CN205178867U - High -power converter of high pressure and have electrical equipment of this converter - Google Patents

High -power converter of high pressure and have electrical equipment of this converter Download PDF

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Publication number
CN205178867U
CN205178867U CN201520742657.5U CN201520742657U CN205178867U CN 205178867 U CN205178867 U CN 205178867U CN 201520742657 U CN201520742657 U CN 201520742657U CN 205178867 U CN205178867 U CN 205178867U
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CN
China
Prior art keywords
resistance
soft
input
voltage
powers
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CN201520742657.5U
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Chinese (zh)
Inventor
彭丽巧
褚立峰
张大为
彭丽敏
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北京动力源科技股份有限公司
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Priority to CN201520742657.5U priority Critical patent/CN205178867U/en
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Publication of CN205178867U publication Critical patent/CN205178867U/en

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Abstract

The utility model discloses a high -power converter of high pressure and have electrical equipment of this converter. Wherein, the high -power converter of high pressure includes: soft electric high -voltage compartment and the soft electric low -pressure section of going up of, softly electric high -voltage compartment, according to the last electric type of frequency conversion system, through the high -pressure contactor of PLC control deciliter, realization high voltage loop circuit break -make, so that soft electric low -pressure section according to control system's instruction, realizes the perhaps high -pressure soft electric work ability that goes up of the soft upward electric work of low pressure, it is in high -pressure upward electricity or the low pressure to go up electric type. The utility model discloses technical scheme has realized high -pressure high -power converter and has exempted from high pressure empty load, wave form, failure test through adopting low pressure resistance to realize the design of the soft upward electricity of high pressure in grades, has shortened the field commissionning cycle, multiplexing low pressure device group realizes the hierarchical soft electric work ability that goes up of high -pressure high -power converter high pressure, reduces current rush, and the lowering system cost reduces system's volume.

Description

A kind of high-voltage high-power frequency transformator and there is the electric equipment of this frequency converter
Technical field
The utility model relates to electric and electronic technical field, particularly a kind of high-voltage high-power frequency transformator and have the electric equipment of this frequency converter.
Background technology
Along with scientific technological advance, wall scroll production line daily output fast lifting, the capacity of the high-voltage motor configured is increasing, and the capacity of frequency converter supporting is with it also increasing.The application of jumbo phase shifting transformer and a large amount of electrochemical capacitor, make high voltage converter powered on moment electric current up to 5-10 times of Rated motor electric current, super motor normal operating current far away, significantly increases higher level's supply transformer, supply line's capacity and user side high voltage source incoming line cabinet and to power on trip risk.In prior art, tandem type high voltage converter is formed primarily of control system, power system, transformation phase-shift system, bypath system four part.The power unit module of voltage-type tandem type high voltage frequency converter power system adopts a large amount of electrochemical capacitor connection in series-parallel to realize DC filtering function.
Existing frequency converter powers on and generally adopts circuit as shown in Figure 1, adds joined the soft part that powers on of the high pressure be made up of high voltage connector KM1 and 3 high-power high voltage resistance R1/2/3 in the frequency converter front end that powers on.On high voltage converter before high pressure, first open high pressure QS12, QS22 disconnecting link, KM1 contactor, closed high QS11, QS21 disconnecting link, high-tension resistive accesses the loop that powers on.Closed user end high voltage source lead-in circuit breaker QF1 (combined floodgate impulse current 2-5 doubly), power supply after high-tension resistive R1/2/3 dividing potential drop current limliting for frequency converter powers on.After high pressure QF1 is closed, PLC starts timing, and timing time arrives, and closed high KM1 contactor is by high-tension resistive short circuit (short circuit impulse current 2-5 doubly), and the soft end that powers on, electrical network is high voltage converter normal power supply.Adopt this power system, when QF1 close a floodgate moment, KM1 combined floodgate moment impact electric current is large; And in frequency converter running, high-tension resistive R1/2/3 is charged all the time, easily damages and be not easy to safeguard; Be exactly adopt described high-power resistance R1/2/3 cost high in addition, size is large, is not easy to patching operations.
But, for increasing system reliability in prior art, circuit as shown in Figure 2 can also be adopted, namely add based on above circuit structure and join high voltage connector KM2, KM3.On frequency conversion system before high pressure, first open high pressure QS12, QS22 disconnecting link, KM1 contactor, closed high QS11, QS21 disconnecting link, KM2, KM3 contactor, high-tension resistive R1/2/3 accesses the loop that powers on.Closed high user side high voltage source incoming line cabinet QF1, power supply after high-pressure vacuum contactor KM2, KM3, high-tension resistive R1/2/3 dividing potential drop current limliting for frequency converter powers on.After high pressure QF1 is closed, PLC starts timing, and timing time arrives, and closes KM1 contactor by high-tension resistive short circuit, the soft end that powers on, the normal high voltage supply of high voltage converter.Disconnect high pressure KM2, KM3 contactor, high-tension resistive R1/2/3 and electric loop are disconnected.
But inventor finds that in prior art, at least also there are the following problems in the process adopting this circuit:
In prior art, QF1 closes a floodgate moment, KM1 combined floodgate moment impact electric current still comparatively greatly, and control logic is complicated, easily causes misoperation, is exactly in addition to adopt this circuit high tension apparatus many, is not easy to wiring, space availability ratio is low.
Utility model content
In view of the above problems, the utility model is proposed to provide a kind of overcoming the problems referred to above or a kind of high-voltage high-power frequency transformator solved the problem at least in part and the electric equipment with this frequency converter.
According to an aspect of the present utility model, the utility model provides a kind of high-voltage high-power frequency transformator, and this high-voltage high-power frequency transformator comprises: soft high-pressure section and the soft low-pressure section that powers on of powering on;
The described soft high-pressure section that powers on, according to the type that powers on of frequency conversion system, controls high voltage connector deciliter by PLC, realize high tension loop break-make, so that the described soft low-pressure section that powers on, according to the instruction of control system, realize the soft upper Electricity Functional of low pressure or the soft upper Electricity Functional of high pressure;
The described type that powers on is that high pressure powers on or low pressure powers on.
Wherein, the described soft low-pressure section that powers on comprises: the soft function selecting module that powers on, input voltage measurement module, soft upper electric control low-voltage module;
The described soft function selecting module that powers on, for selecting whether enter soft power up mode, if enter soft power up mode, then starts described input voltage measurement module;
Described input voltage measurement module, for detecting the tertiary winding voltage of phase shifting transformer, and by the voltage transmission that detects to controller;
Described soft upper electric control low-voltage module, for the voltage swing detected according to described input voltage measurement module, and the instruction of described controller, carry out corresponding operating.
Wherein, described input voltage measurement module comprises: the first input voltage measurement branch road, the second input voltage measurement branch road, the 3rd input voltage measurement branch road;
Described first input voltage measurement branch road comprises: the 11 resistance, the 12 resistance, the first transformer, the first amplifier, the 11 electric capacity, the 12 electric capacity, the 14 resistance and the 15 resistance;
A phase voltage input described in described 11 resistance one termination, the 12 resistance one end described in another termination;
First transformer input 1 of the same name described in described 12 another termination of resistance;
Described first transformer output of the same name 3 connects described first amplifier positive input, another input 2 of described first transformer connects power input terminal, and another output 4 of described first transformer connects described first amplifier negative input and described 14 resistance link;
Described first amplifier exports the 15 resistance and described 14 resistance link described in termination;
Another termination controller voltage sample input of described 15 resistance;
Described 12 resistance one end ground connection, the first amplifier forward power end described in another termination;
Described 11 resistance one end ground connection, the first amplifier negative sense power end described in another termination;
Described second input voltage measurement branch road comprises: the 21 resistance, the 22 resistance, the second transformer, the second amplifier, the 21 electric capacity, the 22 electric capacity, the 24 resistance and the 25 resistance;
B phase voltage input described in described 21 resistance one termination, the 22 resistance one end described in another termination;
Second transformer input 1 of the same name described in described 22 another termination of resistance;
Described second transformer output of the same name 3 connects described second amplifier positive input, another input 2 of described second transformer connects power input terminal, and another output 4 of described second transformer connects described second amplifier negative input and described 24 resistance link;
Described second amplifier exports the 25 resistance and described 24 resistance link described in termination;
Another termination controller voltage sample input of described 25 resistance;
Described 22 resistance one end ground connection, the second amplifier forward power end described in another termination;
Described 21 resistance one end ground connection, the second amplifier negative sense power end described in another termination;
Described 3rd input voltage measurement branch road comprises: the 31 resistance, the 32 resistance, the 3rd transformer, the 3rd amplifier, the 31 electric capacity, the 32 electric capacity, the 34 resistance and the 35 resistance;
C phase voltage input described in described 31 resistance one termination, the 32 resistance one end described in another termination;
3rd transformer input 1 of the same name described in described 32 another termination of resistance;
Described 3rd transformer output of the same name 3 connects described 3rd amplifier positive input, described another input 2 of 3rd transformer connects power input terminal, and described another output 4 of 3rd transformer connects described 3rd amplifier negative input and described 34 resistance link;
Described 3rd amplifier exports the 35 resistance and described 34 resistance link described in termination;
Another termination controller voltage sample input of described 35 resistance;
Described 32 resistance one end ground connection, the 3rd amplifier forward power end described in another termination;
Described 31 resistance one end ground connection, the 3rd amplifier negative sense power end described in another termination.
Wherein, described soft upper electric control low-voltage module comprises: the soft resistor group one that powers on of low pressure, the soft resistor group two that powers on of low pressure, the 4th contactor and the 5th contactor;
After the soft resistor group one that powers on of described low pressure is connected in parallel with described 4th contactor, one end is connected with described controller, the soft function selecting module that powers on described in another termination;
After the soft resistor group two that powers on of described low pressure is connected in parallel with described 5th contactor, one end is connected with described controller, the soft function selecting module that powers on of another termination.
Wherein, the described soft high-pressure section that powers on comprises: a soft upper electric control high voltage connector; Described soft upper electric control high voltage connector one end is connected with high voltage source bus by high-voltage switch gear, and the other end is connected with three-phase alternating current by high-voltage switch gear.
According to another aspect of the present utility model, the utility model provides a kind of electric equipment, and this electric equipment comprises: high-voltage high-power frequency transformator; Described high-voltage high-power frequency transformator comprises: soft high-pressure section and the soft low-pressure section that powers on of powering on;
The described soft high-pressure section that powers on, according to the type that powers on of frequency conversion system, by a soft upper electric control high voltage connector, control realization high tension loop is communicated with, so that the described soft low-pressure section that powers on, according to the instruction of control system, realize the soft upper Electricity Functional of low pressure or the soft upper Electricity Functional of high pressure;
The described type that powers on is that high pressure powers on or low pressure powers on.
Wherein, the described soft low-pressure section that powers on comprises: the soft function selecting module that powers on, input voltage measurement module, soft upper electric control low-voltage module;
The described soft function selecting module that powers on, for selecting whether enter soft power up mode, if enter soft power up mode, then starts described input voltage measurement module;
Described input voltage measurement module, for detecting the tertiary winding voltage of phase shifting transformer, and by the voltage transmission that detects to controller;
Described soft upper electric control low-voltage module, for the voltage swing detected according to described input voltage measurement module, and the instruction of described controller, carry out corresponding operating.
Wherein, described input voltage measurement module comprises: the first input voltage measurement branch road, the second input voltage measurement branch road, the 3rd input voltage measurement branch road;
Described first input voltage measurement branch road comprises: the 11 resistance, the 12 resistance, the first transformer, the first amplifier, the 11 electric capacity, the 12 electric capacity, the 14 resistance and the 15 resistance;
A phase voltage input described in described 11 resistance one termination, the 12 resistance one end described in another termination;
First transformer input 1 of the same name described in described 12 another termination of resistance;
Described first transformer output of the same name 3 connects described first amplifier positive input, another input 2 of described first transformer connects power input terminal, and another output 4 of described first transformer connects described first amplifier negative input and described 14 resistance link;
Described first amplifier exports the 15 resistance and described 14 resistance link described in termination;
Another termination controller voltage sample input of described 15 resistance;
Described 12 resistance one end ground connection, the first amplifier forward power end described in another termination;
Described 11 resistance one end ground connection, the first amplifier negative sense power end described in another termination;
Described second input voltage measurement branch road comprises: the 21 resistance, the 22 resistance, the second transformer, the second amplifier, the 21 electric capacity, the 22 electric capacity, the 24 resistance and the 25 resistance;
B phase voltage input described in described 21 resistance one termination, the 22 resistance one end described in another termination;
Second transformer input 1 of the same name described in described 22 another termination of resistance;
Described second transformer output of the same name 3 connects described second amplifier positive input, another input 2 of described second transformer connects power input terminal, and another output 4 of described second transformer connects described second amplifier negative input and described 24 resistance link;
Described second amplifier exports the 25 resistance and described 24 resistance link described in termination;
Another termination controller voltage sample input of described 25 resistance;
Described 22 resistance one end ground connection, the second amplifier forward power end described in another termination;
Described 21 resistance one end ground connection, the second amplifier negative sense power end described in another termination;
Described 3rd input voltage measurement branch road comprises: the 31 resistance, the 32 resistance, the 3rd transformer, the 3rd amplifier, the 31 electric capacity, the 32 electric capacity, the 34 resistance and the 35 resistance;
C phase voltage input described in described 31 resistance one termination, the 32 resistance one end described in another termination;
3rd transformer input 1 of the same name described in described 32 another termination of resistance;
Described 3rd transformer output of the same name 3 connects described 3rd amplifier positive input, described another input 2 of 3rd transformer connects power input terminal, and described another output 4 of 3rd transformer connects described 3rd amplifier negative input and described 34 resistance link;
Described 3rd amplifier exports the 35 resistance and described 34 resistance link described in termination;
Another termination controller voltage sample input of described 35 resistance;
Described 32 resistance one end ground connection, the 3rd amplifier forward power end described in another termination;
Described 31 resistance one end ground connection, the 3rd amplifier negative sense power end described in another termination.
Wherein, described soft upper electric control low-voltage module comprises: the soft resistor group one that powers on of low pressure, the soft resistor group two that powers on of low pressure, the 4th contactor and the 5th contactor;
After the soft resistor group one that powers on of described low pressure is connected in parallel with described 4th contactor, one end is connected with described controller, the soft function selecting module that powers on described in another termination;
After the soft resistor group two that powers on of described low pressure is connected in parallel with described 5th contactor, one end is connected with described controller, the soft function selecting module that powers on of another termination.
Wherein, the described soft high-pressure section that powers on comprises: a soft upper electric control high voltage connector; Described soft upper electric control high voltage connector one end is connected with high voltage source bus by high-voltage switch gear, and the other end is connected with three-phase alternating current by high-voltage switch gear.
The beneficial effects of the utility model are: by adopting low resistance classification to realize the soft design that powers on of high pressure, achieving high-voltage high-power frequency transformator and exempting from high pressure zero load, waveform, fault test, shorten the field adjustable cycle; Multiplexing low-voltage device group, realizes the soft upper Electricity Functional of high-voltage high-power frequency transformator high pressure classification, reduces rush of current, reduces system cost, reduction system volume.
Accompanying drawing explanation
Fig. 1 is the soft system configuration schematic diagram that powers on of a kind of high voltage converter in prior art;
Fig. 2 is the soft system configuration schematic diagram that powers on of another kind of high voltage converter in prior art;
Fig. 3 is a kind of high-voltage high-power frequency transformator electrical block diagram that the utility model provides;
Fig. 4 is the soft high-pressure section structural representation that powers on of a kind of high-voltage high-power frequency transformator that the utility model provides;
Fig. 5 is the soft low-pressure section structural representation that powers on of a kind of high-voltage high-power frequency transformator that the utility model provides;
Fig. 6 is the soft control interface schematic diagram that powers on of a kind of high-voltage high-power frequency transformator that the utility model provides;
Fig. 7 is the input voltage measurement module circuit diagram of the soft low-pressure section that powers on of a kind of high-voltage high-power frequency transformator that the utility model provides;
Fig. 8 is a kind of electric equipment structural representation that the utility model provides.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model execution mode is described in further detail.
The high-power mentioned in the utility model patent refers to more than 2000kW; The high pressure mentioned refers to more than 1000V but is no more than 35kV; The low pressure mentioned refers to 380V.
A kind of high-voltage high-power frequency transformator electrical block diagram that Fig. 3 provides for the utility model; This high-voltage high-power frequency transformator comprises: soft high-pressure section 301 and the soft low-pressure section 302 that powers on of powering on;
The described soft high-pressure section that powers on, according to the type that powers on of frequency conversion system, controls high voltage connector deciliter by PLC, realize high tension loop break-make, so that the described soft low-pressure section that powers on, according to the instruction of control system, realize the soft upper Electricity Functional of low pressure or the soft upper Electricity Functional of high pressure;
The described type that powers on is that high pressure powers on or low pressure powers on
Wherein, the described soft low-pressure section that powers on comprises: the soft function selecting module that powers on, input voltage measurement module, soft upper electric control low-voltage module;
The described soft function selecting module that powers on, for selecting whether enter soft power up mode, if enter soft power up mode, then starts described input voltage measurement module;
Described input voltage measurement module, for detecting the tertiary winding voltage of phase shifting transformer, and by the voltage transmission that detects to controller;
Described soft upper electric control low-voltage module, for the voltage swing detected according to described input voltage measurement module, and the instruction of described controller, carry out corresponding operating.
Based on above embodiment, below by way of the operation principle of high-voltage high-power frequency transformator, the present invention is described in detail.
As shown in Figure 4, the soft high-pressure section structural representation that powers on of a kind of high-voltage high-power frequency transformator provided for the utility model embodiment;
As shown in Figure 5, the soft low-pressure section structural representation that powers on of a kind of high-voltage high-power frequency transformator provided for the utility model embodiment;
As shown in Figure 7, the input voltage measurement module circuit diagram of the soft low-pressure section that powers on of the high-voltage high-power frequency transformator provided for the utility model embodiment;
The soft of high-voltage high-power frequency transformator as shown in Figure 4 powers on high-pressure section compared with prior art, removes the high-tension resistive R1/2/3 in prior art, KM2, KM3 contactor, is only preserved for the high voltage connector KM1 that control realization high tension loop is communicated with.
It should be noted that, the device in Fig. 1/Fig. 2/Fig. 4 is high tension apparatus, and the device in Fig. 5 is low-voltage device.
The soft low-pressure section that powers on of high-voltage high-power frequency transformator as shown in Figure 5, this part comprises: the soft function selecting module that powers on, input voltage measurement module (as shown in Figure 7), soft upper electric control low-voltage module;
When described high-voltage high-power frequency transformator realizes the soft upper Electricity Functional of low pressure, the soft of high-voltage high-power frequency transformator powers on high-pressure section as shown in Figure 4, needs on frequency conversion system before low pressure, disconnects high pressure QS11, QS21 disconnecting link, high pressure KM1 contactor, closed high QS12, QS22 disconnecting link.
The soft of high-voltage high-power frequency transformator powers on low-pressure section as shown in Figure 5, closed low QF11, QF12 switch, KM11 contactor, control cubicle is powered and is selected the first via to power (namely, from user AC380V), after control system is ready, the soft of high-voltage high-power frequency transformator powers on control interface as shown in Figure 6, press the soft select button S11 that powers on, the normally closed disconnection of low pressure K11, forbids that controlling tangential second tunnel of power supply controls electricity (that is, from phase shifting transformer), low pressure K11 is often made war closed, allows soft upper electric control (low pressure) part to drop into.Closed low QF16 switch, (that is, the soft resistor group one that powers on of low pressure is for R11/12/13 for the soft resistor group that powers on of low pressure, the soft resistor group two that powers on of low pressure is for R14/15/16) drop into, the phase shifting transformer tertiary winding obtains electric, through the reverse boosting of phase shifting transformer, for power cell powers on.Input voltage measurement module as shown in Figure 7, detect phase shifting transformer tertiary winding voltage, and by described voltage transmission to controller, when phase shifting transformer primary side voltage is close to phase voltage (35% ± 5V), closed low KM14 contactor, excision first order low pressure R11/12/13 resistance.Controller continues to detect phase shifting transformer primary side voltage, when voltage is close to phase voltage (70% ± 5V), and closed low KM15 contactor, excision second level low pressure R14/15/16 resistance, the soft end that powers on of high-voltage frequency converter low voltage.After unit DC bus-bar voltage is stable, can the test jobs such as frequency converter zero load, waveform, fault be carried out, avoid scene cannot carry out the work because high voltage supply is not ready.
When described high-voltage high-power frequency transformator realizes the soft upper Electricity Functional of high pressure, the soft high-pressure section that powers on of described high voltage converter, on frequency conversion system before high pressure, disconnects high pressure QS12, QS22 disconnecting link, high pressure KM1 contactor, closed high QS11, QS21 disconnecting link as shown in Figure 4.
Described high voltage converter is soft powers on low-pressure section as shown in Figure 5, closed low QF11, QF12 switch, KM11 contactor, control cubicle is powered and is selected the first via to power (namely, from user AC380V), after control system is ready, the soft of high-voltage high-power frequency transformator powers on control interface as shown in Figure 6, close the soft selector switch S11 that powers on, the normally closed disconnection of low pressure K11, forbids that controlling tangential second tunnel of power supply controls electricity (that is, from phase shifting transformer), low pressure K11 is often made war closed, allows soft upper electric control (low pressure) part to drop into.Closed low QF16 switch, (that is, the soft resistor group one that powers on of low pressure is for R11/12/13 for the soft resistor group that powers on of low pressure, the soft resistor group two that powers on of low pressure is for R14/15/16) drop into, the phase shifting transformer tertiary winding obtains electric, through the reverse boosting of phase shifting transformer, for power cell powers on.Input voltage measurement module as shown in Figure 7, detect phase shifting transformer tertiary winding voltage and send into controller, when phase shifting transformer primary side voltage is close to phase voltage (35% ± 5V), closed low KM14 contactor, excision first order low pressure R11/12/13 resistance/.Controller continues to detect phase shifting transformer primary side voltage, when voltage is close to phase voltage (70% ± 5V), and closed low KM15 contactor, excision second level low pressure R14/15/16 resistance.After unit DC bus-bar voltage is stable, disconnect low pressure KM15 contactor, time delay 0.5s closes (Fig. 4) high pressure KM1 contactor, and frequency converter is powered by high voltage bus, and frequency conversion system powers on end, time delay 1min disconnects the soft selector switch that powers on, System recover state to be launched, the normally closed point of low pressure K11 closes, and allows to control tangential second tunnel of power supply and controls electricity, low pressure K11 is often made war disconnection, forbids that soft upper electric control (low pressure) part drops into.
Technical solutions of the utility model are with system bypass; namely manual one-to-one switching mode is example; realize the soft design that powers on of the multiplexing fusion of high-voltage high-power frequency transformator high-low voltage device; the modes such as the automatic one-to-one, changing system bypass drags many, many holders many; and to adopt low-voltage device to realize low/and the compatible or soft upper Electricity Functional of high pressure of high pressure, all among the protection range of technical solutions of the utility model.
As shown in Figure 8, be a kind of electric equipment structural representation that the utility model provides; Described electric equipment comprises: high-voltage high-power frequency transformator; Described high-voltage high-power frequency transformator comprises: soft high-pressure section and the soft low-pressure section that powers on of powering on;
The described soft high-pressure section that powers on, according to the type that powers on of frequency conversion system, by a soft upper electric control high voltage connector, control realization high tension loop is communicated with, so that the described soft low-pressure section that powers on, according to the instruction of control system, realize the soft upper Electricity Functional of low pressure or the soft upper Electricity Functional of high pressure;
The described type that powers on is that high pressure powers on or low pressure powers on.
Wherein, the described soft low-pressure section that powers on comprises: the soft function selecting module that powers on, input voltage measurement module, soft upper electric control low-voltage module;
The described soft function selecting module that powers on, for selecting whether enter soft power up mode, if enter soft power up mode, then starts described input voltage measurement module;
Described input voltage measurement module, for detecting the tertiary winding voltage of phase shifting transformer, and by the voltage transmission that detects to controller;
Described soft upper electric control low-voltage module, for the voltage swing detected according to described input voltage measurement module, and the instruction of described controller, carry out corresponding operating.
Wherein, described input voltage measurement module comprises: the first input voltage measurement branch road, the second input voltage measurement branch road, the 3rd input voltage measurement branch road;
Described first input voltage measurement branch road comprises: the 11 resistance, the 12 resistance, the first transformer, the first amplifier, the 11 electric capacity, the 12 electric capacity, the 14 resistance and the 15 resistance;
A phase voltage input described in described 11 resistance one termination, the 12 resistance one end described in another termination;
First transformer input 1 of the same name described in described 12 another termination of resistance;
Described first transformer output of the same name 3 connects described first amplifier positive input, another input 2 of described first transformer connects power input terminal, and another output 4 of described first transformer connects described first amplifier negative input and described 14 resistance link;
Described first amplifier exports the 15 resistance and described 14 resistance link described in termination;
Another termination controller voltage sample input of described 15 resistance;
Described 12 resistance one end ground connection, the first amplifier forward power end described in another termination;
Described 11 resistance one end ground connection, the first amplifier negative sense power end described in another termination;
Described second input voltage measurement branch road comprises: the 21 resistance, the 22 resistance, the second transformer, the second amplifier, the 21 electric capacity, the 22 electric capacity, the 24 resistance and the 25 resistance;
B phase voltage input described in described 21 resistance one termination, the 22 resistance one end described in another termination;
Second transformer input 1 of the same name described in described 22 another termination of resistance;
Described second transformer output of the same name 3 connects described second amplifier positive input, another input 2 of described second transformer connects power input terminal, and another output 4 of described second transformer connects described second amplifier negative input and described 24 resistance link;
Described second amplifier exports the 25 resistance and described 24 resistance link described in termination;
Another termination controller voltage sample input of described 25 resistance;
Described 22 resistance one end ground connection, the second amplifier forward power end described in another termination;
Described 21 resistance one end ground connection, the second amplifier negative sense power end described in another termination;
Described 3rd input voltage measurement branch road comprises: the 31 resistance, the 32 resistance, the 3rd transformer, the 3rd amplifier, the 31 electric capacity, the 32 electric capacity, the 34 resistance and the 35 resistance;
C phase voltage input described in described 31 resistance one termination, the 32 resistance one end described in another termination;
3rd transformer input 1 of the same name described in described 32 another termination of resistance;
Described 3rd transformer output of the same name 3 connects described 3rd amplifier positive input, described another input 2 of 3rd transformer connects power input terminal, and described another output 4 of 3rd transformer connects described 3rd amplifier negative input and described 34 resistance link;
Described 3rd amplifier exports the 35 resistance and described 34 resistance link described in termination;
Another termination controller voltage sample input of described 35 resistance;
Described 32 resistance one end ground connection, the 3rd amplifier forward power end described in another termination;
Described 31 resistance one end ground connection, the 3rd amplifier negative sense power end described in another termination.
Wherein, described soft upper electric control low-voltage module comprises: the soft resistor group one that powers on of low pressure, the soft resistor group two that powers on of low pressure, the 4th contactor and the 5th contactor;
After the soft resistor group one that powers on of described low pressure is connected in parallel with described 4th contactor, one end is connected with described controller, the soft function selecting module that powers on described in another termination;
After the soft resistor group two that powers on of described low pressure is connected in parallel with described 5th contactor, one end is connected with described controller, the soft function selecting module that powers on of another termination.
Wherein, the described soft high-pressure section that powers on comprises: a soft upper electric control high voltage connector; Described soft upper electric control high voltage connector one end is connected with high voltage source bus by high-voltage switch gear, and the other end is connected with three-phase alternating current by high-voltage switch gear.
The beneficial effects of the utility model are: by adopting low resistance classification to realize the soft design that powers on of high pressure, achieving high-voltage high-power frequency transformator and exempting from high pressure zero load, waveform, fault test, shorten the field adjustable cycle; Multiplexing low-voltage device group, realizes the soft upper Electricity Functional of high-voltage high-power frequency transformator high pressure classification, reduces rush of current, reduces system cost, reduction system volume.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection range of the present utility model.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., be all included in protection range of the present utility model.

Claims (10)

1. a high-voltage high-power frequency transformator, is characterized in that, comprising: soft high-pressure section and the soft low-pressure section that powers on of powering on;
The described soft high-pressure section that powers on, according to the type that powers on of frequency conversion system, controls high voltage connector deciliter by PLC, realize high tension loop break-make, so that the described soft low-pressure section that powers on, according to the instruction of control system, realize the soft upper Electricity Functional of low pressure or the soft upper Electricity Functional of high pressure;
The described type that powers on is that high pressure powers on or low pressure powers on.
2. high-voltage high-power frequency transformator as claimed in claim 1, it is characterized in that, the described soft low-pressure section that powers on comprises: the soft function selecting module that powers on, input voltage measurement module, soft upper electric control low-voltage module;
The described soft function selecting module that powers on, for selecting whether enter soft power up mode, if enter soft power up mode, then starts described input voltage measurement module;
Described input voltage measurement module, for detecting the tertiary winding voltage of phase shifting transformer, and by the voltage transmission that detects to controller;
Described soft upper electric control low-voltage module, for the voltage swing detected according to described input voltage measurement module, and the instruction of described controller, carry out corresponding operating.
3. high-voltage high-power frequency transformator as claimed in claim 2, it is characterized in that, described input voltage measurement module comprises: the first input voltage measurement branch road, the second input voltage measurement branch road, the 3rd input voltage measurement branch road;
Described first input voltage measurement branch road comprises: the 11 resistance, the 12 resistance, the first transformer, the first amplifier, the 11 electric capacity, the 12 electric capacity, the 14 resistance and the 15 resistance;
Described 11 resistance one termination A phase voltage input, the 12 resistance one end described in another termination;
First transformer input 1 of the same name described in described 12 another termination of resistance;
Described first transformer output of the same name 3 connects described first amplifier positive input, another input 2 of described first transformer connects power input terminal, and another output 4 of described first transformer connects described first amplifier negative input and described 14 resistance link;
Described first amplifier exports the 15 resistance and described 14 resistance link described in termination;
Another termination controller voltage sample input of described 15 resistance;
Described 12 resistance one end ground connection, the first amplifier forward power end described in another termination;
Described 11 resistance one end ground connection, the first amplifier negative sense power end described in another termination;
Described second input voltage measurement branch road comprises: the 21 resistance, the 22 resistance, the second transformer, the second amplifier, the 21 electric capacity, the 22 electric capacity, the 24 resistance and the 25 resistance;
Described 21 resistance one termination B phase voltage input, the 22 resistance one end described in another termination;
Second transformer input 1 of the same name described in described 22 another termination of resistance;
Described second transformer output of the same name 3 connects described second amplifier positive input, another input 2 of described second transformer connects power input terminal, and another output 4 of described second transformer connects described second amplifier negative input and described 24 resistance link;
Described second amplifier exports the 25 resistance and described 24 resistance link described in termination;
Another termination controller voltage sample input of described 25 resistance;
Described 22 resistance one end ground connection, the second amplifier forward power end described in another termination;
Described 21 resistance one end ground connection, the second amplifier negative sense power end described in another termination;
Described 3rd input voltage measurement branch road comprises: the 31 resistance, the 32 resistance, the 3rd transformer, the 3rd amplifier, the 31 electric capacity, the 32 electric capacity, the 34 resistance and the 35 resistance;
Described 31 resistance one termination C phase voltage input, the 32 resistance one end described in another termination;
3rd transformer input 1 of the same name described in described 32 another termination of resistance;
Described 3rd transformer output of the same name 3 connects described 3rd amplifier positive input, described another input 2 of 3rd transformer connects power input terminal, and described another output 4 of 3rd transformer connects described 3rd amplifier negative input and described 34 resistance link;
Described 3rd amplifier exports the 35 resistance and described 34 resistance link described in termination;
Another termination controller voltage sample input of described 35 resistance;
Described 32 resistance one end ground connection, the 3rd amplifier forward power end described in another termination;
Described 31 resistance one end ground connection, the 3rd amplifier negative sense power end described in another termination.
4. high-voltage high-power frequency transformator as claimed in claim 3, it is characterized in that, described soft upper electric control low-voltage module comprises: the soft resistor group one that powers on of low pressure, the soft resistor group two that powers on of low pressure, the 4th contactor and the 5th contactor;
After the soft resistor group one that powers on of described low pressure is connected in parallel with described 4th contactor, one end is connected with described controller, the soft function selecting module that powers on described in another termination;
After the soft resistor group two that powers on of described low pressure is connected in parallel with described 5th contactor, one end is connected with described controller, the soft function selecting module that powers on of another termination.
5. as the high-voltage high-power frequency transformator in claim 2-4 as described in any one, it is characterized in that, the described soft high-pressure section that powers on comprises: a soft upper electric control high voltage connector; Described soft upper electric control high voltage connector one end is connected with high voltage source bus by high-voltage switch gear, and the other end is connected with three-phase alternating current by high-voltage switch gear.
6. an electric equipment, is characterized in that, comprising: high-voltage high-power frequency transformator; Described high-voltage high-power frequency transformator comprises: soft high-pressure section and the soft low-pressure section that powers on of powering on;
The described soft high-pressure section that powers on, according to the type that powers on of frequency conversion system, controls high voltage connector deciliter by PLC, realize high tension loop break-make, so that the described soft low-pressure section that powers on, according to the instruction of control system, realize the soft upper Electricity Functional of low pressure or the soft upper Electricity Functional of high pressure;
The described type that powers on is that high pressure powers on or low pressure powers on.
7. electric equipment as claimed in claim 6, it is characterized in that, the described soft low-pressure section that powers on comprises: the soft function selecting module that powers on, input voltage measurement module, soft upper electric control low-voltage module;
The described soft function selecting module that powers on, for selecting whether enter soft power up mode, if enter soft power up mode, then starts described input voltage measurement module;
Described input voltage measurement module, for detecting the tertiary winding voltage of phase shifting transformer, and by the voltage transmission that detects to controller;
Described soft upper electric control low-voltage module, for the voltage swing detected according to described input voltage measurement module, and the instruction of described controller, carry out corresponding operating.
8. electric equipment as claimed in claim 7, it is characterized in that, described input voltage measurement module comprises: the first input voltage measurement branch road, the second input voltage measurement branch road, the 3rd input voltage measurement branch road;
Described first input voltage measurement branch road comprises: the 11 resistance, the 12 resistance, the first transformer, the first amplifier, the 11 electric capacity, the 12 electric capacity, the 14 resistance and the 15 resistance;
Described 11 resistance one termination A phase voltage input, the 12 resistance one end described in another termination;
First transformer input 1 of the same name described in described 12 another termination of resistance;
Described first transformer output of the same name 3 connects described first amplifier positive input, another input 2 of described first transformer connects power input terminal, and another output 4 of described first transformer connects described first amplifier negative input and described 14 resistance link;
Described first amplifier exports the 15 resistance and described 14 resistance link described in termination;
Another termination controller voltage sample input of described 15 resistance;
Described 12 resistance one end ground connection, the first amplifier forward power end described in another termination;
Described 11 resistance one end ground connection, the first amplifier negative sense power end described in another termination;
Described second input voltage measurement branch road comprises: the 21 resistance, the 22 resistance, the second transformer, the second amplifier, the 21 electric capacity, the 22 electric capacity, the 24 resistance and the 25 resistance;
Described 21 resistance one termination B phase voltage input, the 22 resistance one end described in another termination;
Second transformer input 1 of the same name described in described 22 another termination of resistance;
Described second transformer output of the same name 3 connects described second amplifier positive input, another input 2 of described second transformer connects power input terminal, and another output 4 of described second transformer connects described second amplifier negative input and described 24 resistance link;
Described second amplifier exports the 25 resistance and described 24 resistance link described in termination;
Another termination controller voltage sample input of described 25 resistance;
Described 22 resistance one end ground connection, the second amplifier forward power end described in another termination;
Described 21 resistance one end ground connection, the second amplifier negative sense power end described in another termination;
Described 3rd input voltage measurement branch road comprises: the 31 resistance, the 32 resistance, the 3rd transformer, the 3rd amplifier, the 31 electric capacity, the 32 electric capacity, the 34 resistance and the 35 resistance;
Described 31 resistance one termination C phase voltage input, the 32 resistance one end described in another termination;
3rd transformer input 1 of the same name described in described 32 another termination of resistance;
Described 3rd transformer output of the same name 3 connects described 3rd amplifier positive input, described another input 2 of 3rd transformer connects power input terminal, and described another output 4 of 3rd transformer connects described 3rd amplifier negative input and described 34 resistance link;
Described 3rd amplifier exports the 35 resistance and described 34 resistance link described in termination;
Another termination controller voltage sample input of described 35 resistance;
Described 32 resistance one end ground connection, the 3rd amplifier forward power end described in another termination;
Described 31 resistance one end ground connection, the 3rd amplifier negative sense power end described in another termination.
9. electric equipment as claimed in claim 8, it is characterized in that, described soft upper electric control low-voltage module comprises: the soft resistor group one that powers on of low pressure, the soft resistor group two that powers on of low pressure, the 4th contactor and the 5th contactor;
After the soft resistor group one that powers on of described low pressure is connected in parallel with described 4th contactor, one end is connected with described controller, the soft function selecting module that powers on described in another termination;
After the soft resistor group two that powers on of described low pressure is connected in parallel with described 5th contactor, one end is connected with described controller, the soft function selecting module that powers on of another termination.
10. as the electric equipment in claim 7-9 as described in any one, it is characterized in that, the described soft high-pressure section that powers on comprises: a soft upper electric control high voltage connector; Described soft upper electric control high voltage connector one end is connected with high voltage source bus by high-voltage switch gear, and the other end is connected with three-phase alternating current by high-voltage switch gear.
CN201520742657.5U 2015-09-23 2015-09-23 High -power converter of high pressure and have electrical equipment of this converter CN205178867U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105207462A (en) * 2015-09-23 2015-12-30 北京动力源科技股份有限公司 High-voltage high-power frequency converter and electrical equipment provided with same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105207462A (en) * 2015-09-23 2015-12-30 北京动力源科技股份有限公司 High-voltage high-power frequency converter and electrical equipment provided with same
CN105207462B (en) * 2015-09-23 2018-07-31 北京动力源科技股份有限公司 A kind of high-voltage high-power frequency transformator and the electrical equipment with the frequency converter

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