阅读说明：本技术 一种多目标电压质量修复装置 (Multi-target voltage quality repairing device ) 是由 张谋龙 于 2021-06-22 设计创作，主要内容包括：本发明涉及稳压器技术领域,具体是涉及一种控制简单、不产生反峰电压、安全可靠、调压效果好的多目标电压质量修复装置,包括复数个串联连接的三相电抗器T,各组所述三相电抗器T均包括初级绕组1、初级绕组2、初级绕组3、初级绕组4、初级绕组5、初级绕组6、初级绕组7、初级绕组8、初级绕组9以及次级绕组。(The invention relates to the technical field of voltage stabilizers, in particular to a multi-target voltage quality restoration device which is simple to control, does not generate peak inversion voltage, is safe and reliable and has a good voltage regulation effect, and comprises a plurality of three-phase reactors T which are connected in series, wherein each group of three-phase reactors T comprises a primary winding 1, a primary winding 2, a primary winding 3, a primary winding 4, a primary winding 5, a primary winding 6, a primary winding 7, a primary winding 8, a primary winding 9 and a secondary winding.)

1. A multi-target voltage quality repair device is characterized in that: the three-phase reactor comprises a plurality of three-phase reactors T which are connected in series, wherein each group of three-phase reactors T comprises a primary winding 1, a primary winding 2, a primary winding 3, a primary winding 4, a primary winding 5, a primary winding 6, a primary winding 7, a primary winding 8, a primary winding 9 and a secondary winding.

2. The multi-target voltage quality repair device of claim 1, wherein: the primary winding 1 is connected with a thyristor VT1, a thyristor VT2 is connected between the primary winding 2 and the primary winding 3, the primary winding 3 is connected with a thyristor VT3, the primary winding 4 is connected with a thyristor VT4, a thyristor VT5 is connected between the primary winding 5 and the primary winding 6, the primary winding 6 is connected with a thyristor VT6, the primary winding 7 is connected with a thyristor VT7, the primary winding 8 and the primary winding 9 are connected with a thyristor VT8, and the primary winding 9 is connected with a thyristor VT 9.

3. The multi-target voltage quality repair device of claim 1, wherein: the primary winding 1 is connected with a thyristor VT1, a thyristor VT2 is connected between the primary winding 1 and the primary winding 2, the primary winding 3 is connected with a thyristor VT3, the primary winding 4 is connected with a thyristor VT4, a thyristor VT5 is connected between the primary winding 4 and the primary winding 5, the primary winding 6 is connected with a thyristor VT6, the primary winding 7 is connected with a thyristor VT7, the primary winding 7 and the primary winding 8 are connected with a thyristor VT8, and the primary winding 9 is connected with a thyristor VT 9.

4. The multi-target voltage quality repair device of claim 1, wherein: the primary winding 1 is connected with a thyristor VT1, a thyristor VT2 is connected between the primary winding 1 and the primary winding 3, the primary winding 3 is connected with a thyristor VT3, the primary winding 4 is connected with a thyristor VT4, a thyristor VT5 is connected between the primary winding 4 and the primary winding 6, the primary winding 6 is connected with a thyristor VT6, the primary winding 7 is connected with a thyristor VT7, the primary winding 7 and the primary winding 9 are connected with a thyristor VT8, and the primary winding 9 is connected with a thyristor VT 9.

5. The multi-target voltage quality repair device of claim 1, wherein: be connected with filter LC1 between primary 1 and the primary 3, be connected with filter LC2 between primary 1 and the primary 2, be connected with filter LC3 between primary 2 and the primary 3, be connected with filter LC4 between primary 4 and the primary 6, be connected with filter LC5 between primary 4 and the primary 5, be connected with filter LC6 between primary 5 and the primary 6, be connected with filter LC7 between primary 7 and the primary 9, be connected with filter LC8 between primary 7 and the primary 8, be connected with filter LC9 between primary 8 and the primary 9.

6. The multi-target voltage quality repair apparatus of claim 2, wherein: the control protection device comprises a control protection device QF1, a control protection device QF2 and a control protection device QF3, one end of the QF1 is connected with the thyristors VT1 and VT3, the other end of the QF1 is connected with the phase A output end, one end of the QF2 is connected with the thyristors VT4 and VT6, the other end of the QF2 is connected with the phase B output end, one end of the QF3 is connected with the thyristors VT7 and VT9, and the other end of the QF3 is connected with the phase C output end.

7. The multi-target voltage quality repair device of claim 1, wherein: and the primary winding 2, the primary winding 5 and the primary winding 8 are connected with N wires.

8. The multi-target voltage quality repair device of claim 1, wherein: the three-phase electric reactor system comprises a main control system device, a three-phase electric reactor T, a three-phase input voltage, a three-phase output current, a three-phase electric reactor T, a man-machine system device, a driving system device and a touch screen operation interface, wherein the man-machine system device and the driving system device are connected with the main control system device, and the main control system device controls the three-phase electric reactor T to work through the driving system device.

9. A multi-target voltage quality repair device is characterized in that: the three-phase reactor comprises a plurality of single-phase reactors T connected in series and three groups of single-phase reactors T, wherein each group of single-phase reactors T comprises a primary winding 1, a primary winding 2 and a primary winding 3.

Technical Field

The invention relates to the field of voltage regulators, in particular to a multi-target voltage quality repairing 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.

The voltage quality issues include the following:

voltage deviation: the operation voltage value is within the range of +/-10% of the rated voltage value;

under voltage: voltage variation of operating voltage value within 90-80% of rated voltage value and lasting for more than 1 minute;

③ overvoltage: the voltage variation of the operating voltage value, which is in the range of 110-120% of the rated voltage value and lasts 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;

the instantaneous overvoltage is in the time range of 10-60 milliseconds;

ninthly, instantaneous under-voltage, wherein the time range is 10-60 milliseconds;

the three-phase voltage at the r is unbalanced.

According to the safety voltage requirement of electric equipment, the voltage difference change of the end voltage of the electric equipment is +/-5%, some requirements are higher, the voltage difference change of the end voltage of the electric equipment is less than or equal to 2.5% at most, the alternating current voltage stabilizer is widely applied to various industries and used for repairing and optimizing the voltage quality problem, the conventional alternating current voltage stabilizer generally comprises a mechanical type non-contact voltage stabilizer, the mechanical type voltage stabilizer needs periodic maintenance, if the periodic maintenance is not carried out, when the carbon brush is seriously worn, the copper column burns out when the power is supplied, and the serious person causes safety accidents, in addition, the mechanical type voltage stabilizer has low voltage regulation speed (25V/min), the voltage regulation speed of the non-contact voltage stabilizer is high by 100 milliseconds, but the mechanical type voltage stabilizer is often unstable in working in places with large voltage change during operation, fuses and modules are burnt, and the light person responds to production, and the serious person causes safety accidents.

The applicant also finds that if voltage compensation transposition is needed, transposition of a plurality of silicon controlled switches must be carried out in and out to achieve reality, and the silicon controlled switches cannot achieve hardware interlocking, in order to prevent a group of series-connected controllable switches from being conducted simultaneously, "preset dead time" is preset between the series-parallel controllable switches, the "preset dead time" is theoretically reliable, and actually, the problem is not really solved, because the "preset dead time" enables the "compensation transformation open circuit" to cause different degrees of inverse peak voltages, and the silicon controlled switches can be broken down when the inverse peak voltages are serious. The short circuit, the light response production and the heavy cause safety accidents, and the preset dead time also causes that the current value of the output voltage is instantaneously lower than the current value of the input voltage (the instantaneously low voltage value is the compensation value of the voltage stabilizer), so that the condition can cause different degrees of response to the electric equipment.

Disclosure of Invention

In order to solve the technical problems, the invention provides the multi-target voltage quality restoration device which is simple to control, does not generate inverse peak voltage, is safe and reliable and has a good voltage regulation effect.

The technical scheme of the invention is as follows: a multi-target voltage quality restoration device comprises a plurality of three-phase reactors T connected in series, wherein each group of three-phase reactors T comprises a primary winding 1, a primary winding 2, a primary winding 3, a primary winding 4, a primary winding 5, a primary winding 6, a primary winding 7, a primary winding 8, a primary winding 9 and a secondary winding.

Preferably, a thyristor VT1 is connected to the primary winding 1, a thyristor VT2 is connected between the primary winding 2 and the primary winding 3, the primary winding 3 is connected to the thyristor VT3, a thyristor VT4 is connected to the primary winding 4, a thyristor VT5 is connected between the primary winding 5 and the primary winding 6, the primary winding 6 is connected to the thyristor VT6, a thyristor VT7 is connected to the primary winding 7, a thyristor VT8 is connected to the primary winding 8 and the primary winding 9, and a thyristor VT9 is connected to the primary winding 9.

Preferably, a thyristor VT1 is connected to the primary winding 1, a thyristor VT2 is connected between the primary winding 1 and the primary winding 2, the primary winding 3 is connected to the thyristor VT3, the primary winding 4 is connected to the thyristor VT4, a thyristor VT5 is connected between the primary winding 4 and the primary winding 5, the primary winding 6 is connected to the thyristor VT6, the primary winding 7 is connected to the thyristor VT7, the primary winding 7 and the primary winding 8 are connected to the thyristor VT8, and the primary winding 9 is connected to the thyristor VT 9.

Preferably, a thyristor VT1 is connected to the primary winding 1, a thyristor VT2 is connected between the primary winding 1 and the primary winding 3, the primary winding 3 is connected to the thyristor VT3, a thyristor VT4 is connected to the primary winding 4, a thyristor VT5 is connected between the primary winding 4 and the primary winding 6, the primary winding 6 is connected to the thyristor VT6, a thyristor VT7 is connected to the primary winding 7, a thyristor VT8 is connected to the primary winding 7 and the primary winding 9, and the primary winding 9 is connected to the thyristor VT 9.

Preferably, a filtering device LC1 is connected between the primary winding 1 and the primary winding 3, a filtering device LC2 is connected between the primary winding 1 and the primary winding 2, a filtering device LC3 is connected between the primary winding 2 and the primary winding 3, a filtering device LC4 is connected between the primary winding 4 and the primary winding 6, a filtering device LC5 is connected between the primary winding 4 and the primary winding 5, a filtering device LC6 is connected between the primary winding 5 and the primary winding 6, a filtering device LC7 is connected between the primary winding 7 and the primary winding 9, a filtering device LC8 is connected between the primary winding 7 and the primary winding 8, and a filtering device LC9 is connected between the primary winding 8 and the primary winding 9.

Preferably, the control protection device further comprises a control protection device QF1, QF2 and QF3, one end of the QF1 is connected with the thyristors VT1 and VT3, the other end of the QF1 is connected with the phase A output end, one end of the QF2 is connected with the thyristors VT4 and VT6, the other end of the QF2 is connected with the phase B output end, one end of the QF3 is connected with the thyristors VT7 and VT9, and the other end of the QF3 is connected with the phase C output end.

Preferably, the primary winding 2, the primary winding 5 and the primary winding 8 are connected to N wires.

Preferably, the system also comprises a man-machine system device, a main control system device and a driving system device,

the three-phase reactor control system comprises a main control system device, a man-machine system device, a driving system device, a three-phase input voltage, a three-phase output current and three-phase reactors T of each group are connected to the main control system device, the man-machine system device and the driving system device are connected to the main control system device, the man-machine system device is a touch screen operation interface, and the main control system device controls the three-phase reactors T to work through the driving system device.

Preferably, the three-phase reactor comprises a plurality of single-phase reactors T connected in series and three groups of single-phase reactors T, wherein each group of single-phase reactors T comprises a primary winding 1, a primary winding 2 and a primary winding 3.

By adopting the technical scheme, the invention has the beneficial effects that: the invention provides a multi-target voltage quality repairing device, when the power is on or the input voltage is equal to the rated voltage, a main control system device controls VT2, VT5 and VT8 to be switched on, VT1, VT4, VT7, VT3, VT6 and VT9 to be switched off, a primary winding is in short circuit to enable the input voltage to be equal to the output voltage, when the input voltage is lower than the rated voltage, the main control system device controls VT2, VT5, VT8, VT3, VT6 and VT9 to be switched off, VT1, VT4 and VT7 to be switched on, so that the primary winding performs voltage compensation on a secondary, the output voltage reaches the rated voltage value, when the input voltage is higher than the rated voltage, the main control system device controls VT1, VT4, VT7, VT2, VT5, VT8 to be switched off, VT3, VT6 and VT9 to enable the primary winding to perform voltage compensation on the secondary, the output voltage of the secondary, the rated voltage reaches the rated voltage value, the voltage of the invention can be controlled simply, the voltage can not generate the counter voltage peak speed of the rated voltage, the fast and the speed of the invention can not generate the safety regulation of the second and the voltage can not be adjusted to be easily, The voltage stabilizing range is not more than 40 percent, the stabilizing precision is high +/-1.5 percent, the rated capacity is not more than 5000KVA, and the like, and can overcome and supplement the defects of products on the market, such as the defects of a mechanical voltage stabilizer that the voltage regulating speed is slow and the abrasion of a carbon brush easily causes safety accidents.

Drawings

FIG. 1 is a schematic circuit diagram of a multi-target voltage quality remediation device according to an embodiment of the present invention;

FIG. 2 is a diagram of an interface of the human machine system device of the embodiment of the invention shown in FIG. 1;

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

FIG. 4 is a diagram of an interface of the human-machine system device in an embodiment of the invention shown in FIG. 3.

Detailed Description

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

as shown in fig. 1, 2, 3 and 4, the multi-target voltage quality restoration device comprises a plurality of three-phase reactors T connected in series, each group of three-phase reactors T comprises a primary winding 1, a primary winding 2, a primary winding 3, a primary winding 4, a primary winding 5, a primary winding 6, a primary winding 7, a primary winding 8, a primary winding 9 and a secondary winding, the primary winding 1 is connected with a thyristor VT1, a thyristor VT2 is connected between the primary winding 2 and the primary winding 3, the primary winding 3 is connected with a thyristor VT3, the primary winding 4 is connected with a thyristor VT4, a thyristor VT5 is connected between the primary winding 5 and the primary winding 6, the primary winding 6 is connected with a VT thyristor 6, the primary winding 7 is connected with a thyristor VT7, the primary winding 8 and the primary winding 9 are connected with a thyristor 8, the primary winding 9 is connected with a thyristor VT9, a filter device LC1 is connected between the primary winding 1 and the primary winding 3, a filter device LC2 is connected between the primary winding 1 and the primary winding 2, a filter device LC3 is connected between the primary winding 2 and the primary winding 3, a filter device LC4 is connected between the primary winding 4 and the primary winding 6, a filter device LC5 is connected between the primary winding 4 and the primary winding 5, a filter device LC6 is connected between the primary winding 5 and the primary winding 6, a filter device LC7 is connected between the primary winding 7 and the primary winding 9, a filter device LC8 is connected between the primary winding 7 and the primary winding 8, a filter device LC9 is connected between the primary winding 8 and the primary winding 9, the control protection device QF1, QF2 and QF3 are further included, one end of the QF1 is connected with the thyristors VT1 and 3, the other end is connected with an output end of phase A, one end of the QF2 is connected with the thyristors VT4 and VT6, the other end is connected with an output end of phase B, one end of the QF3 is connected with the thyristors VT7 and VT9, the other end is connected with the C-phase output end, the primary winding 2, the primary winding 5 and the primary winding 8 are all connected with N lines, and also comprise a man-machine system device, a main control system device and a driving system device, the three-phase input voltage, the three-phase current and the three-phase output voltage, the three-phase current and each group of three-phase reactors T are all connected with a main control system device, the man-machine system device and the driving system device are both connected with the main control system device, the man-machine system device is a touch screen operation interface, the main control system device controls the three-phase reactor T to work through the driving system device, fig. 2-4 are interface diagrams of the man-machine system device of the present invention, including a voltage display interface and an operation control interface; the input voltage displayed by the front view comprises phase voltage, a working mode, a voltage regulation mode and fault protection, and the maximum value and the minimum value of the phase voltage of the input voltage are displayed in real time; the display output voltage comprises phase voltage, parameter setting and fault processing modes, the maximum value and the minimum value of the phase voltage of the output voltage are displayed in real time, the used electric quantity is displayed in real time, the multi-target voltage quality restoration device can further comprise a plurality of single-phase reactors T connected in series and a three-phase reactor consisting of three groups of single-phase reactors T, wherein each group of single-phase reactors T comprises a primary winding 1, a primary winding 2 and a primary winding 3 and is also in the protection range of the multi-target voltage quality restoration device.

The working principle is as follows: the invention provides a multi-target voltage quality repair device, when power is on or input voltage is equal to rated voltage, a main control system device controls VT2, VT5 and VT8 to be switched on, VT1, VT4, VT7, VT3, VT6 and VT9 to be switched off, a primary winding is in short circuit, so that the input voltage is equal to output voltage, when the input voltage is lower than the rated voltage, the main control system device controls VT2, VT5, VT8, VT3, VT6 and VT9 to be switched off, VT1, VT4 and VT7 to be switched on, so that the primary winding performs voltage compensation on a secondary, the output voltage reaches the rated voltage value, when the input voltage is higher than the rated voltage, the main control system device controls VT1, VT4, VT7, VT2, VT5, VT8 to be switched off, VT3, VT6 and VT9 to make the primary winding perform voltage cancellation on the secondary, and the output voltage reaches 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, and many modifications and improvements can be made by those skilled in the art without departing from the principle of the present invention, which should also be construed as the protection scope of the present invention.