CN103595057B - A kind of control system of chain type reactive power compensator - Google Patents
A kind of control system of chain type reactive power compensator Download PDFInfo
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- CN103595057B CN103595057B CN201310462120.9A CN201310462120A CN103595057B CN 103595057 B CN103595057 B CN 103595057B CN 201310462120 A CN201310462120 A CN 201310462120A CN 103595057 B CN103595057 B CN 103595057B
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The present invention relates to the control system of a kind of chain type reactive power compensator, belong to controlling electric energy technical field.The control system of the chain type reactive power compensator of the present invention includes master controller, lock unit, optical fiber transceiving unit and sub-power model controller, master controller is provided with generate modulating wave and the algorithm unit of pulse signal and logical block, to drive power model to open shutoff, thus realize the control of whole chain type reactive power compensator, the present invention is compatible centralized solution and distributing scheme two schemes.In the case of number of modules is less, use centralized solution, reduce number of fibers, thus reduce cost, and in the case of number of modules is more, use distributing scheme, improve synchronizing quality, there is stronger motility and high scalability.Multimode can be expanded to from single module control system simultaneously, and without changing general frame.
Description
Technical field
The present invention relates to the control system of a kind of chain type reactive power compensator, belong to controlling electric energy technical field.
Background technology
Along with the development of industrial technology, a large amount of Novel loads such as industrial arc, electric locomotive, rolling mill, whole
Stream bridge etc. is used in a large number, the severe exacerbation quality of power supply, adds various automatization, intelligentized complicated essence
Close equipment uses and has higher requirement the quality of power supply, improves the quality of power supply and is increasingly becoming the heat of research
Point.During chain type reactive power compensator one application form relatively simple typical case energy saver, have volume little,
Governing speed faster (< 10ms), export electric current not influence by voltage, preferable low pressure when line voltage is relatively low
The advantages such as reactive power characteristic, are paid attention to widely.Define from several kVar to the chain of Mvar levels up to a hundred
Formula reactive power compensator series.But, due to chain type reactive power compensator, it is by different power models (again
It is referred to as chain link) it is extended by cascade system, its calculating scale is closely related with module number.From low appearance
Amount expands to the device of high power capacity and generally requires and pulse is generated framework change in a large number, and the change of hardware companion
Along with many negative effects such as reliability, standardization, maintainabilitys.
Current pulse generates scheme, exists and concentrates on main control calculating system generation scheme, is called for short centralized
Scheme, and it is distributed to power model control system generation scheme both of which, it is called for short distributing scheme.Concentrate
The advantage of formula scheme is the reduction of issuing of synchronizing signal, decreases the optical fiber between power model and control system
Quantity, shortcoming is that the hardware requirement to computing system is higher, in the case of number of modules is more, needs greatly
Increase hardware spending, it is difficult to be extended.The advantage of distributing scheme is easily to be extended, and shortcoming is to need
The sequential of submodule is consistent to want synchronizing signal to ensure, synchronizing signal is easily subject to interference, causes and controls unsuccessfully.
Summary of the invention
It is an object of the invention to provide the control system of a kind of chain type reactive power compensator, to solve existing chain type
The problem that the control system of reactive power compensator can only use single control mode.
The present invention solves that above-mentioned technical problem provides the control system of a kind of chain type reactive power compensator, this control
System processed includes master controller, lock unit, optical fiber transceiving unit and N number of sub-power model controller, and N represents
Every phase power model number, master controller by lock unit and optical fiber transceiving unit respectively with each sub-power mould
Block controller is connected, and described master controller includes algorithm unit and logical block, algorithm unit and logical block
Parallel join, this control system can use centralized and distributing control program,
When this control system uses centerized fusion scheme, algorithm unit generates the modulation of 3N road according to all pressure algorithms
Ripple signal is also transferred to logical block, and logical block generates 3N road according to the 3N road modulating wave received
Pwm pulse signal, then by the 3N road pwm pulse signal of generation by optical fiber transceiving unit be respectively transmitted to
Corresponding N number of sub-power model controller, every sub-power model controller receives every mutually each 1 tunnel, 3 tunnels
Pwm pulse signal, every sub-power model controller drives corresponding merit according to receiving pwm pulse signal
Rate module opens shutoff；
When this control system uses distributing control program, algorithm unit generates 3 road modulation wave signals and by it
Sending logical block to, the 3 road modulation wave signals received are passed respectively by logical block by optical fiber transceiving unit
Giving corresponding N number of sub-power model controller, every sub-power model controller receives every mutually each 1 tunnel, 3 tunnels
Modulation wave signal, logical block generates 3 phase synchronization signals and sends every sub-merit to by lock unit simultaneously
Rate module controller, every sub-power model controller according to receive the modulation wave signal on every mutually each 1 tunnel, 3 tunnels with
3 phase synchronization signals generate respective pwm pulse signal, and every individual sub-power model controller generates according to self
Pwm pulse signal drives corresponding power model to open shutoff.
Described algorithm unit use dsp chip as hardware supported, this algorithm unit by its parallel interface with
Logical block in master control system is connected.
Described logical block uses fpga chip as hardware supported, is used for gathering external analog amount and opening into opening
Output is also uploaded to algorithm unit.
Described control system is when using centerized fusion scheme, and the lock unit in this control system is shielded
Cover.
All connect on every described sub-power model controller and have DC bus-bar voltage collection module and excess temperature shape
State acquisition module.
The computing formula of described phase-shifting carrier wave angle is:
Wherein N is the power modules quantity of every phase, and i is sub-power model numbering, and scope is from 1 to N.
The invention has the beneficial effects as follows: the control system of the chain type reactive power compensator of the present invention includes main control
Device, lock unit, optical fiber transceiving unit and sub-power model controller, be provided with in master controller generating
Modulating wave and the algorithm unit of pulse signal and logical block, to drive power model to open shutoff, thus realize
The control of whole chain type reactive power compensator, the present invention is compatible centralized solution and two kinds of sides of distributing scheme
Case.In the case of number of modules is less, use centralized solution, reduce number of fibers, thus reduce cost,
And in the case of number of modules is more, use distributing scheme, improve synchronizing quality, there is stronger motility
And high scalability.Multimode can be expanded to from single module control system simultaneously, and without changing general frame.
Accompanying drawing explanation
Fig. 1 is that the control system part of the chain type reactive power compensator of the present invention controls hardware capability block diagram；
Fig. 2 be in the embodiment of the present invention under centralized solution in master controller the operation logic of DSP with FPGA show
It is intended to；
Fig. 3 be in the embodiment of the present invention under distributing scheme in master controller the operation logic of DSP with FPGA show
It is intended to.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is further described.
The control system of the chain type reactive power compensator of the present invention is compatible centerized fusion scheme and distributing control
Scheme processed, in the case of number of modules is less, uses centerized fusion scheme, and in the more situation of number of modules
Under, use distributing control program.As it is shown in figure 1, the control system of the chain type reactive power compensator of the present invention
Including master controller, lock unit, optical fiber transceiving unit and N number of sub-power model controller, master controller leads to
Cross lock unit to be connected with each sub-power model controller respectively with optical fiber transceiving unit, described master controller
Including algorithm unit and logical block, algorithm unit and logical block parallel join.
The algorithm unit of master controller uses dsp chip, and dsp chip is provided with RS485 and ether Netcom
Letter interface, for correspondence with foreign country, is additionally provided with parallel interface, carries out parallel for the logical block with main controller
Communication, is provided with control algolithm module in dsp chip, calculated by this control algolithm module and generate modulating wave also
Passing to the logical block of master control system, for centralized solution, all pressures algorithm built-in for DSP can generate 3N
Road modulating wave (N is every phase power model quantity), for decentralized model, it is (every that DSP can generate 3 road modulating waves
Mutually each 1 tunnel).
Master controller logical block uses fpga chip as hardware supported, is used for gathering external analog amount and opening
Enter the amount of outputing and be uploaded to the algorithm part of master controller, for centralized solution, fpga chip according to
The N road modulating wave that DSP transmits, generates phase shift carrier signal, and by comparing carrier wave and modulating wave, generates N
Road pwm pulse signal also passes to sub-power model controller.
Optical fiber transceiving unit uses fibre optic plate, and the FPGA in master controller is by fibre optic plate and sub-power model control
Device processed communicates to connect, and lock unit is for providing synchronizing signal for sub-power model controller under decentralized model.
Sub-power model controller is used for DC bus-bar voltage and the collection of over-temperature condition information, and is uploaded to
Master controller, meanwhile, receives the signal that master controller issues, and under Centralized Mode, reception is pulse signal,
Under decentralized model, reception is modulation wave signal, under Centralized Mode, and the sub-direct root of power cell controller
Drive power model to open shutoff according to pulse, thus control whole chain type reactive power compensator, in decentralized model
Under, sub-power cell controls part according to modulating wave, and combines the voltage of self, uses Pressure and Control algorithm,
Generate the modulating wave of this sub-power cell, carry out phase-shifting carrier wave in conjunction with synchronizing signal；When using centerized fusion,
Lock unit is shielded.
The control division of labor of subsystems under hubbed mode
As in figure 2 it is shown, the DSP of master controller controls for outer voltage, current inner loop controls and grading ring control
System, wherein outer voltage controls is the dc bus total voltage for stable chain type reactive power compensator；In electric current
It is the size and Orientation for controlling reactive current that ring controls；Grading ring controls to be applicable to keep each power model
DC bus-bar voltage equilibrium.FPGA in master controller is mainly used in generating phase shift carrier wave and for modulating
Ripple compares generation pwm pulse.Each sub-power model controller is for driving according to pwm pulse
IGBT and transmission analog quantity and and quantity of state to master control system.
The control division of labor of the subsystems under decentralized model
As it is shown on figure 3, the DSP in master controller controls for outer voltage and current inner loop controls, main control
The FPGA of device is mainly used in generating synchronizing signal and transmission modulating wave to each sub-power model.Each sub-merit
Rate module controller is mainly used in: the synchronizing signal that (1) generates according to the FPGA in master controller generates phase shift
Carrier wave；(2) Pressure and Control generate independent modulating wave；(3) generate after phase shift carrier wave and modulating wave being compared
Pwm pulse；(4) IGBT is driven according to pwm pulse；(5) by the analog quantity collected and quantity of state
Reach master controller.
Claims (6)
1. the control system of a chain type reactive power compensator, it is characterised in that this control system includes master control
Device processed, lock unit, optical fiber transceiving unit and N number of sub-power model controller, N represents every phase power model
Number, master controller by lock unit and optical fiber transceiving unit respectively with each sub-power model controller phase
Even, described master controller includes algorithm unit and logical block, algorithm unit and logical block parallel join,
This control system can use centralized and distributing control program, when number of modules is less, uses centralized control
Scheme processed, to reduce number of fibers, when number of modules is more, uses distributing scheme；
When this control system uses centerized fusion scheme, in algorithm unit uses outer voltage control, electric current
Ring controls and grading ring controls, and generates 3N road modulation wave signal according to all pressing algorithm and is transferred to logic list
Unit, logical block generates 3N road pwm pulse signal according to the 3N road modulating wave received, then by generation
3N road pwm pulse signal is respectively transmitted by optical fiber transceiving unit and controls to corresponding N number of sub-power model
Device, every sub-power model controller receives the pwm pulse signal on every mutually each 1 tunnel, 3 tunnels, every sub-power
Module controller drives corresponding power model to open shutoff according to receiving pwm pulse signal；
When this control system uses distributing control program, algorithm unit uses outer voltage to control and in electric current
Ring controls, for generating 3 road modulation wave signals be transferred to logical block, logical block will receive 3
Road modulation wave signal is respectively transmitted to corresponding N number of sub-power model controller by optical fiber transceiving unit, each
Sub-power model controller receives the modulation wave signal on every mutually each 1 tunnel, 3 tunnels, and according to the modulating wave letter received
Number generating independent modulating wave by Pressure and Control, logical block generates 3 phase synchronization signals single by synchronizing simultaneously
Unit sends every sub-power model controller to, and every sub-power model controller is according to the synchronizing signal received
Generating phase shift carrier wave, independent modulating wave is also generated after phase shift carrier wave ratio by every sub-power model controller
Pwm pulse signal, drives corresponding power model to open shutoff according to the pwm pulse signal self generated.
The control system of chain type reactive power compensator the most according to claim 1, it is characterised in that described
Algorithm unit use dsp chip as hardware supported, this algorithm unit is by its parallel interface and main control system
Logical block in system is connected.
The control system of chain type reactive power compensator the most according to claim 2, it is characterised in that described
Logical block use fpga chip as hardware supported, be used for gathering external analog amount and input and output amount general
It is uploaded to algorithm unit.
The control system of chain type reactive power compensator the most according to claim 1, it is characterised in that described
Control system use centerized fusion scheme time, the lock unit in this control system is shielded.
The control system of chain type reactive power compensator the most according to claim 3, it is characterised in that described
Every sub-power model controller on all connects and has DC bus-bar voltage collection module and over-temperature condition collection mould
Block.
The control system of chain type reactive power compensator the most according to claim 5, it is characterised in that carrier wave
The computing formula of phase shift angle is:
Wherein N is the power model quantity of every phase, and i is power model numbering, and scope is from 1 to N.
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| CN108008668B (en) * | 2017-11-04 | 2020-10-20 | 国网江西省电力公司电力科学研究院 | Method for controlling time sequence of large-scale parallel data sampling based on DSP-FPGA |
| CN110138013B (en) * | 2019-06-18 | 2021-05-11 | 山东大学 | Micro-grid structure of parallel cascade converters and control method |
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| CN101807799B (en) * | 2010-04-27 | 2012-05-02 | 天津大学 | Super capacitor energy storage type power quality compensator |
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| 配电***级联型无功补偿装置的研究与实现;陈晶晶;《中国优秀硕士学位论文全文数据库》;20120715;第39-51页 * |
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Effective date of registration: 20221025 Address after: No. 4138, Sunshine Avenue, Xuchang Economic Development Zone, Henan 461000 Patentee after: Henan Xuji Power Electronics Co.,Ltd. Patentee after: XJ ELECTRIC Co.,Ltd. Patentee after: XI'AN XJ POWER ELECTRONICS TECHNOLOGY Co.,Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: XJ ELECTRIC Co.,Ltd. Patentee before: XI'AN XJ POWER ELECTRONICS TECHNOLOGY Co.,Ltd. |
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