change switch H repeat circuits.
The advantages of this Connection Mode and working method：
One, simple in structure, it is at low cost；
Two, functional reliability compares switching relay height；
Three, it, using the short-circuit protection characteristic of 3P miniature circuit breakers K, can be played when phase fault or line short occurs
Protective effect to each relay in phase-change switch H.
But find in actual operation, above-mentioned this Connection Mode and working method have the following problems：
First, when mounted, because the original state position of break-make relay J1, J2, J3 are uncertain, when there are two or three after
Electric appliance simultaneously all in on-state in the case of, when 3P miniature circuit breaker K combined floodgate power transmissions, phase fault accident will occur.
Avoid the generation of such accident, when debugging needs qualified installation person to be operated in strict accordance with certain method flow
, careless slightly to occur phase fault accident, it is very dangerous, cause very big obstacle to engineering construction.
Second, when the control circuit of phase-change switch H or break-make relay J1, J2 or the J3 for the phase that works break down, cause
Circuit powers off, if control circuit control failure occurs simultaneously, and is when being happened at night or sleet sky, phase-change switch is replaced in inconvenience
In the case of, fast recovery of power supply, external bypass measure can only be taken, entire phase-change switch H is skipped and carries out wiring, implement
It very bothers, is not easy to fast recovery of power supply.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of relay system phase-change switches preventing installation short circuit.
By the 3P miniature circuit breaker K of original connection phase-change switch, it is changed to three independences in phase-change switch enclosure interior or external connection
1P miniature circuit breaker K1, K2, K3, be connected respectively first to third relay J1, J2, J3 form.It both remains original
There are all advantages of 3P miniature circuit breaker pattern phase-change switches, and overcome its wretched insufficiency so that on-off type relay changes
Phase switching technique has a qualitative leap.
The technical solution of the utility model is：A kind of relay system phase-change switch preventing installation short circuit, including three are provided
Phase phase-change switch, the three-phase phase-change switch include first to third on-off type relay J1, J2, J3 and corresponding automatically controlled mould
Block；The electronic control module includes corresponding control circuit and a functional switch GK；The functional switch at least provided with
" initialization ", " commutation " and " power supply " three gears；It is characterized in that：
Before A, B, C phase end of incoming cables of three-phase phase-change switch, a 1P miniature circuit breaker is respectively set；
The end of incoming cables of three 1P miniature circuit breakers, connection corresponding with A, B, C of incoming power respectively, described three
The leading-out terminal of 1P miniature circuit breakers is correspondingly connected with A, B, C phase end of incoming cables of three-phase phase-change switch respectively.
Further, three 1P miniature circuit breakers are arranged inside or outside three-phase phase-change switch shell.
Further, three 1P miniature circuit breakers are by A phase miniature circuit breaker K1, B phase miniature circuit breaker K2 and C phases
Miniature circuit breaker K3 compositions；
Wherein, the end of incoming cables of A phases miniature circuit breaker K1, connection corresponding with the A of incoming power, A phase miniature circuit breakers K1
Leading-out terminal, be correspondingly connected with the A phases end of incoming cables of three-phase phase-change switch；
The end of incoming cables of B phase miniature circuit breakers K2, connection corresponding with the B of incoming power, the outlet of B phase miniature circuit breakers K2
End, is correspondingly connected with the B phases end of incoming cables of three-phase phase-change switch；
The end of incoming cables of C phase miniature circuit breakers K3, connection corresponding with the C of incoming power, the outlet of C phase miniature circuit breakers K3
End, is correspondingly connected with the C phases end of incoming cables of three-phase phase-change switch.
Further, described first to third on-off type relay J1, J2, J3 is magnetodynamic relay.
Compared with the prior art, the utility model has the advantages that：
1. the technical program solves phase-change switch installation under 3P miniature circuit breakers (referred to as micro- disconnected, similarly hereinafter) connection mode
The phase fault problem easily caused：In a pre-installation, first that three 1P micro- disconnected K1, K2, K3 is all off, you can be installed, waited for
It installs, connecting with the mains can be debugged.
2. this technology side solves the problems, such as the fast recovery of power supply after phase-change switch damage power failure, stop in phase-change switch damage
When emergency recovery is powered after only powering, only need first to get to the functional switch GK on phase-change switch shell on the position of " power supply ",
The phase-change switch has just exited the working condition of three-phase load adjust automatically, can carry out " power supply " setting thereafter.
3. the technical program, which is suitable for phase reversal relay formula phase-change switch front end, connects the micro- disconnected connection modes of 1P, advantage
2 are also applied for the phase reversal relay formula phase-change switch front end connection micro- disconnected connection modes of 3P.It is applicable not only to single-phase accessory power supply
Phase-change switch, be also applied for the phase-change switch of three-phase accessory power supply.
4. the technical program is easy to operate, without bypass measure, the maintenance workers of live operating electrician are significantly reduced
Make, and can restore electricity in time, improves the efficiency of operation of power grid.
Description of the drawings
Fig. 1 is the major loop electrical connection schematic diagram that existing phase-change switch front end installs 3P miniature circuit breakers additional；
Fig. 2 is the major loop electrical connection signal that the utility model phase-change switch front end installs 3 1P miniature circuit breakers additional
Figure；
Fig. 3 is the major loop electrical connection pass that the utility model another kind phase-change switch front end installs 3 1P miniature circuit breakers additional
It is schematic diagram；
Fig. 4 is the major loop electrical connection schematic diagram of the technical program embodiment.
K is existing 3P miniature circuit breakers in figure, and H is phase-change switch, and K1 to K3 is the first to the 3rd 1P miniature circuit breakers, J1
It is first to third permanent-magnet relay to J3, A, B, C are three phase mains, and L is that the first output end of phase-change switch (is commonly called as
Firewire), N is the second output terminal (zero curve being commonly called as) of phase-change switch, and GK is functional switch, and A, B, C are corresponding to A, B, C phase
First to third phase key switch.
Specific implementation mode
The utility model is described further with reference to the accompanying drawings and examples.
In Fig. 2 and Fig. 3, the technical solution of the utility model provide it is a kind of prevent installation short circuit relay system commutation open
It closes, including three-phase phase-change switch, the three-phase phase-change switch includes first to third on-off type relay J1, J2, J3 and right
The electronic control module answered；The electronic control module include corresponding control circuit and a functional switch GK and three key switch A,
B,C.The functional switch has " initialization ", " commutation " and " power supply " three gears, and difference is in control electronic control module
Operating mode；Three described key switches A, B, the C, to manually control the break-make or line Phases of three relays respectively
Switching, inventive point is：
Before A, B, C phase end of incoming cables of three-phase phase-change switch H, 1P miniature circuit breakers K1, K2, a K3 is respectively set
(referred to as micro- disconnected, similarly hereinafter)；
The end of incoming cables of three 1P miniature circuit breakers K1, K2 and K3, connection corresponding with A, B, C of incoming power respectively, three
The leading-out terminal of a 1P miniature circuit breakers K1, K2 and K3 are correspondingly connected with A, B, C phase end of incoming cables of three-phase phase-change switch H respectively；
In the technical scheme, three 1P miniature circuit breaker K1, K2 and K3 can individually realize three-phase phase-change switch
A, the break-make between B, C phase end of incoming cables and A, B, C phase of incoming power.
In the technical scheme, three 1P miniature circuit breakers can be arranged in the enclosure interior of three-phase phase-change switch or outer
Portion.
Fig. 2 show three 1P miniature circuit breakers and embodiment in three-phase phase-change switch enclosure interior is arranged, and Fig. 3 is shown
The embodiment in three-phase phase-change switch hull outside is arranged in three 1P miniature circuit breakers.
Specifically, described first to third on-off type relay J1, J2, J3 be magnetodynamic relay (abbreviation relay,
Similarly hereinafter).
Further, three 1P miniature circuit breakers are by A phase miniature circuit breaker K1, B phase miniature circuit breaker K2 and C phases
Miniature circuit breaker K3 compositions, wherein the end of incoming cables of A phase miniature circuit breakers K1, connection corresponding with the A of incoming power, A phases are miniature
The leading-out terminal of breaker K1 is correspondingly connected with the A phases end of incoming cables of three-phase phase-change switch；Wherein, the inlet wire of B phases miniature circuit breaker K2
End, connection corresponding with the B of incoming power, the leading-out terminal of B phase miniature circuit breakers K2, the B phases end of incoming cables with three-phase phase-change switch
It is correspondingly connected with；The end of incoming cables of C phase miniature circuit breakers K3, connection corresponding with the C of incoming power, C phase miniature circuit breaker K3's goes out
Line end is correspondingly connected with the C phases end of incoming cables of three-phase phase-change switch.
The technical program, need to be according to following behaviour when (" initialization " operates before the power transmission being commonly called as) is debugged in progress " power transmission "
Make step progress：
1) the functional switch GK on the phase-change switch shell is got on " initialization " position, to each in phase-change switch
A relay status position carries out Initialize installation；
2) first miniature circuit breaker K1 corresponding with A is closed, the power supply of phase-change switch subsidiary control loop is connected；
3) first phase key switch " A " corresponding with A on phase-change switch shell is pressed with hand, phase-change switch
Electronic control module will give the coil of its first permanent-magnet relay J1 corresponding with A phase lines to add a backward voltage, make its disconnection；
4) at this point, it is defeated between the output current I of observation phase-change switch fire wire output end " L ", and the end " L " and " 0 " end
Go out voltage V, it is all to show and corresponding to A phase lines after zero to confirm that the output voltage of phase-change switch and output current are shown
The state initialization of one permanent-magnet relay J1 is completed；
5) second miniature circuit breaker K2 corresponding with B phases is closed, then with 2) to the identical operating method of 4) step
Complete the state initialization of second permanent-magnet relay J2 corresponding with B；
6) identical operation similarly, is carried out to the third miniature circuit breaker K3 of C phases, completes third permanent-magnet relay J3
State initialization；
7) the functional switch GK on phase-change switch shell is got on " commutation " position, to the working condition of phase-change switch into
Row Initialize installation；
8) the corresponding first phase key switches " A " of A on phase-change switch shell, the control electricity of phase-change switch are pressed
Road will add a forward voltage to be turned on to the coil of its first permanent-magnet relay J1 corresponding with A, to cut load
Start powered operation on to A phase lines, so far, the Initialize installation of phase-change switch just comes to an end, and phase-change switch is just formal to be entered
To the state of three-phase load adjust automatically；
9) it similarly, if when executing 8) step, presses corresponding with B phases or C on phase-change switch shell
Second phase key switch " B " or third phase key switch " C ", the control circuit of phase-change switch will give its corresponding second
The coil of relay J2 or third relay J3 add a forward voltage to be turned on, to switch to load in B phases or C phase lines
Start powered operation.
" initialization " operation mode before above-mentioned this power transmission both remains connection 3P miniature circuit breaker pattern phase-change switches
All advantages, and overcome its wretched insufficiency.
Operating procedure described in the technical program is suitable for phase reversal relay formula phase-change switch front end and connects the miniature open circuits of 1P
The connection mode of device.
Operating procedure described in the technical program is suitable for the phase-change switch of single-phase accessory power supply, is also applied for three-phase auxiliary
The phase-change switch of power supply.
Although the only slight variation of the improvement of technical solutions of the utility model, plays the work of crucial touch
With just avoiding horse racing with field, it makes the technology of on-off type relay phase-change switch have a qualitative leap.
The operation mode is very succinct, is not necessarily to professional, thoroughly solves because relay " initialization " mode bit is not true
Power grid security problem and debugging difficult problem fixed, that caused installation short circuit causes, substantially increase installation effectiveness, reduce work
Cheng Chengben.
Shown in Fig. 4, " restoring electricity " operation of the technical program follows these steps to carry out, it is assumed that commutation is opened at this time
H is closed to be operated in originally on B phase power supplys.
At this point, three 1P miniature circuit breakers K1 to K3 are in " closed " state, the second permanent-magnet relay J2, which is in, to be connected
State connects the fire wire output end L of B phases power supply and phase-change switch, and from the point of view of entire power supply system, load is supplied by B phase power supplys
Electricity, that is, " being operated on B phase power supplys " being commonly called as.
When the J2 damages of B phase relays disconnect, or so that B phase relays is disconnected because of control circuit damage, phase-change switch H stops
Power supply.
It in the case of the corresponding control circuit of former B phase relays failure again, to restore electricity at this time, need first to open commutation
The functional switch GK closed on shell is got on the position of " power supply ", and the phase-change switch has just exited that " three-phase load is adjusted automatically at this time
It is whole " working condition.
Thereafter want on the manually actuated shell of phase-change switch once again for phase of powering key switch (due to B phase faults, therefore
At this time only may be selected " A " or " C " button, i.e., above-mentioned first or third phase button switch), it is assumed that be C phases, then press mark
Electronic control module for the third phase key switch of " C ", phase-change switch will give C corresponding third permanent magnetism by control circuit
The coil of relay J3 adds a forward voltage to be turned on, and so far powered operation finishes, and phase-change switch is just restored electricity fortune by C phases
Row.
At this point, as shown in Figure 4, three 1P miniature circuit breakers K1 to K3 are in " closed " state, third permanent magnetism relay
Device J3 is in " on " state, connects the fire wire output end L of C phases power supply and phase-change switch, from the point of view of entire power supply system, load
By C phase power supply power supplies, that is, " being operated on C phase power supplys " for being commonly called as.
Above-mentioned " restoring electricity " operating procedure of the technical program is suitable for phase reversal relay formula phase-change switch front end and connects
The connection mode of 1P miniature circuit breakers may be equally suitable for phase reversal relay formula phase-change switch front end connection 3P miniature circuit breakers
Connection mode.
Similarly, " initialization " operating procedure and " restoring electricity " operating procedure before the power transmission described in the technical program, are fitted
For the phase-change switch of single-phase accessory power supply, it is also applied for the phase-change switch of three-phase accessory power supply.
Since the utility model is in phase-change switch enclosure interior or outside, three independent 1P miniature circuit breakers are provided with,
Corresponding first is separately connected to third relay, is both solved easy when phase-change switch is installed under 3P miniature circuit breaker connection modes
The phase fault problem of initiation；Solve the problems, such as the fast recovery of power supply after phase-change switch damage has a power failure again, it is " initial before power transmission
" restoring electricity " after change " is operated or broken down is easy to operate, and without bypass measure, it is electric to significantly reduce scene operation
The maintenance work of work, and can restore electricity in time, improve the efficiency of operation of power grid.
The utility model can be widely used for low-voltage power supply or Regulation field.
Claims (4)
1. a kind of relay system phase-change switch preventing installation short circuit, including three-phase phase-change switch, the three-phase phase-change switch
Including first to third on-off type relay J1, J2, J3 and corresponding electronic control module；The electronic control module includes corresponding control
Circuit processed and a functional switch GK；The functional switch is at least provided with " initialization ", " commutation " and " power supply " three shelves
Position；It is characterized in that：
Before A, B, C phase end of incoming cables of three-phase phase-change switch, a 1P miniature circuit breaker is respectively set；
The end of incoming cables of three 1P miniature circuit breakers, respectively connection corresponding with A, B, C of incoming power, three 1P are micro-
The leading-out terminal of type breaker is correspondingly connected with A, B, C phase end of incoming cables of three-phase phase-change switch respectively.
2. the relay system phase-change switch described in accordance with the claim 1 for preventing installation short circuit, it is characterized in that three 1P
Miniature circuit breaker is arranged inside or outside three-phase phase-change switch shell.
3. the relay system phase-change switch described in accordance with the claim 1 for preventing installation short circuit, it is characterized in that three 1P
Miniature circuit breaker is made of A phase miniature circuit breaker K1, B phase miniature circuit breaker K2 and C phase miniature circuit breakers K3；
Wherein, the end of incoming cables of A phases miniature circuit breaker K1, connection corresponding with the A of incoming power, A phase miniature circuit breaker K1's goes out
Line end is correspondingly connected with the A phases end of incoming cables of three-phase phase-change switch；
The end of incoming cables of B phase miniature circuit breakers K2, connection corresponding with the B of incoming power, the leading-out terminal of B phase miniature circuit breakers K2,
It is correspondingly connected with the B phases end of incoming cables of three-phase phase-change switch；
The end of incoming cables of C phase miniature circuit breakers K3, connection corresponding with the C of incoming power, the leading-out terminal of C phase miniature circuit breakers K3,
It is correspondingly connected with the C phases end of incoming cables of three-phase phase-change switch.
4. it is described in accordance with the claim 1 prevent installation short circuit relay system phase-change switch, it is characterized in that described first to
Third on-off type relay J1, J2, J3 are magnetodynamic relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096683.9U CN208015376U (en) | 2018-01-19 | 2018-01-19 | A kind of relay system phase-change switch preventing installation short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096683.9U CN208015376U (en) | 2018-01-19 | 2018-01-19 | A kind of relay system phase-change switch preventing installation short circuit |
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| Publication Number | Publication Date |
|---|---|
| CN208015376U true CN208015376U (en) | 2018-10-26 |
Family
ID=63884221
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|---|---|---|---|
| CN201820096683.9U Expired - Fee Related CN208015376U (en) | 2018-01-19 | 2018-01-19 | A kind of relay system phase-change switch preventing installation short circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092286A (en) * | 2018-01-19 | 2018-05-29 | 山东卓尔电气有限公司 | A kind of relay system phase-change switch for preventing installation short circuit |
-
2018
- 2018-01-19 CN CN201820096683.9U patent/CN208015376U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092286A (en) * | 2018-01-19 | 2018-05-29 | 山东卓尔电气有限公司 | A kind of relay system phase-change switch for preventing installation short circuit |
| CN108092286B (en) * | 2018-01-19 | 2024-07-09 | 南京今朝电气科技有限公司 | Relay type phase change switch capable of preventing installation short circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee |