CN204886771U - Flexible control regulator of distribution transformer tap - Google Patents
Flexible control regulator of distribution transformer tap Download PDFInfo
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- CN204886771U CN204886771U CN201520493356.3U CN201520493356U CN204886771U CN 204886771 U CN204886771 U CN 204886771U CN 201520493356 U CN201520493356 U CN 201520493356U CN 204886771 U CN204886771 U CN 204886771U
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- 230000009286 beneficial effect Effects 0.000 description 3
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- 238000012544 monitoring process Methods 0.000 description 3
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Abstract
The utility model relates to a flexible control regulator of distribution transformer tap, the excitation branch is taken a percentage externally, regulator and the separation of transformer body, including human machine system, with human machine system carries out control protection system and permanent magnetism switch circuit that the communication is connected, control protection system basis permanent magnetism switch circuit's signal feedback triggers the drive permanent magnetism switch circuit, the control protection system includes the analog signal modulate circuit, the analog signal modulate circuit passes through the AD converter and connects DSP nuclear core, DSP nuclear core and switching value input/output circuit link to each other and carry out data communication, still include with the optoelectronic isolation drive circuit that switching value input/output circuit links to each other, and the signal is repaid extremely to switching value input circuit, switch quantity output circuit, light triggering signal circuit and input light that optoelectronic isolation drive circuit connects the light of switching value input/output circuit is repaid signal circuit and is carried out the communication port of communicating with the ethernet.
Description
Technical field
The utility model relates to a kind of distribution transformer tap Flexible Control regulator.
Background technology
Distribution transformer on-load voltage regulation improves distribution economic operation level, ensures the important means of supply power voltage quality.Current distribution transformer loaded automatic voltage-regulating adopts mechanical type to have the automatic shunting switch in contact usually, must be arranged on independently in fuel tank, and be not suitable for frequent operation when this switch changes tap because producing electric arc.Following problem is mainly there is in operation:
1, on-load voltage regulating device failure rate is high: due to conventional on-load voltage regulating device complicated in mechanical structure, have pollution to transformer oil, easy fault in operation, the shortcoming that maintenance workload is large.Through investigating, current Handan Power Supply Co., Ltd is in-service a year distribution transformer 13, answers all unrealized on-load voltage regulation of plant failure.
2, on-load voltage regulating device Disposing rate is low, certain customers' supply power voltage low qualified: although strengthened the dynamics of investment to power distribution network in recent years, but still there is distribution transformer and to layout unreasonable, the problem such as power distribution network is old, radius of electricity supply is long, electric power-feeding structure is unreasonable, cause customer power supply rate of qualified voltage on the low side, and can not solve completely in a short time.Meanwhile, certain customers' load presents day or season cyclic variation, does not take on-load voltage regulation mode to be difficult to meet supply power voltage yield requirement.
3, distribution transformer configuration reactive power compensator runs uneconomical.For promoting power distribution network economic operation level, distribution transformer collocation in successive steps reactive power compensator, under not having real-time Voltage Cortrol to coordinate, reactive power compensator is difficult to guarantee compensation effect.
In a word, just current power distribution network ruuning situation, realizes on-load voltage regulation to part power distribution station, is promote supply power voltage qualification rate, improves the necessary means of economic operation level.But due to fault easy in existing voltage adjustment of on-load plant running, the shortcoming that maintenance workload is large has the major technology bottleneck carrying distribution transformer and be difficult to popularize in power distribution network.Research and develop a kind of novel on-load voltage regulating device to solve the problem and become inevitable.
In recent years, domestic and international technical specialist had developed the on-load tap changer of the auxiliary switch of multiple technologies, solved the problem that switching branch joint produces electric arc.But structure all exists shunting switch mechanical adjustment speed slow, frequent operation or power electronic device can not control complicated, insecure situation.Due to performance and cost reason, above technology all can not be applicable to the requirement of distribution transformer automatic Regulation very well.
Utility model content
For the problems referred to above, the utility model provides a kind of distribution transformer tap Flexible Control regulator.
For reaching above-mentioned utility model object, the utility model distribution transformer tap Flexible Control regulator, comprise man-machine system, Control protection system that communication is connected and permanent-magnetic switching circuit is carried out with described man-machine system, described Control protection system triggers according to the signal feedback of described permanent-magnetic switching circuit and drives described permanent-magnetic switching circuit, described Control protection system comprises analog signal conditioner circuit, described analog signal conditioner circuit connects DSP core core by AD converter, described DSP core core is connected with On-off signal output circuit and carries out data communication, also comprise the photoelectric isolating driving circuit be connected with described On-off signal output circuit, described photoelectric isolating driving circuit connecting valve amount input interface, output switch parameter interface, also comprise input light return signal to the light return signal circuit of described On-off signal output circuit and carry out with Ethernet the port that communicates, voltage and current signal is through PT and CT, enter analog signal conditioner circuit, then AD converter is added to, carry out DSP process, process after the analog signal of AD sampling, according to the control calculated, Protection parameters, compare and export Control protection actuating signal after judging voltage, branch current physical quantity, and when forming band, then target logout uploads man-machine system.
Further, described port comprises the RS232 port for debugging, the RS232/485 port for supervisory control system communication.
Further, between Control protection system and permanent-magnetic switching circuit, adopt light to get in touch with every switching value, complete control and state feedback.
Beneficial effect:
Compared with existing correlation technique, the utility model has following beneficial effect:
The utility model distribution transformer tap Flexible Control regulator adopts Direct Action Type permanent-magnetic switching mechanism, Direct Action Type permanent-magnetic switching is easy to realize computer control, it is simple for structure to have, turn off and conducting converts soon, by vacuum chamber arc extinguishing in conversion process, the durable advantage such as reliably.Cost is low, the life-span is grown, can frequently regulate, high reliability to it can be used as the on load tap changer of transformer to have.On-load voltage regulating device can be supporting with distribution transformer producer, also can plug-inly independently install, be convenient to have in-service No-load changer three (or five) tap excitation distribution transformer carry transformation, can according to the fluctuation of supply power voltage, the output voltage of automatic adjustment transformer, enable distribution transformer output voltage all the time near its rated voltage, meet the requirement of GB quality of power supply voltage levvl.Relative to existing voltage adjustment of on-load technology, the utility model adopts Flexibility Control Technique, have governing speed fast, can frequent movement, non-maintaining, reliable technical characterstic; Voltage settles regulative mode at one go, and the life-span is equivalent to load tapchanging 2 ~ 3 times of vacuum switch; Put into operation, can effectively improve rate of qualified voltage level, meet social need for electricity.
Accompanying drawing explanation
Fig. 1 is the control elementary diagram signal of the utility model portion joint pressure regulation;
Fig. 2 is the protective circuit theory diagram of the utility model Regulation Control device;
Fig. 3 is the general frame figure of the utility model device;
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, the present embodiment distribution transformer tap Flexible Control regulator, comprise man-machine system, Control protection system that communication is connected and permanent-magnetic switching circuit is carried out with described man-machine system, described Control protection system triggers according to the signal feedback of described permanent-magnetic switching circuit and drives described permanent-magnetic switching circuit, described Control protection system comprises analog signal conditioner circuit, described analog signal conditioner circuit connects DSP core core by AD converter, described DSP core core is connected with On-off signal output circuit and carries out data communication, also comprise the photoelectric isolating driving circuit be connected with described On-off signal output circuit, and the switching value input circuit that described photoelectric isolating driving circuit connects, switching value output circuit, light triggering signal circuit and input light return signal to described On-off signal output circuit light return signal circuit and carry out with Ethernet the port that communicates,
Voltage and current signal is through PT and CT; enter analog signal conditioner circuit; then AD converter is added to; carry out DSP process; process after the analog signal of AD sampling; according to the control calculated, Protection parameters, compare and export Control protection actuating signal after judging voltage, branch current physical quantity, and when forming band, then target logout uploads man-machine system.
Further, described port comprises the RS232 port for debugging, the RS232/485 port for supervisory control system communication.
Further, between Control protection system and permanent-magnetic switching circuit, adopt light to get in touch with every switching value, complete control and state feedback.
Direct Action Type permanent-magnetic switching and power electronics drive flexible combination to complete tap regulator, to be included under afterbody, middle part, end different distribution transforming tap mode the circulation theory analysis in transfer process automatically; The type selecting of current-limiting resistance; Vacuum bubbles coordinates type selecting with permanent magnet mechanism, and power electronic device and permanent magnet mechanism phase control system are developed perfect, electromechanical linkage structure etc.As shown in Figure 2, the control elementary diagram schematic diagram of portion joint pressure regulation, wherein K1, K3, K4, T2 are direct acting structure permanent-magnetic switching.
Voltage control system comprises phase place monitoring and power driving circuit, large power energy storage circuit, condition monitoring and protective circuit, and their organic assembling realizes operating passing zero function.On the basis of each electricity of Measurement accuracy, calculate each controlled quentity controlled variable parameter, export control and protection order according to design logic, control the switching of tap branch road, and communicate with host computer according to communicating requirement.
Control protection system adopts structure as shown in Figure 3, and voltage and current signal, through PT and CT, enters analog signal conditioner circuit, is then directly added to AD input channel.DSP processes after the analog signal of AD sampling, calculates control, Protection parameters etc.After comparing and judging relevant physical quantity (voltage, branch current), export Control protection actuating signal etc., and when forming band, then target logout uploads man-machine system.SCI1 makes RS232 port, and for debugging, SCI2 makes RS232/485 port or CAN interface or Ethernet interface, for communicating with supervisory control system.Adopt light to get in touch with every switching value between control system and phased switch, complete control and state feedback.
Control system practical function is as follows:
Alternating voltage inputs, and electric current exchanges input;
Light return input and On-off signal;
Relay normally open node exports and the normally closed node of relay exports;
Light trigging control drive part, it is synchronously outer that drive part exports synchronously;
Event stores: nearest 64 action event;
Voltage, the self-correcting of current effective value software;
Have overvoltage protection and under-voltage protection function, overvoltage protection has back stagnant voltage and adjusts;
Can control by manual switching;
RS485/232 interface or Ethernet interface communicate with supervisory control system.
Monostable permanent-magnetic switching basic machine completes deciliter function of high-tension circuit, its great advantage abandons numerous and diverse, that reliability is low spring operation (or electromagnetism) mechanism, adopt monostable permanent magnetism and linear running structure, its stroke is little, without switch spring, compact conformation, the time delay of switch motion is short, operation dispersiveness shortens greatly (generally can accomplish in 0.1ms), and the life-span of switching manipulation improves (500,000 times) greatly.
Monostable permanent-magnetic switching drive circuit completes switch drive, the phase place monitoring of permanent-magnetic switching and the effect of IGBT drive circuit are measuring voltage, electric current, detect it and cross zero phase, send control command by logic and buffer circuit, the bidirectional pulse that IGBT drive circuit can realize high-voltage large current exports.Phase place supervisory circuit provides real time correction function, solves the dispersion problem that the factors such as variations in temperature, switch are aging, electric source disturbance are brought, and by controlling compensate function correction time, ensures the time controllable precise of switch deciliter, can accomplish ± 0.1ms in.
The utility model be should be understood that; above-described embodiment; further detailed description has been carried out to the purpose of this utility model, technical scheme and beneficial effect; these are only embodiment of the present utility model; and be not used in restriction the utility model; every within spiritual principles of the present utility model; done any amendment, equivalent replacement, improvement etc.; all should be included within protection range of the present utility model, the protection range that protection range of the present utility model should define with claim is as the criterion.
Claims (3)
1. a distribution transformer tap Flexible Control regulator, it is characterized in that, excitation divides tap external, regulator is separated with transformer body, comprise man-machine system, Control protection system that communication is connected and permanent-magnetic switching circuit is carried out with described man-machine system, described Control protection system triggers according to the signal feedback of described permanent-magnetic switching circuit and drives described permanent-magnetic switching circuit, described Control protection system comprises analog signal conditioner circuit, described analog signal conditioner circuit connects DSP core core by AD converter, described DSP core core is connected with On-off signal output circuit and carries out data communication, also comprise the photoelectric isolating driving circuit be connected with described On-off signal output circuit, described photoelectric isolating driving circuit connecting valve amount input interface, output switch parameter interface, also comprise input light return signal to the light return signal circuit of described On-off signal output circuit and carry out with Ethernet the port that communicates,
Voltage and current signal is through PT and CT; enter analog signal conditioner circuit; then AD converter is added to; carry out DSP process; process after the analog signal of AD sampling; according to the control calculated, Protection parameters, compare and export Control protection actuating signal after judging voltage, branch current physical quantity, and when forming band, then target logout uploads man-machine system.
2. distribution transformer tap Flexible Control regulator according to claim 1, is characterized in that, described port comprises the RS232 port for debugging, the RS232/485 port for supervisory control system communication.
3. distribution transformer tap Flexible Control regulator according to claim 1, is characterized in that, adopt light to get in touch with every switching value between Control protection system and permanent-magnetic switching circuit, completes control and state feedback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520493356.3U CN204886771U (en) | 2015-07-09 | 2015-07-09 | Flexible control regulator of distribution transformer tap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520493356.3U CN204886771U (en) | 2015-07-09 | 2015-07-09 | Flexible control regulator of distribution transformer tap |
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| CN204886771U true CN204886771U (en) | 2015-12-16 |
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| CN201520493356.3U Expired - Fee Related CN204886771U (en) | 2015-07-09 | 2015-07-09 | Flexible control regulator of distribution transformer tap |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914742A (en) * | 2016-05-09 | 2016-08-31 | 国家电网公司 | On-load voltage regulation device control system and method based on flexible control technology |
| CN105939016A (en) * | 2016-05-05 | 2016-09-14 | 国家电网公司 | Inrush-current-free multi-group reactive compensation complete equipment |
| CN106124810A (en) * | 2016-08-17 | 2016-11-16 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of emulator simulating PMG alternating current power supply |
| CN106324409A (en) * | 2016-11-28 | 2017-01-11 | 国网山东省电力公司济宁供电公司 | Transformer tap online display device and transformer tap online display system |
-
2015
- 2015-07-09 CN CN201520493356.3U patent/CN204886771U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105939016A (en) * | 2016-05-05 | 2016-09-14 | 国家电网公司 | Inrush-current-free multi-group reactive compensation complete equipment |
| CN105914742A (en) * | 2016-05-09 | 2016-08-31 | 国家电网公司 | On-load voltage regulation device control system and method based on flexible control technology |
| CN106124810A (en) * | 2016-08-17 | 2016-11-16 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of emulator simulating PMG alternating current power supply |
| CN106324409A (en) * | 2016-11-28 | 2017-01-11 | 国网山东省电力公司济宁供电公司 | Transformer tap online display device and transformer tap online display system |
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Granted publication date: 20151216 |