CN209150725U - A kind of 0.4kV A.C. contactor shifting switch route series winding automatic pressure regulating device - Google Patents

Abstract

The utility model discloses a kind of 0.4kV A.C. contactor shifting switch route series winding automatic pressure regulating devices, including cabinet body, the hinged cabinet door in cabinet body side, multiple radiating grooves are provided in cabinet door, interior of the cabinet is equipped with voltage regulator module, voltage regulator module includes auto-type transformer, A.C. contactor and pressure regulator control system, auto-type transformer inner cavity is equipped with three pillar type iron core, there are three windings altogether on three pillar type iron core, it is three-phase shunt connection of excitation wind respectively, three-phase series excitation winding and single-phase control winding, three-phase series excitation winding has multiple taps, multiple taps are connected between input and output by the different contacts of tap switch, three-phase shunt connection of excitation wind is public winding；Secondary side of the single-phase control winding as one phase of shunt connection of excitation wind, the utility model guarantee that constant output voltage meets the requirements surely, are adjusted in a certain range to line voltage distribution, guarantee the supply voltage of user, reduce the line loss of route by adjusting pressure regulator no-load voltage ratio.

Description

A kind of 0.4kV A.C. contactor shifting switch route series winding automatic pressure regulating device

Technical field

The utility model relates to voltage-regulating technique field, specially a kind of 0.4kV A.C. contactor shifting switch route series winding Automatic pressure regulating device.

Background technique

Voltage is one of electric energy primary quality measure, it is to the stabilization of power grids and power equipment safety operation, line loss, work Secure agricultural production and people's lives electricity consumption have a direct impact.Brownout will cause equipment undercapacity or work is abnormal, Overtension will affect the safety of electricity consumption again.At present there are two ways to common adjusting voltage: one is to change distribution transformer Device no-load tap pressure regulation, this method cannot be guaranteed the voltage stabilization of whole separated time roads, and frequently adjust distribution transformer Tap influences the safe operation of distribution transformer bigger；Another method is 0.4kV switched capacitor, to reduce route Idle pressure drop achievees the purpose that pressure regulation, and the method applicable surface is limited, range of regulation is small, it is difficult to achieve the desired results.On solving The limitation for stating two kinds of pressure regulation methods has developed a kind of 0.4kV route series winding automatic voltage regulator device, it is that one kind can be automatic No-load voltage ratio is adjusted to guarantee the device of output voltage stabilization.

Utility model content

The purpose of this utility model is to provide a kind of 0.4kV A.C. contactor shifting switch route series winding automatic Regulation dresses It sets, to solve the problems mentioned in the above background technology.

To achieve the above object, the utility model provides the following technical solutions: a kind of 0.4kV A.C. contactor shifting switch Route is contacted automatic pressure regulating device, including cabinet body, the hinged cabinet door in cabinet body side, is provided with multiple radiating grooves in the cabinet door, The interior of the cabinet is equipped with voltage regulator module, and the voltage regulator module includes auto-type transformer, A.C. contactor and pressure regulator Control system, the auto-type transformer inner cavity are equipped with three pillar type iron core, and it is three respectively that there are three windings altogether on three pillar type iron core Phase shunt connection of excitation wind, three-phase series excitation winding and single-phase control winding, three-phase series excitation winding have multiple taps, and multiple taps pass through tap The different contacts of switch are connected between input and output, and three-phase shunt connection of excitation wind is public winding；Single-phase control winding is as simultaneously Encourage the secondary side of one phase of winding.

Preferably, the pressure regulator control system includes single-phase three gears control circuit, single-phase four gears control circuit and three Phase four keeps off control circuit, and the single-phase three gears control circuit includes the first A.C. contactor, the first air switch, the first arrester With the first current transformer, first A.C. contactor is arranged three, is connect on autocoupling type transformer tapping respectively, described first The first A.C. contactor is connected in series in air switch, and first current transformer and the first arrester are installed in input terminal electricity On the line of source.

Preferably, the single-phase four gears control circuit includes the second A.C. contactor, the second air switch, the second arrester With the second current transformer, second A.C. contactor is arranged four, is connect in auto-type transformer tap respectively, and described the Two current transformers are connected in series the second air switch and are attempted by input terminal power supply line, and second arrester is mounted on output It holds on power supply line.

Preferably, it includes three groups of single-phase four gears control circuits that the three-phase four, which keeps off control circuit, and three groups of single-phase four gears are controlled Circuit in parallel processed connects the input terminal and output end in power supply.

Compared with prior art, the utility model has the beneficial effects that the utility model is protected by adjusting pressure regulator no-load voltage ratio It demonstrate,proves constant output voltage to meet the requirements surely, line voltage distribution is adjusted in a certain range, guarantee the supply voltage of user, Reduce the line loss of route.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the single-phase three gears control circuit schematic diagram of the utility model；

Fig. 3 is the single-phase four gears control circuit schematic diagram of the utility model；

Fig. 4 is that the utility model three-phase four keeps off control circuit schematic diagram.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, the utility model provides a kind of technical solution: a kind of 0.4kV A.C. contactor shifting switch route It contacts automatic pressure regulating device, including cabinet body 1, the hinged cabinet door 2 in 1 side of cabinet body is provided with multiple radiating grooves 3 in the cabinet door 2, Voltage regulator module is equipped with inside the cabinet body 1, the voltage regulator module includes auto-type transformer 4, A.C. contactor and pressure regulation Device control system 5, A.C. contactor changeover contact in load-carrying situation adjust transformer voltage ratio to keep stable output Voltage.According to different requirements, the load ratio bridging switch of one-way pressure-regulating device is 3 gears, and the load ratio bridging switch of bidirectional pressure regulating device is 4 Gear；4 inner cavity of auto-type transformer is equipped with three pillar type iron core, altogether there are three winding on three pillar type iron core, be respectively three-phase simultaneously Winding, three-phase series excitation winding and single-phase control winding are encouraged, three-phase series excitation winding there are multiple taps, and multiple taps pass through tap switch Different contacts be connected on input and output between, three-phase shunt connection of excitation wind be public winding；Single-phase control winding as shunt excitation around The secondary side of one phase of group.Pressure regulator control system acquires line voltage distribution, current signal and tap switch shift signal, according to program The pressure regulation strategy of setting issues pressure regulation order, realizes on-load voltage regulation.With breaker with the use of the protection realized to equipment.

As shown in Fig. 2, pressure regulator control system includes single-phase three gears control circuit, single-phase four gear control circuit and three-phase Four gear control circuits, the single-phase three gears control circuit includes the first A.C. contactor 6, the first air switch 7, the first arrester 8 and first current transformer 9, first A.C. contactor 6 be arranged three, connect in 4 tap of auto-type transformer respectively, institute It states the first air switch 7 and the first A.C. contactor 6 is connected in series, first current transformer 9 and the first arrester 8 are respectively mounted On input terminal power supply line.

As shown in figure 3, single-phase four gear control circuit is kept away including the second A.C. contactor 10, the second air switch 11, second Thunder device 12 and the second current transformer 13, second A.C. contactor 10 are arranged four, connect take out in auto-type transformer 4 respectively On head, second current transformer 13 is connected in series the second air switch 11 and is attempted by input terminal power supply line, and described second Arrester 12 is mounted on output end power line.

As shown in figure 4, it includes three groups of single-phase four gears control circuits that three-phase four, which keeps off control circuit, and three groups of single-phase four gears control Circuit in parallel connects the input terminal and output end in power supply.

When input voltage is lower than setting value, controller automatically controls tap changer movement step-up transformer investment, output electricity Pressure increases.Present input voltage is higher than setting value, and controller automatically controls tap changer movement step-up transformer and exits.Work as power supply System is not able to satisfy when equipment normal work requires or when device fails.Controller automatically controls tap changer movement and exits Step-up transformer simultaneously puts into by-pass switch.Monitoring software of the equipment equipped with profession, can monitor equipment in real time；Voltage The range of adjust automatically is -10%~30%Un of voltage rating, and pressure regulation process control automatically controls simultaneous manually control；Pressure regulation Process control automatically controls simultaneous manually control；Using autocoupling type pressure adjusting structure, keep the capacity of whole device big and small in size, structure letter It is single, it is easily installed maintenance；Output voltage variation adjustment tap switch gear is automatically tracked, voltage Adjustment precision is high, reliable in action, It can guarantee user's voltage requirement.

Control system can monitor the output voltage and electric current of pressure regulator, when the deviation of output voltage values and reference voltage value Greater than allowed band and more than after the corresponding time, control system, which issues instruction, acts three-phase load ratio bridging switch, and control is System should have the function of issuing trip command to pole-mounted circuit breaker in circuit overload, and control system should have when pressure regulator goes out Trip command is issued to the pole-mounted circuit breaker provided protection against when line end voltage is more than 1.3Um, to the column of offer bypass functionality Upper breaker issues the function of reclosing command, and control system should have data storage function, can store three months action records, Defencive function: integral point record, maximum voltage, electric current, fault message are equipped with overcurrent protection, when pressure regulator is in over-current state Control system automatic blocking；Equipped with under-voltage protection, when line voltage distribution is in under-voltage condition, control system automatic blocking；It is equipped with Day action frequency limitation protection, when action frequency reaches setting value, control system automatic blocking；With top gear, most low gear Position limitation protection prevents the maloperation being likely to occur under various modes；Communication function: equipment should have that there are two independent RS232 is logical Believe interface, the monitoring of 30~50m spacing can be both realized by short-distance wireless module, while can also realize by GPRS remote Journey communication.When being communicated using GPRS module, should meet can monitor pressure regulator input terminal voltage on terminal computer, output end electricity Pressure, the state of the gear of pressure regulator, electric current and pressure regulator front end breaker；And it can remotely be repaired by computer and GPRS realization Change the parameter of pressure regulator, control pressure regulator ascending, descending gear.Supplier is responsible for providing GPRS communication module, has the item of signal in mobile phone Under part, the online rate 100% of GPRS, and be responsible for the equipment accessing background monitoring system.

0.4kV automatic feeder line voltage regulator can automatically adjust to input voltage in the range of -10%~30%, fit For the route that voltage fluctuation is big or pressure drop is big.Pressure regulator is mounted on the middle rear end of feeder line, in a certain range to route Voltage is adjusted, and guarantees the supply voltage of user, reduces the line loss of route.

In conclusion the utility model by adjusting pressure regulator no-load voltage ratio, guarantees that constant output voltage meets the requirements surely, Line voltage distribution is adjusted in a certain range, guarantees the supply voltage of user, reduces the line loss of route.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. The automatic pressure regulating device 1. a kind of 0.4kV A.C. contactor shifting switch route is contacted, including cabinet body (1), it is characterised in that: The hinged cabinet door in cabinet body (1) side (2) is provided with multiple radiating grooves (3) on the cabinet door (2), is equipped with inside the cabinet body (1) Voltage regulator module, the voltage regulator module include auto-type transformer (4), A.C. contactor and pressure regulator control system (5), institute Auto-type transformer (4) inner cavity is stated equipped with three pillar type iron core, altogether there are three winding on three pillar type iron core, be three-phase shunt excitation respectively around Group, three-phase series excitation winding and single-phase control winding, three-phase series excitation winding have multiple taps, and multiple taps pass through tap switch not It is connected between input and output with contact, three-phase shunt connection of excitation wind is public winding；Single-phase control winding is as shunt connection of excitation wind one The secondary side of phase.
2. The automatic pressure regulating device 2. a kind of 0.4kV A.C. contactor shifting switch route according to claim 1 is contacted, it is special Sign is: the pressure regulator control system includes single-phase three gears control circuit, single-phase four gear control circuit and the gear control of three-phase four Circuit processed, the single-phase three gears control circuit includes the first A.C. contactor (6), the first air switch (7), the first arrester (8) it is arranged three with the first current transformer (9), first A.C. contactor (6), is connect respectively in auto-type transformer (4) In tap, the first A.C. contactor (6) are connected in series in first air switch (7), first current transformer (9) and the One arrester (8) is installed on input terminal power supply line.
3. The automatic pressure regulating device 3. a kind of 0.4kV A.C. contactor shifting switch route according to claim 2 is contacted, it is special Sign is: the single-phase four gears control circuit includes the second A.C. contactor (10), the second air switch (11), the second arrester (12) it is arranged four with the second current transformer (13), second A.C. contactor (10), is connect respectively in auto-type transformer (4) in tap, second current transformer (13) is connected in series the second air switch (11) and is attempted by input terminal power supply line, Second arrester (12) is mounted on output end power line.
4. The automatic pressure regulating device 4. a kind of 0.4kV A.C. contactor shifting switch route according to claim 2 is contacted, it is special Sign is: it includes three groups of single-phase four gears control circuits that the three-phase four, which keeps off control circuit, and three groups of single-phase four gears control circuits are simultaneously Connection connects input terminal and output end in power supply.