CN202076799U - Magnetic control reactor system device controlled by PLC (programmable logic controller) - Google Patents
Magnetic control reactor system device controlled by PLC (programmable logic controller) Download PDFInfo
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- CN202076799U CN202076799U CN 201020571257 CN201020571257U CN202076799U CN 202076799 U CN202076799 U CN 202076799U CN 201020571257 CN201020571257 CN 201020571257 CN 201020571257 U CN201020571257 U CN 201020571257U CN 202076799 U CN202076799 U CN 202076799U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/30—Reactive power compensation
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Abstract
A magnetic control reactor system device controlled by a PLC (programmable logic controller) comprises a power transmitter, a PLC, a PC (personal computer), an isolating transformer-optical coupler isolator, a communication module and reactors. The magnetic control reactors are arranged on phases of a three-phase power network respectively, a current mutual inductor of each magnetic control reactor is connected with a current isolating sensor, the magnetic control reactors are connected with a thyristor, and a control end of the thyristor is connected with an output end of the isolating transformer-optical coupler isolator. The current isolating sensor is connected with the PLC which is connected with an EM231 expansion module in connection with the power transmitter, the PLC and the communication module are connected to the PC, a synchronizing signal input end of a voltage regulator is connected with the three-phase power network, and an input end of the voltage regulator is connected with a synchronizing signal circuit board. The magnetic control reactor system device integrates computing, pulsing and controlling, each magnetic control reactor is completely controlled by two pulses with 180-degree difference generated by the PLC, controlling procedure is reduced, operation time is saved, and cost of the device is reduced. Accordingly, the magnetic control reactor system device controlled by the PLC has excellent application prospect for places with imbalanced loads such as electrified railways and industrial and mining enterprises.
Description
Technical field
The utility model relates to a kind of reactor, relates to a kind of magnet controlled reactor control system specifically.
Background technology
Since the eighties, the reactive power compensation technology of China has begun rapid development, the reactive compensation system that all has from the various finally devices of incipient mechanical switching type is as SVC (Static Var Compensator), STATCOM (static reacance generator), classification type and magnet controlled shunt reactor (SCSR and MCSR) etc.Wherein since the nineties, there has been very big development in China magnet controlled SVC (MCR), and MCR has overcome the shortcoming of TCR reactor when keeping Controlled Reactor (TCR) advantage.Adopt magnet controlledly, make whole SVC system reliability high, 20 years non-maintaining.Use limit magnetic saturation advanced technology, the harmonic wave that is produced is significantly reduced, and active loss is low, response speed fast, electromagnetic-radiation-free.This makes MCR be applied to more and more in the various power circuits.
The MCR basic functional principle is to utilize the control direct current to control the saturation of iron core with the level and smooth reactor capacity of regulating continuously.Utilize line voltage itself after winding self coupling transformation, to obtain, need not add excitation power supply, the voltage-current characteristic approximately linear by thyristor rectifier.And MCR will work winding and control winding organically combine, help reducing loss, simplified structure.Utilization can be regulated the capacity of MCR effectively by the break-make of pulse control thyristor.For sinusoidal voltage, all will conducting behind the certain time-delay angle at positive and negative semiaxis, be symmetrical, so the pulse that needs 180 degree to differ.Magnet controlled reactor output current size depends on thyristor pilot angle α, and α is more little, and the Control current of generation is strong more, thereby reactor work iron core magnetic saturation degree is high more, and output current is big more.Therefore, change the thyristor pilot angle, but smooth adjustment reactor capacity.
The thyristor break-make control section of the MCR that put into operation in recent years all is to send one tunnel pulse by PLC to be divided into six tunnel (the front and back two-way differs 60 degree) of out of phase via the FPGA frequency division basically, and then controls conducting and the shutoff (the single-phase two-way of then getting mutual deviation 180 degree) of three MCR of three-phase.The advantage of this control device is that pulse control is simple, and the three-phase cost is relatively low, but its shortcoming is also many, makes a concrete analysis of as follows:
1, for three-phase MCR, adopt the FPGA frequency division can not realize phase-splitting control, can not effectively compensate for the three-phase imbalance load;
2, for single-phase, because adopted the FPGA device to cause pulse transmitter complexity, and for utilization fully of PLC, a whole set of control device cost is also higher;
3, the MCR that controls for employing FPGA frequency division can not be applied to the utmost point unbalanced load as the electric railway, its three-phase is a fixed phase difference, and for PLC control can realize differ adjustable, promptly three-phase can produce different capacity, and is different idle to produce.
Along with the development of China's economy and technology over the years, the proportion of the uncompensated load in China's electric load strengthens day by day, particularly as electric railway, industrial and mineral load.With the electric railway is example, because electric railway traction load has " four is non-" characteristic---non-linear (power rectifier equipment), non-sine (wave distortion), asymmetry (single-phase high-power load), noncontinuity (meritorious, reactive power impact is serious, voltage fluctuation is big), its operation can produce very big idle and negative-sequence current.But China does not also have a covering device to compensate idle preferably and negative-sequence current now.This control system is exactly the idle and negative sequence compensation control system of a cover that develops at this utmost point uncompensated load, and native system is adjusted compensation capacity according to the Steinmetz principle of load, can receive good compensation effect.
Summary of the invention
At the defective that existing compensation arrangement exists, the utility model provides a kind of realization three-phase phase splitting compensation, saves running time, and device is simplified, a kind of PLC control magnet controlled reactor system and device that cost is low.
Solving the problems of the technologies described above the concrete technical measures of being taked is: a kind of PLC control magnet controlled reactor system and device is characterized in that: are made up of power transducer, PLC, PC, isolating transformer-optical coupling isolator, communication module and reactor six major parts.Three phase network is provided with three magnet controlled reactors, whenever, be respectively 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor on mutually, the current transformer of 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor connects corresponding electric current isolation sensor respectively, the voltage regulator synchronous signal input end connects three phase network, output termination synchronous signal circuit plate.The 1# magnet controlled reactor, the 2# magnet controlled reactor, 3# magnet controlled reactor and thyristor link, its break-make is controlled by thyristor, the thyristor control end connects on the output of isolating transformer-optical coupling isolator, the 1# magnet controlled reactor, the 2# magnet controlled reactor, the current transformer slotted line electric current of 3# magnet controlled reactor is connected respectively on the isolating transformer, the signal input part of isolating transformer-optical coupling isolator connects 1#PLC respectively, 2#PLC, the signal output part of 3#PLC, the last connection of 1#PLC LA# electric current isolation sensor and LAB# electric current isolation sensor, the last connection of 2#PLC LB# electric current isolation sensor and LBC# electric current isolation sensor, the last connection of 3#PLC LC# electric current isolation sensor and LCA# electric current isolation sensor, 1#PLC, 2#PLC, 3#PLC connects the EM231 expansion module respectively, the EM231 expansion module connects the 1# power transducer respectively, the 2# power transducer, the 3# power transducer, by the AB after the processing of synchronous signal circuit plate, BC, voltage synchronizing signal and the 100kHz counting pulse signal of CA connect 1#PLC respectively, 2#PLC, the signal input part of 3#PLC, 1#PLC, 2#PLC, 3#PLC connects PC respectively, and communication module connects on the PC.
The beneficial effects of the utility model:
1, the control centre of native system is Siemens S7-200224XP CN type PLC, and is connected to the expansion module of EM235CN type, and collection calculates, sends out pulse, is controlled in one.Because PLC sends the pulses that two-way differs 180 degree, can intactly control a MCR, saved needs the process finished with the FPGA frequency division in the past, saves running time, the reduction installation cost.Install as compared with the past more rationally with comprehensive for the application of PLC.Increase the integrated level of device, reduced the complexity of control flow.
2, this control system can be applicable to the three-phase imbalance load, realizes the three-phase phase splitting compensation, three PLC phase-splitting power controlling factors just, Comprehensive Control imbalance.Has good application prospects for electric railway, the extremely unbalanced occasion of industrial and mining enterprises' even load.
Description of drawings
Fig. 1 is a three-phase imbalance compensation control system electrical block diagram.
Fig. 2 is the control chart when being applied to the electric railroad compensation.
Embodiment
A kind of magnet controlled reactor PLC control system device, as shown in Figure 1, form by power transducer, PLC, PC, isolating transformer-optical coupling isolator, communication module and reactor (MCR) six major parts, various devices all have the product of all size model, select for use according to the technical indicator of control during use, and carry out the circuit connection according to device wiring explanation.
Three phase network is provided with three magnet controlled reactors, whenever, be respectively 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor on mutually, the current transformer of 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor connects corresponding electric current isolation sensor respectively, the voltage regulator synchronous signal input end connects three phase network, output termination synchronous signal circuit plate.1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor and thyristor link, its break-make is controlled by thyristor, the thyristor control end connects on output LA, the LB and LC of isolating transformer-optical coupling isolator, the current transformer slotted line electric current of 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor is connected respectively on isolating transformer LAB, LBC and the LCA, the signal input part of isolating transformer-optical coupling isolator connects the signal output part of 1#PLC, 2#PLC, 3#PLC respectively, and isolating transformer-optical coupling isolator is the burst process device.PLC adopts Siemens S7-200224XPCN type CPU and an EM231CN type expansion module.PLC emission two-way differs the pulse of 180 degree.EM231CN type expansion module is the analog quantity processing module, be mainly used in analog quantity information and the current and voltage quantities that the received power acquisition module transmits and pass the analog quantity information of coming via isolation sensor, and in PLC, be reduced into corresponding actual value, calculate the amount that will compensate then, and then the angle of flow of adjusting MCR, send corresponding pulse.The last connection of PLC1 electric current isolation sensor LA and electric current isolation sensor LAB, the last connection of PLC2 electric current isolation sensor LB and electric current isolation sensor LBC, the last connection of PLC3 electric current isolation sensor LC and electric current isolation sensor LCA.PLC1, PLC2, PLC3 connect the EM231 expansion module respectively, and the EM231 expansion module connects power transducer 1, power transducer 2, power transducer 3, power transducer model C W/CQ respectively, adopt the specified input of alternating current 220V voltage, 5A electric current.It is bigger to consider that line electricity fails to be convened for lack of a quorum, and between circuit and power transducer current transformer is installed, and model is LQJ-10.The power inverter wiring as shown in Figure 2.The analog quantity of 4～20mA is all adopted in meritorious and idle output, and promptly the switch among the DIP SWITCH 1,5,7 is opened, and other is closed.AB, the BC, the voltage synchronizing signal of CA and signal input part I0.0 and the I0.3 that the 100kHz counting pulse signal connects PLC1, PLC2, PLC3 respectively that send by the synchronous signal circuit plate.PLC1, PLC2, PLC3 connect PC respectively, and communication module connects on the PC, and communication module adopts GSM/GPRS
The MODEM/DTU communication module, communication module is transmitted into signal on the remote operation machine, and remote visible and controlled function are arranged.
[0019] be example with the railway uncompensated load, as shown in Figure 2.Three magnet controlled reactor PLC control system devices connect a main control unit and two respectively from control device, and main control unit all is connected with PC with acquisition module from control device with two.Compensation for three-phase unbalance system, its control method is as follows: three PLC phase-splitting power controlling factors, Comprehensive Control negative phase-sequence unsymmetrical current, PLC and upper PC communicate, and with various parameter transmission and calculate the capacity of each magnet controlled reactor, reach the purpose of phase-splitting control.
Claims (1)
1. a PLC control magnet controlled reactor system and device is characterized in that: are made up of power transducer, PLC, PC, isolating transformer-optical coupling isolator, communication module and reactor six major parts; Three phase network is provided with three magnet controlled reactors, whenever is respectively 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor on mutually; The current transformer of 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor connects corresponding electric current isolation sensor respectively; The voltage regulator synchronous signal input end connects three phase network, output termination synchronous signal circuit plate; 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor and thyristor link, and its break-make is controlled by thyristor; The thyristor control end connects on the output of isolating transformer-optical coupling isolator; The current transformer slotted line electric current of 1# magnet controlled reactor, 2# magnet controlled reactor, 3# magnet controlled reactor is connected respectively on the isolating transformer; The signal input part of isolating transformer-optical coupling isolator connects the signal output part of 1#PLC, 2#PLC, 3#PLC respectively; The last connection of 1#PLC LA# electric current isolation sensor and LAB# electric current isolation sensor, the last connection of 2#PLC LB# electric current isolation sensor and LBC# electric current isolation sensor, the last connection of 3#PLC LC# electric current isolation sensor and LCA# electric current isolation sensor; 1#PLC, 2#PLC, 3#PLC connect the EM231 expansion module respectively, and the EM231 expansion module connects 1# power transducer, 2# power transducer, 3# power transducer respectively; By AB, BC, the voltage synchronizing signal of CA and the signal input part that the 100kHz counting pulse signal connects 1#PLC, 2#PLC, 3#PLC respectively after the processing of synchronous signal circuit plate; 1#PLC, 2#PLC, 3#PLC connect PC respectively, and communication module connects on the PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020571257 CN202076799U (en) | 2010-10-21 | 2010-10-21 | Magnetic control reactor system device controlled by PLC (programmable logic controller) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201020571257 CN202076799U (en) | 2010-10-21 | 2010-10-21 | Magnetic control reactor system device controlled by PLC (programmable logic controller) |
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| CN202076799U true CN202076799U (en) | 2011-12-14 |
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| CN 201020571257 Expired - Fee Related CN202076799U (en) | 2010-10-21 | 2010-10-21 | Magnetic control reactor system device controlled by PLC (programmable logic controller) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790400A (en) * | 2012-08-08 | 2012-11-21 | 武汉大学 | Reactive negative sequence current mixed synergic control device and method for electrified railway |
| CN113339184A (en) * | 2021-06-06 | 2021-09-03 | 中国长江电力股份有限公司 | Active power control device and processing method for speed regulator of giant hydroelectric generating set |
-
2010
- 2010-10-21 CN CN 201020571257 patent/CN202076799U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790400A (en) * | 2012-08-08 | 2012-11-21 | 武汉大学 | Reactive negative sequence current mixed synergic control device and method for electrified railway |
| CN102790400B (en) * | 2012-08-08 | 2015-04-15 | 武汉大学 | Reactive negative sequence current mixed synergic control device and method for electrified railway |
| CN113339184A (en) * | 2021-06-06 | 2021-09-03 | 中国长江电力股份有限公司 | Active power control device and processing method for speed regulator of giant hydroelectric generating set |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20171021 |
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| CF01 | Termination of patent right due to non-payment of annual fee |