CN213402869U - Voltage regulating circuit of nine-gear transformer - Google Patents
Voltage regulating circuit of nine-gear transformer Download PDFInfo
- Publication number
- CN213402869U CN213402869U CN202022456680.1U CN202022456680U CN213402869U CN 213402869 U CN213402869 U CN 213402869U CN 202022456680 U CN202022456680 U CN 202022456680U CN 213402869 U CN213402869 U CN 213402869U
- Authority
- CN
- China
- Prior art keywords
- voltage regulating
- branch
- voltage
- tap
- regulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a voltage regulating circuit of a nine-gear transformer, which comprises a voltage regulating circuit input end, a voltage regulating circuit output end, a main winding, a polarity change-over switch, a voltage regulating winding, a transition switching unit, a rated voltage branch and a voltage regulating branch, wherein a tap at the input end of the main winding is connected with the voltage regulating circuit input end, a tap at the output end of the main winding is connected with the polarity change-over switch and the rated voltage branch in parallel, a tap at the output end of the rated voltage branch is connected with a tap at the output end of the main winding, an output end of the rated voltage branch is connected with an input end of the transition switching unit, the transition switching unit comprises a transition resistor and a transition on-off switch which are connected in parallel, the polarity change-over switch comprises 5 connecting pins and 2 linkage voltage regulating plates, two circuit connecting structures are realized by double linkage of the 2 linkage pressure regulating plates, the positive voltage regulating, compared with the prior art, the pressure regulating branch is reduced, the cost is lower, the volume is smaller, and the structure is more optimized and reasonable.
Description
Technical Field
The utility model belongs to the technical field of distribution transformer technique and specifically relates to a regulator circuit of nine grades of transformers.
Background
The voltage regulation of the transformer is realized by changing the number of turns of a coil (generally a high-voltage coil and low in current) by regulating and connecting a tap joint of the coil at one side of the transformer through a voltage regulating switch (a tap switch), so that the purpose of changing the output voltage is achieved.
The voltage regulation of the transformer is divided into no-load voltage regulation and on-load voltage regulation. The no-load voltage regulation is that the power supply of the transformer is disconnected, then the tap switch is regulated, and then the power supply is connected to ensure that the transformer works normally. The on-load voltage regulation is to keep the power supply off, so that the transformer is provided with a load regulation tap switch in a normal working state. The principle of the transformer is that when a moving contact of a switch is not completely separated from a first gear, a transition circuit is switched on (current between the two gears is limited by a transition resistor) to ensure that the transformer is not powered off, and when the moving contact reaches the other gear, the transition circuit is switched off, so that the adjustment is completed. Besides a transition circuit, the on-load tap changer also has to have good arc extinguishing performance.
For example, the chinese utility model patent application No. CN201910634391.5 discloses an on-load voltage regulating circuit of an interleaved parallel nine-gear transformer with polarity conversion, which comprises a main winding, a voltage regulating winding, a rated voltage branch, a transition switching unit, and five voltage regulating branches. A polarity change-over switch is arranged between the main winding and the voltage regulating winding, and positive and negative voltage regulation is realized by adjusting the connection end of an independent contact of the polarity change-over switch; one end of each voltage regulating branch is respectively connected to two end taps of the voltage regulating winding and each middle tap; and the other ends of the two groups of the three-phase alternating current transformer are adjacently connected in parallel in a staggered mode to form two groups and respectively connected with two input ends of the transition switching unit, the input end of the rated voltage branch is connected with a tap of the output end of the main winding, and the output end of the rated voltage branch is connected with the output end of the voltage regulating circuit. In the whole nine-gear voltage regulation process, the gears are switched for eight times, and the electronic element with the highest on-off frequency in the circuit, namely the vacuum arc extinguish chamber of the transition switching unit, is only required to be opened and closed for four times, so that half of on-off times is saved compared with the prior art. But because above-mentioned 9 grades of voltage regulating circuit need 5 pressure regulating branch road cooperations, its is bulky, with high costs, based on above-mentioned structure, the utility model discloses further optimization improvement has been carried out to it.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a regulating circuit of nine grades of transformers, this regulating circuit can realize nine grades of vary voltages on the whole, but than prior art reduced the circuit figure of pressure regulating branch road, the cost is lower, the volume is littleer, the structure is more optimized rationally.
In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a voltage regulating circuit of nine grades of transformers, including the voltage regulating circuit input, the voltage regulating circuit output, main winding, polarity change over switch, the voltage regulating winding, transition switching unit, rated voltage branch road and voltage regulating branch road, the voltage regulating circuit input is connected in tap to the main winding input, main winding output tap parallel connection polarity change over switch and rated voltage branch road, the input and the main winding output tap of rated voltage branch road are connected, the output and the input of transition switching unit of rated voltage branch road are connected, the transition switching unit includes the parallel circuit structure who is formed by transition resistance and transition on-off switch parallel connection, the first input and the second input of this parallel circuit structure are transition switching unit, the first input is the voltage regulating circuit output concurrently, its characterized in that: the polarity switch comprises 5 connecting pins and 2 linkage plates, wherein the 2 linkage plates are distributed adjacently and move synchronously to form 2 connecting structures which are respectively a positive voltage regulating branch connecting structure and a negative voltage regulating branch connecting structure, each linkage plate can simultaneously conduct the 2 corresponding connecting pins,
the 5 connecting pins are respectively a first connecting pin, a second connecting pin, a third connecting pin, a fourth connecting pin and a fifth connecting pin,
the voltage regulating branch comprises a voltage regulating first branch, a voltage regulating second branch, a voltage regulating third branch and a voltage regulating fourth branch,
the voltage regulating winding comprises four sections of voltage regulating coils wound in the same direction and 5 voltage regulating winding taps, namely a voltage regulating coil L1, a voltage regulating coil L2, a voltage regulating coil L3 and a voltage regulating coil L4; the 5 voltage regulating winding taps are respectively an upper end tap, a lower end tap, an upper middle tap, a lower middle tap and a middle tap,
the output end tap of the main winding is connected with the fourth connecting pin, the fifth connecting pin is connected with the lower end tap, the third connecting pin is connected with the upper end tap, the second connecting pin is connected with the voltage regulating branch, the first connecting pin is connected with the lower end tap, the middle upper connecting tap is connected with the voltage regulating two branch, the middle tap is connected with the voltage regulating three branch, and the middle lower connecting tap is connected with the voltage regulating four branch;
the four voltage-regulating branches are connected with an on-off switch Km in series, one end of each voltage-regulating branch is connected with the second connecting pin, and the other end of each voltage-regulating branch is connected with the first input end of the transition switching unit; the voltage regulating branch is connected with an on-off switch K1 in series, one end of the voltage regulating branch is connected with the upper-middle tap, and the other end of the voltage regulating branch is connected with a second input end of the transition switching unit; the voltage regulating secondary branch is connected with an on-off switch K2 in series, one end of the voltage regulating secondary branch is connected with the middle tap, and the other end of the voltage regulating secondary branch is connected with a first input end of the transition switching unit; the three voltage-regulating branches are connected with an on-off switch K3 in series, one end of each voltage-regulating branch is connected with the middle-lower tap, and the other end of each voltage-regulating branch is connected with the second input end of the transition switching unit.
In the structure, the polarity change-over switch realizes two circuit connection structures through a double linkage structure, the two circuit connection structures realize the switching of nine-gear voltage in a mode of corresponding to 4-gear positive voltage regulation branches and 4-gear reverse voltage regulation branches, and one voltage regulation branch is reduced compared with the prior art.
Furthermore, 5 connection feet of the polarity conversion switch are distributed at intervals along a straight line, 2 linkage pieces are distributed adjacently up and down along the straight line where the 5 connection feet are located, and the 2 linkage pieces are an upper linkage piece and a lower linkage piece respectively.
In the structure, 5 connecting pins of the polarity switch are linearly distributed, and the two 2 linkage pieces can slide along the linear direction to realize switching.
Furthermore, the polarity reversing switch forms 2 connection relations along with the up-and-down sliding of the 2 linkage pieces, the first connection relation is that the upper linkage piece is simultaneously communicated with the first connection pin and the second connection pin, and the lower linkage piece is simultaneously communicated with the third connection pin and the fourth connection pin; the second connection relationship is that the upper linkage piece is simultaneously connected with the second and the third connection pins, and the lower linkage piece is simultaneously connected with the fourth and the fifth connection pins.
In the structure, 2 linkage pieces of the polarity switch form 2 connection relations through sliding, the first connection relation realizes a positive voltage boosting structure of the voltage regulating branch, the second connection relation realizes a negative voltage reducing structure of the voltage regulating branch, and the voltage boosting structure is maintained at a middle gear when rated voltage is supplied, so that smooth switching of a 9-gear circuit under the condition of no power failure is realized.
Furthermore, a transition on-off switch in the transition switching unit adopts a vacuum arc-extinguishing chamber.
In the structure, the transition switching unit provides short-circuit protection for the voltage switching process, and the vacuum arc-extinguishing chamber is adopted, so that the safety performance of the transformer is improved, and the service life of the transformer is prolonged.
Furthermore, the on-off switches connected in series on the voltage regulating branch and the rated voltage branch adopt vacuum arc-extinguishing chambers.
In the structure, under a high-voltage environment, the electric arc is easy to generate for conducting by adopting the on-off of a common switch, and the safety performance of the transformer is improved and the service life of the transformer is prolonged by adopting the vacuum arc extinguish chamber.
Adopt above-mentioned scheme, the utility model has the advantages of overall structure is more reasonable, whole small, the technology degree of difficulty reduces, manufacturing cost reduces.
The present invention will be further described with reference to the accompanying drawings.
Drawings
Fig. 1 is a five-stage circuit structure diagram of a first linkage structure in an embodiment of the present invention;
fig. 2 is a circuit diagram of a first step of the first linkage structure according to the embodiment of the present invention after the fifth gear up shift and the sixth gear up shift;
fig. 3 is a circuit diagram of the first linkage structure after the second step of the fifth gear up shift and the sixth gear up shift;
fig. 4 is a structural circuit diagram of a sixth gear of the first linkage structure according to the embodiment of the present invention;
fig. 5 is a circuit diagram of a first step of the first linkage structure after the sixth gear seventh gear up shift operation according to the embodiment of the present invention;
fig. 6 is a circuit diagram of a structure after a second step of six-gear seven-gear up-shift of the first linkage structure according to the embodiment of the present invention;
fig. 7 is a circuit diagram of a seventh-gear structure of a first linkage structure according to an embodiment of the present invention;
fig. 8 is a circuit diagram of the structure of the first step of the seventh-gear eighth-gear up-shift of the first linkage structure according to the embodiment of the present invention;
fig. 9 is a circuit diagram of the structure after the second step of the seventh-gear up-shift of the first linkage structure according to the embodiment of the present invention;
fig. 10 is a structural circuit diagram of eight steps of the first linkage structure according to the embodiment of the present invention;
fig. 11 is a circuit diagram of the first step of eight-gear nine-gear up operation of the first linkage structure according to the embodiment of the present invention;
fig. 12 is a circuit diagram of the structure after the second step of eight-gear nine-gear up shift of the first linkage structure according to the embodiment of the present invention;
fig. 13 is a structural circuit diagram of a ninth gear of the first linkage structure according to the embodiment of the present invention;
fig. 14 is a five-stage circuit diagram of a second linkage according to an embodiment of the present invention;
fig. 15 is a circuit diagram of a fifth gear down and a fourth gear down of the second linkage according to the embodiment of the present invention after the first step;
fig. 16 is a circuit diagram of the fifth gear down-shift and fourth gear down-shift second step of the second linkage according to the embodiment of the present invention;
fig. 17 is a structural circuit diagram of a fourth gear of the second linkage structure according to the embodiment of the present invention;
fig. 18 is a circuit diagram of the second linkage according to the embodiment of the present invention after the first step of the fourth gear down and the third gear down;
fig. 19 is a circuit diagram of the second embodiment of the present invention after the fourth gear down and the third gear down operation;
fig. 20 is a circuit diagram of a third gear of a second linkage according to an embodiment of the present invention;
fig. 21 is a circuit diagram of the second linkage according to an embodiment of the present invention after the first step of the third gear down shift;
fig. 22 is a circuit diagram illustrating the second linkage of the embodiment of the present invention after the second step of the third gear down;
fig. 23 is a structural circuit diagram of the second gear of the second linkage according to the embodiment of the present invention;
fig. 24 is a circuit diagram illustrating a second linkage structure after a first step of second gear down operation according to an embodiment of the present invention;
fig. 25 is a circuit diagram of the second linkage according to the embodiment of the present invention after the second step of the second gear down;
fig. 26 is a circuit diagram of a first stage of a second linkage according to an embodiment of the present invention.
Detailed Description
In the present invention, the input terminal and the output terminal are defined for clearly expressing the connection relationship of the constituent parts of the circuit, wherein "input" and "output" are used only for distinguishing different connection terminals, and do not represent the flowing or transmitting direction of the current or signal. The utility model discloses a concrete implementation is shown in fig. 1-26 is voltage regulating circuit of nine grades of transformers, it includes the voltage regulating circuit input, voltage regulating circuit output Xo, main winding L, polarity change over switch Kj, the voltage regulating winding, the transition switching unit, rated voltage branch road and voltage regulating branch road, main winding input tap A connects the voltage regulating circuit input, main winding output tap Xi parallel connection polarity change over switch Kj and rated voltage branch road, the input and the main winding output tap Xi of rated voltage branch road are connected, the output and the input of transition switching unit of rated voltage branch road are connected, be connected with first input T1 in this embodiment.
The transition switching unit comprises a parallel circuit structure formed by connecting a transition resistor R and a transition on-off switch K0 in parallel, the two ends of the parallel circuit structure are a first input end T1 and a second input end T2 of the transition switching unit, and the first input end is also used as an output end Xo of the voltage regulating circuit.
Polarity transfer switch Kj includes 5 connection feet and 2 linkage pieces, and every linkage piece can switch on its 2 connection feet that correspond respectively simultaneously respectively, 2 linkage pieces connect 4 connection feet on the polarity transfer switch promptly, and 2 linkage pieces are adjacent to be distributed, each other do not overlap, and synchronous motion forms 2 connection structure. Polarity transfer switch's 5 connect the foot by the picture from top to bottom distribute be first connecting pin, second respectively, the foot is connected to the third, the foot is connected to the fourth, the foot is connected to the fifth, 5 connect the foot along a straight line interval distribution, 2 linkage pieces are adjacent distribution about 5 connection foot place straight lines are along, 2 linkage pieces are last linkage piece and lower linkage piece respectively. The polarity reversing switch forms 2 connection relations along with the up-and-down sliding of the 2 linkage pieces, the first connection relation is that the upper linkage piece is simultaneously communicated with the first connecting pin and the second connecting pin, and the lower linkage piece is simultaneously communicated with the third connecting pin and the fourth connecting pin; the second connection relationship is that the upper linkage piece is simultaneously connected with the second and the third connection pins, and the lower linkage piece is simultaneously connected with the fourth and the fifth connection pins.
The voltage regulating branch comprises a voltage regulating first branch, a voltage regulating second branch, a voltage regulating third branch and a voltage regulating fourth branch (which respectively correspond to on-off switches K1, K2, K3 and Km).
The voltage regulating winding comprises four sections of voltage regulating coils wound in the same direction, namely a voltage regulating coil L1, a voltage regulating coil L2, a voltage regulating coil L3 and a voltage regulating coil L4, the voltage regulating winding comprises 5 voltage regulating winding taps, namely an upper end tap X1, a lower end tap X5, an upper middle tap X2, a middle lower tap X4 and a middle tap X3, the upper middle tap X2 serves as a lower end tap of the voltage regulating coil L1 and an upper end tap of the voltage regulating coil L2, the middle tap X3 serves as a lower end tap of the voltage regulating coil L2 and an upper end tap of the voltage regulating coil L3, and the middle lower tap X3 serves as a lower end tap of the voltage regulating coil L3 and an upper end tap of the voltage regulating coil L4.
The tap Xi at the output end of the main winding is connected with a fourth connecting pin, a fifth connecting pin is connected with a tap X5 at the lower end, a third connecting pin is connected with a tap X1 at the upper end, a second connecting pin is connected with a voltage regulating branch, a first connecting pin is connected with a tap X5 at the lower end, an upper middle tap X2 is connected with a voltage regulating two branch, a middle tap X3 is connected with a voltage regulating three branch, and a lower middle tap X4 is connected with a voltage regulating four branch;
the voltage regulating four-branch circuit is connected with an on-off switch Km in series, one end of the voltage regulating four-branch circuit is connected with the second connecting pin, and the other end of the voltage regulating four-branch circuit is connected with a first input end T1 of the transition switching unit; the voltage regulating branch is connected with an on-off switch K1 in series, one end of the voltage regulating branch is connected with an upper middle tap X2, and the other end of the voltage regulating branch is connected with a second input end T2 of the transition switching unit; the voltage regulating secondary branch is connected with an on-off switch K2 in series, one end of the voltage regulating secondary branch is connected with a middle tap X3, and the other end of the voltage regulating secondary branch is connected with a first input end T1 of the transition switching unit; the three voltage-regulating branches are connected with an on-off switch K3 in series, one end of each voltage-regulating branch is connected with the middle-lower tap X4, and the other end of each voltage-regulating branch is connected with the second input end T2 of the transition switching unit.
The combination state of the polarity switch Kj and each on-off switch corresponds to each gear of the voltage regulating circuit as follows:
a first linkage is shown in fig. 1-13: the upper linkage piece is simultaneously communicated with the first connecting pin and the second connecting pin, and the lower linkage piece is simultaneously communicated with the third connecting pin and the fourth connecting pin.
Fifth gear: ke is closed, K0 is opened, and L1, L2, L3 and L4 are not connected with a circuit, so that power is supplied by rated voltage;
a sixth gear: ke is open, K1 is closed, K0 is closed, and L1 is connected into the circuit;
seventh gear: ke is open, K2 is closed, K0 is open, and L1 and L2 are connected into the circuit;
eighth gear: ke is open, K3 is closed, K0 is closed, and L1, L2 and L3 are connected into the circuit;
nine gears: ke open, Km close, K0 open, L1, L2, L3, L4 are accessing the circuit;
a second linkage is shown in fig. 14-26: the upper linkage piece is simultaneously communicated with the second connecting pin and the third connecting pin, and the lower linkage piece is simultaneously communicated with the fourth connecting pin and the fifth connecting pin.
Fifth gear: ke is closed, K0 is opened, and L1, L2, L3 and L4 are not connected into a circuit, so that power is supplied by rated voltage;
fourth gear: ke is opened, K3 is closed, K0 is closed, and L4 is reversely connected into the circuit;
third gear: ke is opened, K2 is closed, K0 is closed, and L3 and L4 are reversely connected into the circuit;
second gear: ke is closed, K1 is closed, K0 is closed, and L2, L3 and L4 are reversely connected into a circuit;
first gear: ke is closed, Km is closed, K0 is opened, and L1, L2, L3 and L4 are reversely connected into the circuit;
the boosting principle is as follows:
when the gear is five, the upper linkage piece of the polarity switch Kj is simultaneously communicated with the first connecting pin and the second connecting pin, and the lower linkage piece is simultaneously communicated with the third connecting pin and the fourth connecting pin; at this time, the on-off switch Ke of the rated voltage branch is closed, the on-off switches of the voltage regulating branches are all opened, and the transition on-off switch K0 in the transition switching unit is also opened.
When the sixth gear is shifted up, in the first step, the on-off switch K1 in the closed voltage regulating branch is closed, the cut-off switch K0 of the transition switching unit is in an off state, at the moment, the rated voltage branch supplies power, and the transition resistor provides short-circuit protection; and then, the on-off switch Ke on the rated voltage branch is disconnected, the voltage regulating coil L1 is connected into the circuit, and in the third step, the on-off switch K0 in the transition switching unit is closed, so that the switching of the fifth gear and the sixth gear is completed.
When the sixth gear is shifted up to the seventh gear, in the first step, the on-off switch K0 in the transition switching unit is switched off, then the on-off switch K2 in the voltage regulating branch is switched on, at the moment, both K1 and K2 are switched on, the voltage regulating coil L1 is connected into the circuit, in the third step, the on-off switch K1 in the voltage regulating branch is switched off, and the voltage regulating coils L1 and L2 are connected into the circuit, so that the sixth gear is shifted up to the seventh gear.
When the seventh gear is shifted up to the eighth gear, the on-off switch K3 of the voltage regulating branch is closed in the first step, the on-off switches K2 and K3 are both closed at the moment, the voltage regulating coils L1 and L2 are connected into the circuit, the on-off switch K2 is opened in the second step, the voltage regulating coils L1, L2 and L3 are connected into the circuit at the moment, and the on-off switch K0 of the transition switching unit is closed in the third step, so that the switching of the seventh gear and the eighth gear is completed.
When the eight gear is shifted up to the ninth gear, the on-off switch K0 of the transition switching unit is turned off in the first step, the on-off switch Km in the pressure regulating branch is turned on in the second step, the on-off switches K0 and Km are turned on at the moment, the pressure regulating coils L1, L2 and L3 are connected into the circuit, the on-off switch K3 is turned off, and the pressure regulating coils L1, L2, L3 and L4 are connected into the circuit at the moment, so that the eight gear is shifted up to the ninth gear.
The pressure reduction principle is as follows:
when the gear is five, the polarity switch Kj is switched, so that the upper linkage piece is simultaneously communicated with the second connecting pin and the third connecting pin, and the lower linkage piece is simultaneously communicated with the fourth connecting pin and the fifth connecting pin; at this time, the on-off switch Ke of the rated voltage branch is closed, the on-off switches of the voltage regulating branches are all opened, the transition on-off switch K0 in the transition switching unit is also opened, and the rated voltage branch supplies power.
When the fourth gear is reduced, in the first step, the on-off switch K3 in the voltage-regulating branch is closed, the cut-off switch K0 of the transition switching unit is in an off state, at the moment, the on-off switches K3 and Ke are both closed, the transition resistor provides short-circuit protection, and the rated voltage branch supplies power; and then, the on-off switch Ke on the rated voltage branch is disconnected, the voltage regulating coil L4 is reversely connected into the circuit, and in the third step, the on-off switch K0 in the transition switching unit is closed, so that the switching of the fifth gear and the fourth gear is completed.
When the third gear is shifted down, the on-off switch K0 in the transition switching unit is turned off in the first step, then the on-off switch K2 in the voltage regulating branch is turned on, at the moment, K3 and K2 are both turned on, the voltage regulating coil L1 is reversely connected into the circuit, the on-off switch K3 in the voltage regulating branch is turned off, and the voltage regulating coils L4 and L3 are reversely connected into the circuit, so that the switching of the fourth gear and the third gear is completed.
When the second gear is shifted down, the on-off switch K1 of the voltage regulating branch is closed in the first step, at the moment, the on-off switches K2 and K1 are both closed, the voltage regulating coils L4 and L3 are reversely connected into the circuit, the on-off switch K2 is opened, at the moment, the voltage regulating coils L4, L3 and L2 are reversely connected into the circuit, and the on-off switch K0 of the transition switching unit is closed in the third step, so that the switching of the third gear and the second gear is completed.
When the first gear is reduced, the on-off switch K0 of the transition switching unit is switched off in the first step, the on-off switch Km in the voltage regulating branch is switched on in the second step, the on-off switches K0 and Km are switched on at the moment, the voltage regulating coils L4, L3 and L2 are reversely connected into the circuit, the on-off switch K1 is switched off in the third step, and the voltage regulating coils L1, L2, L3 and L4 are reversely connected into the circuit at the moment, so that the second gear is reduced and the first gear is switched.
The utility model discloses at whole nine grades of pressure regulating in-process, all have the rated voltage branch road or by the pressure regulating branch road of previous shelves for the power supply of next grade pressure regulating branch road, at whole pressure regulating in-process, remain the on-state throughout. In addition, nine grades of voltage regulating circuit, through polarity switch's double-linkage structure make it reduce 4 voltage regulating branch roads by prior art's 5 voltage regulating branch roads, reduced the joint quantity of coil, make its structure more simplify, more rationalize on the global design, moreover on the global space greatly reduced, cost greatly reduced, the also greatly reduced of technology degree of difficulty, it is more easy to process and design, the reduction of circuit still helps promoting its security.
The utility model discloses do not confine the above-mentioned embodiment to, the general technical personnel in this field can adopt other multiple embodiments to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope.
Claims (5)
1. The utility model provides a voltage regulating circuit of nine grades of transformers, including the voltage regulating circuit input, the voltage regulating circuit output, main winding, polarity change over switch, the voltage regulating winding, transition switching unit, rated voltage branch road and voltage regulating branch road, the voltage regulating circuit input is connected in tap to the main winding input, main winding output tap parallel connection polarity change over switch and rated voltage branch road, the input and the main winding output tap of rated voltage branch road are connected, the output and the input of transition switching unit of rated voltage branch road are connected, the transition switching unit includes the parallel circuit structure who is formed by transition resistance and transition on-off switch parallel connection, the first input and the second input of this parallel circuit structure are transition switching unit, the first input is the voltage regulating circuit output concurrently, its characterized in that: the polarity switch comprises 5 connecting pins and 2 linkage plates, wherein the 2 linkage plates are adjacently distributed and synchronously move to form 2 connecting structures which are respectively a positive voltage regulating branch connecting structure and a negative voltage regulating branch connecting structure, each linkage plate can simultaneously conduct the 2 corresponding connecting pins respectively, the 5 connecting pins are respectively a first connecting pin, a second connecting pin, a third connecting pin, a fourth connecting pin and a fifth connecting pin,
the voltage regulating branch comprises a voltage regulating first branch, a voltage regulating second branch, a voltage regulating third branch and a voltage regulating fourth branch,
the voltage regulating winding comprises four sections of voltage regulating coils wound in the same direction and 5 voltage regulating winding taps, namely a voltage regulating coil L1, a voltage regulating coil L2, a voltage regulating coil L3 and a voltage regulating coil L4; the 5 voltage regulating winding taps are respectively an upper end tap, a lower end tap, an upper middle tap, a lower middle tap and a middle tap,
the output end tap of the main winding is connected with the fourth connecting pin, the fifth connecting pin is connected with the lower end tap, the third connecting pin is connected with the upper end tap, the second connecting pin is connected with the voltage regulating branch, the first connecting pin is connected with the lower end tap, the middle upper connecting tap is connected with the voltage regulating two branch, the middle tap is connected with the voltage regulating three branch, and the middle lower connecting tap is connected with the voltage regulating four branch;
the four voltage-regulating branches are connected with an on-off switch Km in series, one end of each voltage-regulating branch is connected with the second connecting pin, and the other end of each voltage-regulating branch is connected with the first input end of the transition switching unit; the voltage regulating branch is connected with an on-off switch K1 in series, one end of the voltage regulating branch is connected with the upper-middle tap, and the other end of the voltage regulating branch is connected with a second input end of the transition switching unit; the voltage regulating secondary branch is connected with an on-off switch K2 in series, one end of the voltage regulating secondary branch is connected with the middle tap, and the other end of the voltage regulating secondary branch is connected with a first input end of the transition switching unit; the three voltage-regulating branches are connected with an on-off switch K3 in series, one end of each voltage-regulating branch is connected with the middle-lower tap, and the other end of each voltage-regulating branch is connected with the second input end of the transition switching unit.
2. The voltage regulating circuit of the nine-gear transformer according to claim 1, wherein: the 5 connecting pins of the polarity reversing switch are distributed at intervals along a straight line, the 2 linkage pieces are distributed adjacently up and down along the straight line where the 5 connecting pins are located, and the 2 linkage pieces are respectively an upper linkage piece and a lower linkage piece.
3. The voltage regulating circuit of the nine-gear transformer according to claim 2, wherein: the polarity reversing switch forms 2 connection relations along with the up-and-down sliding of the 2 linkage pieces, the first connection relation is that the upper linkage piece is simultaneously communicated with the first connecting pin and the second connecting pin, and the lower linkage piece is simultaneously communicated with the third connecting pin and the fourth connecting pin; the second connection relationship is that the upper linkage piece is simultaneously connected with the second and the third connection pins, and the lower linkage piece is simultaneously connected with the fourth and the fifth connection pins.
4. The voltage regulating circuit of the nine-gear transformer according to claim 1, wherein: and a transition on-off switch in the transition switching unit adopts a vacuum arc-extinguishing chamber.
5. The voltage regulating circuit of the nine-gear transformer according to claim 1, wherein the on-off switches connected in series on the voltage regulating branch and the rated voltage branch are vacuum arc-extinguishing chambers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022456680.1U CN213402869U (en) | 2020-10-29 | 2020-10-29 | Voltage regulating circuit of nine-gear transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022456680.1U CN213402869U (en) | 2020-10-29 | 2020-10-29 | Voltage regulating circuit of nine-gear transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213402869U true CN213402869U (en) | 2021-06-08 |
Family
ID=76191733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022456680.1U Active CN213402869U (en) | 2020-10-29 | 2020-10-29 | Voltage regulating circuit of nine-gear transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213402869U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113707441A (en) * | 2021-08-13 | 2021-11-26 | 国网河北省电力有限公司检修分公司 | Adjustable transformation ratio CT wiring terminal capable of preventing open circuit in uninterrupted state |
| CN114430247A (en) * | 2020-10-29 | 2022-05-03 | 浙江宝威电气有限公司 | Voltage regulating circuit of nine-gear transformer |
-
2020
- 2020-10-29 CN CN202022456680.1U patent/CN213402869U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114430247A (en) * | 2020-10-29 | 2022-05-03 | 浙江宝威电气有限公司 | Voltage regulating circuit of nine-gear transformer |
| CN113707441A (en) * | 2021-08-13 | 2021-11-26 | 国网河北省电力有限公司检修分公司 | Adjustable transformation ratio CT wiring terminal capable of preventing open circuit in uninterrupted state |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213402869U (en) | Voltage regulating circuit of nine-gear transformer | |
| CN108063043B (en) | Capacity-adjustable transformer | |
| CN103229413A (en) | Tap changer | |
| CN213402867U (en) | Voltage regulating circuit of five-gear transformer | |
| CN105513772B (en) | A kind of loaded capacity regulating voltage regulating distribution transformer | |
| CN206849669U (en) | A kind of dry-type on-load tap changer circuit | |
| CN110190788A (en) | A kind of staggered-parallel-type multi gear transformer on-load voltage regulating circuit with dipole inversion | |
| CN205195274U (en) | Do not have and shove, have single -phase pressuretrol of distribution lines that electric arc was shifted gears | |
| CN205508602U (en) | It holds pressure regulating distribution transformer to have to carry to transfer | |
| CN114430247A (en) | Voltage regulating circuit of nine-gear transformer | |
| CN210469151U (en) | Interleaved parallel seven-gear transformer on-load voltage regulation circuit with polarity conversion | |
| CN210469152U (en) | On-load voltage regulation circuit with polarity conversion for staggered parallel nine-gear transformer | |
| CN210091890U (en) | Nine-gear transformer on-load voltage regulation circuit with polarity conversion | |
| CN210536537U (en) | On-load voltage regulation circuit with polarity conversion for staggered parallel multi-gear transformer | |
| CN110198149B (en) | On-load voltage regulating circuit of staggered parallel type multi-gear transformer | |
| CN102136354B (en) | Large-range on-load tap changer (OLTC) for testing | |
| CN114430246A (en) | Voltage regulating circuit of five-gear transformer | |
| CN210297587U (en) | Five-gear transformer on-load voltage regulation circuit with polarity conversion | |
| CN106803675A (en) | Three-phase distribution circuit automatic regulating voltage method of the no-flashy-flow without electric arc gear shift | |
| CN110212829A (en) | A kind of nine grades of transformer on-load voltage regulating circuits of staggered-parallel-type with dipole inversion | |
| CN213402868U (en) | Five-pin polarity switch circuit for transformer voltage regulating circuit | |
| CN201465772U (en) | Structure of T-shaped wiring traction transformer | |
| CN110224645A (en) | A kind of nine with dipole inversion grade transformer on-load voltage regulating circuit | |
| CN213959975U (en) | Five-pin polarity switch special for voltage regulating switch of transformer | |
| CN101958186A (en) | 220,000-volt power transformer for switching and regulating voltages of different voltage classes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |