CN113872212A

CN113872212A - Intelligent voltage stabilizer

Info

Publication number: CN113872212A
Application number: CN202111052563.1A
Authority: CN
Inventors: 张谋龙
Original assignee: Sanity Quanzhou Electric Manufacture Co ltd
Current assignee: Sanity Quanzhou Electric Manufacture Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2021-12-31

Abstract

The invention relates to the field of electric power technology, is widely applied to a voltage regulating and stabilizing device, and particularly relates to a medium-voltage-stabilizing intelligent voltage stabilizing device which is simple to control, does not generate inverse peak voltage, is safe and reliable, and has a good voltage regulating effect.

Description

Intelligent voltage stabilizer

Technical Field

The invention relates to the field of electric power technology, is widely applied to voltage regulating and stabilizing devices, and particularly relates to a medium-voltage intelligent voltage stabilizing device.

Background

Electric power is one of the most important energy sources used in modern industry, agriculture and modern society life, and as a commodity, the electric power continuously flows, cannot be conveniently stored, and cannot be used for quality detection before use; the difference with other commodities is that the user is often far away from a power plant, the electric energy generated by a plurality of generators is simultaneously sent to a power grid and then sent to the user through a plurality of transformers and overhead lines or buried cables; the power supply side cannot recover the substandard power quality from the power supply network, and the user cannot reject the power, so that the power supply quality of the power utilization point is not easy to guarantee; the quality of the power provided by the power supplier often differs greatly from what the user desires; meanwhile, the change of some user loads can cause the deterioration of the power quality in the power grid, such as a large number of electronic devices, which cause serious pollution to both the power system and the power quality, affect the power quality of the utility grid, and also affect the power quality of users and the power quality of neighboring users.

And voltage quality issues include the following:

voltage deviation: the operation voltage value is within the range of +/-7% of the rated voltage value;

under voltage: the operation voltage value is within the range of 90-80% of the rated voltage value, and the voltage change lasts for more than 1 minute;

③ overvoltage: the operation voltage value is in the range of 110-120% of the rated voltage value and is continuous

Voltage change for more than 1 minute;

fourthly, short-time undervoltage, wherein the time range is 3 seconds to 1 minute;

short-time overvoltage, wherein the time range is 3 seconds to 1 minute;

sixthly, temporary overvoltage is carried out, wherein the time range is 60 milliseconds to 3 seconds;

seventhly, temporarily undervoltage, wherein the time range is 60 milliseconds to 3 seconds;

eighthly, unbalance of three-phase voltage: the unevenness of the three-phase voltage is more than or equal to 2 percent and the short time is more than or equal to 4 percent.

According to the safe voltage requirement of the electric equipment, namely, the voltage difference change of the voltage of the electric equipment is within +/-5%. Some requirements are higher, namely the voltage difference change of the terminal of the electric equipment is less than or equal to 2.5 percent, and the unbalance degree of the three-phase voltage is less than or equal to 2.6 percent. The current voltage regulation devices on the market mainly comprise an on-load tap changing transformer, reactive compensation equipment, a VQC voltage reactive control device, an induction type voltage regulator and a carbon brush type alternating current voltage stabilizer, but the products have the following defects: firstly, the no-load voltage regulating transformer has low cost and reliable performance, but cannot be synchronously adjusted along with the voltage change and can only be adjusted after power failure; the on-load tap changer can be synchronously adjusted along with the voltage change, but is provided with an on-load tap changer, so that the generation of electric arcs is difficult to avoid when the voltage is adjusted, and the on-load tap changer needs to be maintained frequently; the reactive compensation equipment has reliable performance, but can only repair the voltage change caused by reactive power and cannot repair the voltage change caused by active power; the VQC voltage reactive power control device can ensure the voltage quality, optimize the reactive power flow of the power grid, play an important role in the economic operation of the power grid and the like, and the continuous working safety time of the VQC voltage reactive power control device is less than or equal to 1000 hours; the response speed of the induction type voltage regulator is low although reliable, the voltage regulating speed is less than or equal to 5V/S, the efficiency is less than or equal to 93 percent, and the voltage stabilizing precision is less than or equal to +/-5 percent; and sixthly, the voltage regulating speed of the carbon brush type alternating current voltage stabilizer is less than or equal to 25V/S, and regular maintenance is needed.

The applicant also found that the no-load voltage regulating transformer can not be adjusted synchronously with the voltage change, and can only be adjusted after power failure, so that the no-load voltage regulating transformer is troublesome to use and cannot play an effective voltage stabilizing role. It is also found that when the voltage rises, the exciting current of the transformer is increased, the magnetic induction intensity B in the iron core is increased, the iron loss is increased, and the temperature rise of the iron core is increased to accelerate the insulation aging of the winding; secondly, the on-load tap changer is easy to generate electric arc when adjusting voltage. It is also found that if the maintenance is not timely, short-time undervoltage of power supply can be caused, so that advanced power utilization equipment stops working or is damaged, even voltage breakdown of a power supply system can be caused, and adverse effects are brought to production, operation and working life of the power utilization area; and thirdly, the reactive compensation equipment cannot repair voltage change caused by active power. It has been found that the capacitance reactive power is proportional to the square of the voltage, and that the voltage rise increases the reactive power, but increases the partial discharge due to the electric field enhancement, and decreases the insulation life, if it is 1.1U for a long period of time_NThe service life of the working furnace is reduced to about 44 percent of the rated service life. It is also found that the phenomena of explosion of the capacitor, bulging of the shell and the like are caused by partial discharge and insulation aging accumulation effects, so that the expected service life of the reactive power compensation device and the safe operation of power supply are seriously influenced by high voltage; and fourthly, the VQC voltage reactive power control device can cause short-time undervoltage of power supply if the continuous working safety time is more than or equal to 1000 hours and the maintenance is not timely, so that advanced power utilization equipment stops working or is damaged, and even a power supply system in the power utilization area is collapsed. Meanwhile, the root causes of the third step are caused by unreasonable voltage-regulating tap joints of the power transformer and unreliable on-load voltage-regulating tap joint switches; an induction type voltage regulator, the voltage regulating speed is less than or equal to 5V/S, the efficiency is less than or equal to 93 percent, and the voltage stabilizing precision is less than or equal to +/-5 percent; and sixthly, the voltage regulating speed of the carbon brush type alternating current voltage stabilizer is less than or equal to 25V/S, and regular maintenance is needed. It has also been found that, if the carbon brush is seriously worn, for example, without scheduled maintenanceIn the meantime, the copper pillars are burned off and power supply is affected, and safety accidents are caused.

In view of the above technical problems, the applicant invented: the intelligent voltage stabilizer comprises a first type of middle-stability intelligent voltage stabilizer, a second type of middle-stability numerical control voltage stabilizer, a third type of middle-stability intelligent control voltage stabilizer, a fourth type of middle-stability HV intelligent voltage stabilizer, a fifth type of middle-stability HV numerical control voltage stabilizer, a sixth type of middle-stability electric energy quality repairing device, a seventh type of middle-stability intelligent alternating current voltage stabilizer, an eighth type of middle-stability numerical control alternating current voltage stabilizer, a ninth type of middle-stability LV intelligent voltage stabilizer and a tenth type of middle-stability LV numerical control voltage stabilizer.

Disclosure of Invention

In order to solve the technical problems, the invention provides the medium-stability intelligent voltage stabilizing device which is simple to control, does not generate inverse peak voltage, is safe and reliable and has a good voltage regulating effect.

The invention discloses a medium-stability intelligent voltage stabilizing device, which comprises a three-phase voltage compensator and a three-phase regulator and is applied to various voltage class classifications and combination classifications. The three-phase voltage compensator comprises a primary coil A1, a primary coil A2, a primary coil B1, a primary coil B2, a primary coil C1, a primary coil C2, a secondary coil a1, a secondary coil a2, a secondary coil B1, a secondary coil B2, a secondary coil C1 and a secondary coil C2, and the three-phase voltage regulator comprises a coil U1, a coil U2, a coil V1, a coil V2, a coil W1, a coil W2 and X connectors arranged in the coils: respectively, linker XUO, linker XU +1, linker XU +2, linker XU +3, linker XU +4, linker XU +5, linker XU-1, linker XU-2, linker XU-3, linker XU-4, linker XU-5, linker XVO, linker XV +1, linker XV +2, linker XV +3, linker XV +4, linker XV +5, linker XV-1, linker XV-2, linker XV-3, linker XV-4, linker XV-5, and linker XWO, linker XW +1, linker XW +2, linker XW +3, linker XW +4, linker XW +5, linker XW-1, linker XW-2, linker XW-3, linker XW-4, linker XW-5.

The further improvement is that the three-phase voltage compensator also comprises an input protection switch and an output protection switch, and the primary coils of the three-phase voltage compensator are respectively and correspondingly connected with the input protection switch and the output protection switch.

Further improved, the system also comprises a bidirectional thyristor VTUO, a bidirectional thyristor VTU +1, a bidirectional thyristor VTU +2, a bidirectional thyristor VTU +3, a bidirectional thyristor VTU +4, a bidirectional thyristor VTU +5, a bidirectional thyristor VTU-1, a bidirectional thyristor VTU-2, a bidirectional thyristor VTU-3, a bidirectional thyristor VTU-4, a bidirectional thyristor VTU-5, a bidirectional thyristor VTVO, a bidirectional thyristor VTV +1, a bidirectional thyristor VTV +2, a bidirectional thyristor VTV +3, a bidirectional thyristor VTV +4, a bidirectional thyristor VTV +5, a bidirectional thyristor VTV-1, a bidirectional thyristor VTV-2, a bidirectional thyristor VTV-3, a bidirectional thyristor VTV-4, a bidirectional thyristor VTV-5, a bidirectional thyristor VTWO, a bidirectional thyristor VTW +1, a bidirectional thyristor VTW +2, a bidirectional thyristor VTW +3, a bidirectional thyristor VTU-3, The three-phase voltage compensator comprises a bidirectional thyristor VTW +4, a bidirectional thyristor VTW +5, a bidirectional thyristor VTW-1, a bidirectional thyristor VTW-2, a bidirectional thyristor VTW-3, a bidirectional thyristor VTW-4 and a bidirectional thyristor VTW-5, wherein a secondary coil a1 of the three-phase voltage compensator is connected with one end of the bidirectional thyristor VTUO, the bidirectional thyristor VTU +1, the bidirectional thyristor VTU +2, the bidirectional thyristor VTU +3, the bidirectional thyristor VTU +4, the bidirectional thyristor VTU +5, the bidirectional thyristor VTU-1, the bidirectional thyristor VTU-2, the bidirectional thyristor VTU-3, the bidirectional thyristor VTU-4 and the bidirectional thyristor VTU-5, a secondary coil a2 of the three-phase voltage compensator is connected with a joint XUO of a three-phase voltage regulator, a secondary coil b1 of the three-phase voltage compensator is connected with the bidirectional thyristor VTVO, the bidirectional thyristor VTV +1, the bidirectional thyristor VTV-5, The three-phase voltage compensator comprises one end of a bidirectional thyristor VTV +2, a bidirectional thyristor VTV +3, a bidirectional thyristor VTV +4, a bidirectional thyristor VTV +5, a bidirectional thyristor VTV-1, a bidirectional thyristor VTV-2, a bidirectional thyristor VTV-3, a bidirectional thyristor VTV-4 and a bidirectional thyristor VTV-5, a three-phase voltage compensator secondary coil b2 is connected with a three-phase voltage regulator joint XVO, a three-phase voltage compensator secondary coil c1 is connected with one end of a bidirectional thyristor VTWO, a bidirectional thyristor VTW +1, a bidirectional thyristor VTW +2, a bidirectional thyristor VTW +3, a bidirectional thyristor VTW +4, a bidirectional thyristor VTW +5, a bidirectional thyristor VTW-1, a bidirectional thyristor VTW-2, a bidirectional thyristor VTW-3, a bidirectional thyristor VTW-4 and a bidirectional thyristor VTW-5, a three-phase voltage compensator secondary coil c2 is connected with a three-phase voltage regulator joint XWO, the other end of the bidirectional thyristor VTUO is connected with a connector XUO, the other end of the bidirectional thyristor VTU +1 is connected with a connector XU +1, the other end of the bidirectional thyristor VTU +2 is connected with a connector XU +2, the other end of the bidirectional thyristor VTU +3 is connected with a connector XU +3, the other end of the bidirectional thyristor VTU +4 is connected with a connector XU +4, the other end of the bidirectional thyristor VTU +5 is connected with a connector XU +5, the other end of the bidirectional thyristor VTU-1 is connected with a connector XU-1, the other end of the bidirectional thyristor VTU-2 is connected with a connector XU-2, the other end of the bidirectional thyristor VTU-3 is connected with a connector XU-3, the other end of the bidirectional thyristor VTU-4 is connected with a connector XU-4, the other end of the bidirectional thyristor VTU-5 is connected with a connector XU-5, the other end of the bidirectional thyristor VTVO is connected with a joint XV, the other end of the bidirectional thyristor VTV +1 is connected with a joint XV +1, the other end of the bidirectional thyristor VTV +2 is connected with a joint XV +2, the other end of the bidirectional thyristor VTV +3 is connected with a joint XV +3, the other end of the bidirectional thyristor VTV +4 is connected with a joint XV +4, the other end of the bidirectional thyristor VTV +5 is connected with a joint XV +5, the other end of the bidirectional thyristor VTV-1 is connected with a joint XV-1, the other end of the bidirectional thyristor VTV-2 is connected with a joint XV-2, the other end of the bidirectional thyristor VTV-3 is connected with a joint XV-3, the other end of the bidirectional thyristor VTV-4 is connected with a joint XV-4, the other end of the bidirectional thyristor VTV-5 is connected with a joint XV-5, the other end of the bidirectional thyristor VTWO is connected with a connector XWO, the other end of the bidirectional thyristor VTW +1 is connected with a connector XW +1, the other end of the bidirectional thyristor VTW +2 is connected with a connector XW +2, the other end of the bidirectional thyristor VTW +3 is connected with a connector XW +3, the other end of the bidirectional thyristor VTW +4 is connected with a connector XW +4, the other end of the bidirectional thyristor VTW +5 is connected with a connector XW +5, the other end of the bidirectional thyristor VTW-1 is connected with a connector XW-1, the other end of the bidirectional thyristor VTW-2 is connected with a connector XW-2, the other end of the bidirectional thyristor VTW-3 is connected with a connector XW-3, the other end of the bidirectional thyristor VTW-4 is connected with a connector XW-4, the other end of the bidirectional thyristor VTW-5 is connected to the connector XW-5.

The further improvement is that, still include three-phase control protection switch, three-phase voltage compensator secondary coil a2 still connects in three-phase voltage compensator secondary coil b2 and three-phase voltage compensator secondary coil c2, three-phase voltage regulator coil U1 is connected in coil V2, three-phase voltage regulator coil U2 is connected in coil W1, three-phase voltage regulator coil V1 is connected in coil W2, three-phase control protection switch's one end corresponds respectively and is connected in three-phase voltage regulator coil U1, coil V1 and coil W1, three-phase control protection switch's the other end corresponds respectively and is connected in three-phase voltage compensator's output.

The further improvement still includes, three-phase voltage regulator coil U1 is connected in W2, three-phase voltage regulator U2 is connected in V1, three-phase voltage regulator V2 is connected in W1, joint and bidirectional triode thyristor one-to-one change and connect, three-phase control protection switch's one end corresponds respectively and is connected in three-phase voltage regulator coil U1, coil V1 and coil W1, three-phase control protection switch's the other end corresponds respectively and connects in three-phase voltage compensator's output.

The improved electric energy meter is characterized by further comprising a man-machine system, a master control system, a driving system, a voltage monitoring device and a metering device, wherein the three-phase input voltage, the current, the three-phase output voltage, the current, the three-phase voltage compensator and the three-phase voltage regulator are connected to the master control system, the voltage monitoring device can automatically record the current value, the maximum value and the minimum value of the three-phase input voltage in real time and automatically record the current value, the maximum value and the minimum value of the output voltage in real time, the metering device can automatically record the load electric quantity in real time, the man-machine system, the driving system, the voltage monitoring device and the metering device are connected to the master control system, and the master control system controls the three-phase voltage compensator and the three-phase voltage regulator to work through the driving system.

The further improvement is that the system also comprises a combination of more than 1 three-phase voltage compensator and three-phase voltage regulator which are connected in series or in parallel.

By adopting the technical scheme, the invention has the beneficial effects that: the invention provides a middle-stable intelligent voltage stabilizing device, which is shown in the attached figure 1 in detail,

when the power is switched on or the input voltage is equal to the rated voltage, the main control system controls the bidirectional thyristors VTUO, VTVO and VTWO to be switched on, and the secondary line graph of the three-phase voltage compensator is in short circuit, so that the output voltage is equal to the current voltage value. When the input voltage is less than the rated value, taking the input voltage equal to the rated value of 97% as an example: the main control system controls the bidirectional thyristors VTUO, VTVO and VTWO to be turned off, and simultaneously turns on the bidirectional thyristors VTU +1, VTV +1 and VTW +1, and the three-phase voltage regulator is used for performing voltage compensation on the three-phase voltage compensator, so that the output voltage is equal to the rated voltage value. When the input voltage is greater than the rated value, taking the input voltage equal to the rated value of 103% as an example: the master control system controls the bidirectional thyristors VTU +1, VTV +1 and VTW +1 to be switched off, and simultaneously switches on the bidirectional thyristors VTU-1, VTV-1 and VTW-1 to offset the voltage of the three-phase voltage regulator to the three-phase voltage compensator, so that the output voltage is equal to the rated voltage value.

The invention has simple control, no generation of inverse peak voltage, safety and reliability, high voltage regulation speed of less than or equal to 10 milliseconds, voltage regulation precision of less than or equal to 3 percent, efficiency of more than or equal to 99.5 percent, abnormal protection function, uninterrupted bypass direct connection function and under-voltage and over-voltage alarm function, continuous safe operation time of more than or equal to 24 months and service life of more than or equal to 15 years, and can overcome the defects of products on the market. Firstly, the no-load voltage regulating transformer can not be synchronously regulated along with the voltage change, and can only be regulated after power failure, so that it is troublesome to use and can not play an effective voltage stabilizing role. When the voltage rises, the exciting current of the transformer is increased, so that the magnetic induction intensity B in the iron core is increased, the iron loss is increased, and the temperature rise of the iron core is increased to accelerate the insulation aging of the winding; secondly, the on-load tap changer is easy to generate electric arc when adjusting voltage. Short-time undervoltage of power supply can be caused due to untimely overhaul, so that advanced power utilization equipment stops working or is damaged, even voltage breakdown of a power supply system can be caused, and adverse effects are brought to production, operation and working life of the power utilization area; and thirdly, the reactive compensation equipment cannot repair voltage change caused by active power. And the capacitance reactive power of the capacitor is proportional to the square of the voltage,the voltage rise increases the reactive power, but the electric field increases the partial discharge, which decreases the insulation life, and if it is 1.1U for a long period of time_NThe service life of the working furnace is reduced to about 44 percent of the rated service life. It is also found that the phenomena of explosion of the capacitor, bulging of the shell and the like are caused by partial discharge and insulation aging accumulation effects, so that the expected service life of the reactive power compensation device and the safe operation of power supply are seriously influenced by high voltage; and fourthly, the VQC voltage reactive power control device can cause short-time undervoltage of power supply if the continuous working safety time is more than or equal to 1000 hours and the maintenance is not timely, so that advanced power utilization equipment stops working or is damaged, and even a power supply system in the power utilization area is collapsed. Meanwhile, the root causes of the third step are caused by unreasonable voltage-regulating tap joints of the power transformer and unreliable on-load voltage-regulating tap joint switches; an induction type voltage regulator, the voltage regulating speed is less than or equal to 5V/S, the efficiency is less than or equal to 93 percent, and the voltage stabilizing precision is less than or equal to +/-5 percent; and sixthly, the voltage regulating speed of the carbon brush type alternating current voltage stabilizer is less than or equal to 25V/S, and regular maintenance is needed. It has also been found that if the carbon brush is not maintained regularly, when the carbon brush is worn seriously, the copper column is burnt off and the power supply is affected, and the safety accident is caused seriously.

Drawings

FIG. 1 is a schematic circuit diagram of a medium-voltage intelligent voltage regulator according to an embodiment of the present invention;

FIG. 2 is a diagram of an interface of a human-machine system in an embodiment of the invention;

FIG. 3 is a diagram of an interface of a human-machine system in an embodiment of the invention, FIG. 2;

FIG. 4 is an interface diagram of a metering device in an embodiment of the present invention:

FIG. 5 is a diagram of an interface of a voltage monitoring device according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description:

as shown in fig. 1: the intelligent voltage stabilizer includes three-phase voltage compensator and three-phase regulator, and is used for various voltage classes and combinations. The three-phase voltage compensator comprises a primary coil A1, a primary coil A2, a primary coil B1, a primary coil B2, a primary coil C1, a primary coil C2, a secondary coil a1, a secondary coil a2, a secondary coil B1, a secondary coil B2, a secondary coil C1 and a secondary coil C2, and the three-phase voltage regulator comprises a coil U1, a coil U2, a coil V1, a coil V2, a coil W1, a coil W2 and X connectors arranged in the coils: respectively, linker XUO, linker XU +1, linker XU +2, linker XU +3, linker XU +4, linker XU +5, linker XU-1, linker XU-2, linker XU-3, linker XU-4, linker XU-5, linker XVO, linker XV +1, linker XV +2, linker XV +3, linker XV +4, linker XV +5, linker XV-1, linker XV-2, linker XV-3, linker XV-4, linker XV-5, and linker XWO, linker XW +1, linker XW +2, linker XW +3, linker XW +4, linker XW +5, linker XW-1, linker XW-2, linker XW-3, linker XW-4, linker XW-5. The three-phase voltage compensator comprises a three-phase voltage compensator, and is characterized by further comprising an input protection switch and an output protection switch, wherein the primary coils of the three-phase voltage compensator are correspondingly connected to the input protection switch and the output protection switch respectively. Also comprises a bidirectional thyristor VTUO, a bidirectional thyristor VTU +1, a bidirectional thyristor VTU +2, a bidirectional thyristor VTU +3, a bidirectional thyristor VTU +4, a bidirectional thyristor VTU +5, a bidirectional thyristor VTU-1, a bidirectional thyristor VTU-2, a bidirectional thyristor VTU-3, a bidirectional thyristor VTU-4, a bidirectional thyristor VTU-5, a bidirectional thyristor VTVO, a bidirectional thyristor VTV +1, a bidirectional thyristor VTV +2, a bidirectional thyristor VTV +3, a bidirectional thyristor VTV +4, a bidirectional thyristor VTV +5, a bidirectional thyristor VTV-1, a bidirectional thyristor VTV-2, a bidirectional thyristor VTV-3, a bidirectional thyristor VTV-4, a bidirectional thyristor VTV-5, a bidirectional thyristor WO, a bidirectional thyristor VTW +1, a bidirectional thyristor VTW +2, a bidirectional thyristor VTW +3, a bidirectional thyristor VTW +4, a bidirectional thyristor VTU +3, a bidirectional thyristor VTU-4, The three-phase voltage compensator comprises a bidirectional thyristor VTW +5, a bidirectional thyristor VTW-1, a bidirectional thyristor VTW-2, a bidirectional thyristor VTW-3, a bidirectional thyristor VTW-4 and a bidirectional thyristor VTW-5, wherein a secondary coil a1 of the three-phase voltage compensator is connected with a bidirectional thyristor VTUO, a bidirectional thyristor VTU +1, a bidirectional thyristor VTU +2, a bidirectional thyristor VTU +3, a bidirectional thyristor VTU +4, a bidirectional thyristor VTU +5, a bidirectional thyristor VTU-1, a bidirectional thyristor VTU-2, a bidirectional thyristor VTU-3, a bidirectional thyristor VTU-4 and one end of a bidirectional thyristor VTU-5, a secondary coil a2 of the three-phase voltage compensator is connected with a three-phase voltage regulator joint XUO, and a secondary coil b1 of the three-phase voltage compensator is connected with a bidirectional thyristor VTVO, a bidirectional thyristor VTV +1, a bidirectional thyristor VTV +2, One end of bidirectional thyristor VTV +3, VTV +4, VTV +5, VTV-1, VTV-2, VTV-3, VTV-4 and VTV-5, the secondary coil b2 is connected to the joint XVO of the three-phase voltage regulator, the secondary coil c1 is connected to one end of VTWO, VTW +1, VTW +2, VTW +3, VTW +4, VTW +5, VTW-1, VTW-2, VTW-3, VTW-5, the secondary coil c2 is connected to the joint XWO of the three-phase voltage regulator, the other end of the bidirectional thyristor VTUO is connected with a connector XUO, the other end of the bidirectional thyristor VTU +1 is connected with a connector XU +1, the other end of the bidirectional thyristor VTU +2 is connected with a connector XU +2, the other end of the bidirectional thyristor VTU +3 is connected with a connector XU +3, the other end of the bidirectional thyristor VTU +4 is connected with a connector XU +4, the other end of the bidirectional thyristor VTU +5 is connected with a connector XU +5, the other end of the bidirectional thyristor VTU-1 is connected with a connector XU-1, the other end of the bidirectional thyristor VTU-2 is connected with a connector XU-2, the other end of the bidirectional thyristor VTU-3 is connected with a connector XU-3, the other end of the bidirectional thyristor VTU-4 is connected with a connector XU-4, the other end of the bidirectional thyristor VTU-5 is connected with a connector XU-5, the other end of the bidirectional thyristor VTVO is connected with a joint XV, the other end of the bidirectional thyristor VTV +1 is connected with a joint XV +1, the other end of the bidirectional thyristor VTV +2 is connected with a joint XV +2, the other end of the bidirectional thyristor VTV +3 is connected with a joint XV +3, the other end of the bidirectional thyristor VTV +4 is connected with a joint XV +4, the other end of the bidirectional thyristor VTV +5 is connected with a joint XV +5, the other end of the bidirectional thyristor VTV-1 is connected with a joint XV-1, the other end of the bidirectional thyristor VTV-2 is connected with a joint XV-2, the other end of the bidirectional thyristor VTV-3 is connected with a joint XV-3, the other end of the bidirectional thyristor VTV-4 is connected with a joint XV-4, the other end of the bidirectional thyristor VTV-5 is connected with a joint XV-5, the other end of the bidirectional thyristor VTWO is connected with a connector XWO, the other end of the bidirectional thyristor VTW +1 is connected with a connector XW +1, the other end of the bidirectional thyristor VTW +2 is connected with a connector XW +2, the other end of the bidirectional thyristor VTW +3 is connected with a connector XW +3, the other end of the bidirectional thyristor VTW +4 is connected with a connector XW +4, the other end of the bidirectional thyristor VTW +5 is connected with a connector XW +5, the other end of the bidirectional thyristor VTW-1 is connected with a connector XW-1, the other end of the bidirectional thyristor VTW-2 is connected with a connector XW-2, the other end of the bidirectional thyristor VTW-3 is connected with a connector XW-3, the other end of the bidirectional thyristor VTW-4 is connected with a connector XW-4, the other end of the bidirectional thyristor VTW-5 is connected to the connector XW-5. Still include three-phase control protection switch, three-phase voltage compensator secondary coil a2 still connects in three-phase voltage compensator secondary coil b2 and three-phase voltage compensator secondary coil c2, three-phase voltage regulator coil U1 is connected in coil V2, three-phase voltage regulator coil U2 is connected in coil W1, three-phase voltage regulator coil V1 is connected in coil W2, three-phase control protection switch's one end corresponds respectively and connects in three-phase voltage regulator coil U1, coil V1 and coil W1, three-phase control protection switch's the other end corresponds respectively and connects in three-phase voltage compensator's output. Still include, three-phase voltage regulator coil U1 is connected in W2, three-phase voltage regulator U2 is connected in V1, three-phase voltage regulator V2 is connected in W1, joint and bidirectional triode thyristor one-to-one change connect, three-phase control protection switch's one end corresponds respectively and connects in three-phase voltage regulator coil U1, coil V1 and coil W1, three-phase control protection switch's the other end corresponds respectively and connects in three-phase voltage compensator's output. The device comprises a main control system, a man-machine system, a driving system, a voltage monitoring device and a metering device, wherein three-phase input voltage, current, three-phase output voltage, current, a three-phase voltage compensator and a three-phase voltage regulator are connected to the main control system, the voltage monitoring device can automatically record the current value, the maximum value and the minimum value of the three-phase input voltage and automatically record the current value, the maximum value and the minimum value of the output voltage in real time, the metering device can automatically record load electric quantity in real time, the man-machine system, the driving system, the voltage monitoring device and the metering device are connected to the main control system, and the main control system controls the three-phase voltage compensator and the three-phase voltage regulator to work through the driving system. FIGS. 2-3 are interface diagrams of the human-machine system of the present invention: the method comprises factory setting and user setting, wherein the factory setting comprises rated voltage value setting, voltage stabilization precision setting, three-phase voltage sigma u protection setting, overcurrent protection setting, voltage stabilization fault processing setting, input fault processing setting, voltmeter proofreading and ammeter proofreading.

The invention also discloses a medium-stability intelligent voltage stabilizing device, which also comprises a combination of more than 1 three-phase voltage compensator and three-phase voltage regulator which are connected in series or in parallel, and is also in the protection scope of the invention.

The working principle is as follows: when the power is switched on or the input voltage is equal to the rated voltage, the main control system controls the bidirectional thyristors VTUO, VTVO and VTWO to be switched on, and the secondary line graph of the three-phase voltage compensator is in short circuit, so that the output voltage is equal to the current voltage value. When the input voltage is less than the rated value, taking the input voltage equal to the rated value of 97% as an example: the main control system controls the bidirectional thyristors VTUO, VTVO and VTWO to be turned off, and simultaneously turns on the bidirectional thyristors VTU +1, VTV +1 and VTW +1, and the three-phase voltage regulator is used for performing voltage compensation on the three-phase voltage compensator, so that the output voltage is equal to the rated voltage value. When the input voltage is greater than the rated value, taking the input voltage equal to the rated value of 103% as an example: the master control system controls the bidirectional thyristors VTU +1, VTV +1 and VTW +1 to be switched off, and simultaneously switches on the bidirectional thyristors VTU-1, VTV-1 and VTW-1 to offset the voltage of the three-phase voltage regulator to the three-phase voltage compensator, so that the output voltage is equal to the rated voltage value.

The present invention has been described in detail with reference to the specific embodiments, but these should not be construed as limitations of the present invention. Numerous variations and modifications can be made by those skilled in the art without departing from the principles of the invention, which should also be viewed as the protection of the invention.

Claims

1. The utility model provides a well steady intelligent voltage regulator device which characterized in that: including three-phase voltage compensators and three-phase regulators, and is applied to various voltage class classifications and combination classifications. The three-phase voltage compensator comprises a primary coil A1, a primary coil A2, a primary coil B1, a primary coil B2, a primary coil C1, a primary coil C2, a secondary coil a1, a secondary coil a2, a secondary coil B1, a secondary coil B2, a secondary coil C1 and a secondary coil C2, and the three-phase voltage regulator comprises a coil U1, a coil U2, a coil V1, a coil V2, a coil W1, a coil W2 and X connectors arranged in the coils: respectively, linker XUO, linker XU +1, linker XU +2, linker XU +3, linker XU +4, linker XU +5, linker XU-1, linker XU-2, linker XU-3, linker XU-4, linker XU-5, linker XVO, linker XV +1, linker XV +2, linker XV +3, linker XV +4, linker XV +5, linker XV-1, linker XV-2, linker XV-3, linker XV-4, linker XV-5, and linker XWO, linker XW +1, linker XW +2, linker XW +3, linker XW +4, linker XW +5, linker XW-1, linker XW-2, linker XW-3, linker XW-4, linker XW-5.

2. The intelligent voltage stabilizing device of claim 1, wherein: the three-phase voltage compensator comprises a three-phase voltage compensator, and is characterized by further comprising an input protection switch and an output protection switch, wherein the primary coils of the three-phase voltage compensator are correspondingly connected to the input protection switch and the output protection switch respectively.

3. The intelligent voltage stabilizing device of claim 2, wherein: also comprises a bidirectional thyristor VTUO, a bidirectional thyristor VTU +1, a bidirectional thyristor VTU +2, a bidirectional thyristor VTU +3, a bidirectional thyristor VTU +4, a bidirectional thyristor VTU +5, a bidirectional thyristor VTU-1, a bidirectional thyristor VTU-2, a bidirectional thyristor VTU-3, a bidirectional thyristor VTU-4, a bidirectional thyristor VTU-5, a bidirectional thyristor VTVO, a bidirectional thyristor VTV +1, a bidirectional thyristor VTV +2, a bidirectional thyristor VTV +3, a bidirectional thyristor VTV +4, a bidirectional thyristor VTV +5, a bidirectional thyristor VTV-1, a bidirectional thyristor VTV-2, a bidirectional thyristor VTV-3, a bidirectional thyristor VTV-4, a bidirectional thyristor VTV-5, a bidirectional thyristor WO, a bidirectional thyristor VTW +1, a bidirectional thyristor VTW +2, a bidirectional thyristor VTW +3, a bidirectional thyristor VTW +4, a bidirectional thyristor VTU +3, a bidirectional thyristor VTU-4, The three-phase voltage compensator comprises a bidirectional thyristor VTW +5, a bidirectional thyristor VTW-1, a bidirectional thyristor VTW-2, a bidirectional thyristor VTW-3, a bidirectional thyristor VTW-4 and a bidirectional thyristor VTW-5, wherein a secondary coil a1 of the three-phase voltage compensator is connected with a bidirectional thyristor VTUO, a bidirectional thyristor VTU +1, a bidirectional thyristor VTU +2, a bidirectional thyristor VTU +3, a bidirectional thyristor VTU +4, a bidirectional thyristor VTU +5, a bidirectional thyristor VTU-1, a bidirectional thyristor VTU-2, a bidirectional thyristor VTU-3, a bidirectional thyristor VTU-4 and one end of a bidirectional thyristor VTU-5, a secondary coil a2 of the three-phase voltage compensator is connected with a three-phase voltage regulator joint XUO, and a secondary coil b1 of the three-phase voltage compensator is connected with a bidirectional thyristor VTVO, a bidirectional thyristor VTV +1, a bidirectional thyristor VTV +2, One end of bidirectional thyristor VTV +3, VTV +4, VTV +5, VTV-1, VTV-2, VTV-3, VTV-4 and VTV-5, the secondary coil b2 is connected to the joint XVO of the three-phase voltage regulator, the secondary coil c1 is connected to one end of VTWO, VTW +1, VTW +2, VTW +3, VTW +4, VTW +5, VTW-1, VTW-2, VTW-3, VTW-5, the secondary coil c2 is connected to the joint XWO of the three-phase voltage regulator, the other end of the bidirectional thyristor VTUO is connected with a connector XUO, the other end of the bidirectional thyristor VTU +1 is connected with a connector XU +1, the other end of the bidirectional thyristor VTU +2 is connected with a connector XU +2, the other end of the bidirectional thyristor VTU +3 is connected with a connector XU +3, the other end of the bidirectional thyristor VTU +4 is connected with a connector XU +4, the other end of the bidirectional thyristor VTU +5 is connected with a connector XU +5, the other end of the bidirectional thyristor VTU-1 is connected with a connector XU-1, the other end of the bidirectional thyristor VTU-2 is connected with a connector XU-2, the other end of the bidirectional thyristor VTU-3 is connected with a connector XU-3, the other end of the bidirectional thyristor VTU-4 is connected with a connector XU-4, the other end of the bidirectional thyristor VTU-5 is connected with a connector XU-5, the other end of the bidirectional thyristor VTVO is connected with a joint XV, the other end of the bidirectional thyristor VTV +1 is connected with a joint XV +1, the other end of the bidirectional thyristor VTV +2 is connected with a joint XV +2, the other end of the bidirectional thyristor VTV +3 is connected with a joint XV +3, the other end of the bidirectional thyristor VTV +4 is connected with a joint XV +4, the other end of the bidirectional thyristor VTV +5 is connected with a joint XV +5, the other end of the bidirectional thyristor VTV-1 is connected with a joint XV-1, the other end of the bidirectional thyristor VTV-2 is connected with a joint XV-2, the other end of the bidirectional thyristor VTV-3 is connected with a joint XV-3, the other end of the bidirectional thyristor VTV-4 is connected with a joint XV-4, the other end of the bidirectional thyristor VTV-5 is connected with a joint XV-5, the other end of the bidirectional thyristor VTWO is connected with a connector XWO, the other end of the bidirectional thyristor VTW +1 is connected with a connector XW +1, the other end of the bidirectional thyristor VTW +2 is connected with a connector XW +2, the other end of the bidirectional thyristor VTW +3 is connected with a connector XW +3, the other end of the bidirectional thyristor VTW +4 is connected with a connector XW +4, the other end of the bidirectional thyristor VTW +5 is connected with a connector XW +5, the other end of the bidirectional thyristor VTW-1 is connected with a connector XW-1, the other end of the bidirectional thyristor VTW-2 is connected with a connector XW-2, the other end of the bidirectional thyristor VTW-3 is connected with a connector XW-3, the other end of the bidirectional thyristor VTW-4 is connected with a connector XW-4, the other end of the bidirectional thyristor VTW-5 is connected to the connector XW-5.

4. The intelligent voltage stabilizing device of claim 3, wherein: still include three-phase control protection switch, three-phase voltage compensator secondary coil a2 still connects in three-phase voltage compensator secondary coil b2 and three-phase voltage compensator secondary coil c2, three-phase voltage regulator coil U1 is connected in coil V2, three-phase voltage regulator coil U2 is connected in coil W1, three-phase voltage regulator coil V1 is connected in coil W2, three-phase control protection switch's one end corresponds respectively and connects in three-phase voltage regulator coil U1, coil V1 and coil W1, three-phase control protection switch's the other end corresponds respectively and connects in three-phase voltage compensator's output.

5. The intelligent voltage stabilizing device of claim 4, wherein: still include, three-phase voltage regulator coil U1 is connected in W2, three-phase voltage regulator U2 is connected in V1, three-phase voltage regulator V2 is connected in W1, joint and bidirectional triode thyristor one-to-one change connect, three-phase control protection switch's one end corresponds respectively and connects in three-phase voltage regulator coil U1, coil V1 and coil W1, three-phase control protection switch's the other end corresponds respectively and connects in three-phase voltage compensator's output.

6. The intelligent voltage stabilizing device of claim 5, wherein: the device comprises a main control system, a man-machine system, a driving system, a voltage monitoring device and a metering device, wherein three-phase input voltage, current, three-phase output voltage, current, a three-phase voltage compensator and a three-phase voltage regulator are connected to the main control system, the voltage monitoring device can automatically record the current value, the maximum value and the minimum value of the three-phase input voltage and automatically record the current value, the maximum value and the minimum value of the output voltage in real time, the metering device can automatically record load electric quantity in real time, the man-machine system, the driving system, the voltage monitoring device and the metering device are connected to the main control system, and the main control system controls the three-phase voltage compensator and the three-phase voltage regulator to work through the driving system.

7. The intelligent voltage stabilizing device of claim 6, wherein: the three-phase voltage compensator also comprises a combination of more than 1 three-phase voltage compensator and three-phase voltage regulator which are connected in series or in parallel.