CN206595718U - Optical fibre ring control system for SVG multi-machine parallel connections - Google Patents
Optical fibre ring control system for SVG multi-machine parallel connections Download PDFInfo
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- CN206595718U CN206595718U CN201720302289.1U CN201720302289U CN206595718U CN 206595718 U CN206595718 U CN 206595718U CN 201720302289 U CN201720302289 U CN 201720302289U CN 206595718 U CN206595718 U CN 206595718U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The utility model is related to a kind of optical fibre ring control system for SVG multi-machine parallel connections, including：SVG controllers, voltage transformer, the current transformer and telecommunication optical fiber of detecting system electric current for detecting line voltage, voltage transformer summation current transformer output end are connected to the input of SVG controllers；One SVG controller is set to master controller, remaining SVG controller is set to from controller, the current signal of master controller collection current transformer output, master controller from controller by optical fiber with being in turn connected into ring network, master controller transmits total reactive power and control instruction, SVG controllers control SVG output reactive powers to from controller.SVG controllers connect cyclization by optical fiber, and the limitation of the uncontrolled device optical fiber interface number of number of units in parallel, autobalance reactive power output ensures the reliability of a whole set of compensation system to greatest extent.Optical fiber line is extremely simple, simplifies site operation.
Description
Technical field
The present invention relates to a kind of SVG multi-machine parallel connections operation control system.
Background technology
SVG（STATCOM）, can be quickly continuous for the state-of-the-art reactive power compensation technology of power system at this stage
Output capacitive reactive power or lagging reactive power, pass through the control to System Reactive Power, realize stable line voltage, improve
System power factor, ensures power system stability, efficient operation.
Due to being limited at present by IGBT technologies, SVG equipment individual capacity is little, with the continuous increasing of power system capacity
Plus, power system is also continuously increased to the capacity requirement of reactive power compensator, occurs that many SVG equipment are connected in parallel on use at the scene
One section of bus run, this be accomplished by SVG equipment can parallel running, it is necessary to which each SVG of parallel running can be balanced with automated power.
Chinese patent 201110213027.5 proposes the SVG device parallel Operation Control system communicated based on high speed fibre
And its method.This method can realize multi-machine parallel connection, but the optical fiber connection between SVG device is especially complex.Every two SVG it
Between be required for multifiber, during 2 parallel connections connect 2 optical fiber, during 3 parallel connections connect 6 optical fiber, during 4 parallel connections connect 12
Optical fiber, connects 20 optical fiber during 5 parallel connections, while control unit interface limits the number of units of parallel connection.
Chinese patent 201110188074.9 proposes the master ＆ slave control system and method for APF/SVG parallel runnings.
This method can realize multi-machine parallel connection, change compensation method and use independent controller, control of each APF/SVG equipment in master controller
Compensated under system.Master controller needs to be connected two optical fiber with every equipment, number of units main controller interface number in parallel
Limitation, and master controller damage, all devices are stopped.
The content of the invention
There is provided simple, the efficient SVG parallel runnings optical fibre ring control of one kind for above-mentioned deficiency of the invention for prior art
System processed, makes the SVG number of units of parallel running unrestricted, and power-balance between SVG is realized by efficient algorithm.
For the optical fibre ring control system of SVG multi-machine parallel connections, including：SVG controllers, detect line voltage voltage it is mutual
The current transformer and telecommunication optical fiber of sensor, detecting system electric current, voltage transformer summation current transformer output end are connected to
The input of SVG controllers；One SVG controller is set to master controller, and remaining SVG controller is set to from controller, main control
The current signal of device collection current transformer output, master controller is main with being in turn connected into ring network from controller by optical fiber
Controller transmits total reactive power and control instruction, SVG controllers control SVG output reactive powers to from controller.
Described SVG controllers, including DSP, FPGA, analog quantity conditioning unit, fibre optical transmission interface, optical fiber connect
Mouthful, fibre optical transmission interface unit and optical fiber reception interface unit be connected with FPGA, and analog quantity conditioning unit is connected with DSP, DSP and
FPGA is connected, and the fibre optical transmission interface unit of upper SVG device controllers passes through optical fiber and the optical fiber of next SVG device controllers
Reception interface unit is connected.
The control method of the present invention, comprises the following steps：
A. it is master controller to set a SVG controller, and it is, from controller, to set each SVG to set other SVG controllers
The power coefficient of controller；
B. master controller calculates total reactive power needed for compensation power network using line voltage galvanometer；
C. total reactive power signals are sent terminal by optical fiber and are sent to first from controller by master controller；
E. first from controller by total reactive power signals by optical fiber send terminal be sent to it is next from controller,
F. repeat step e, to the last from controller；
G. it is last that total reactive power signals are sent to master controller by optical fiber transmission terminal from controller;
H. total reactive power is multiplied by each SVG controllers with respective power coefficient obtains the mesh of reactive power output
Scale value；
I.SVG controllers control power cell output reactive power.
It is set as that the SVG controllers of slave while total reactive power and control instruction is received, send these data
To next slave, all slave SVG controllers in such ring can receive total reactive power and control instruction.Optical fiber
Console controller in ring and from machine controller, total reactive power is multiplied by respective power coefficient obtaining each SVG needs output
Reactive power.Power coefficient is the volume of each SVG settable parameter, each SVG rated power divided by all parallel running SVG
Determine the summation of power, obtain each SVG power coefficient.K1=Qn1 ÷ (Qn1+ Qn2 ... .. QnN), k1 represents First
SVG " power coefficient ", Qn1 represents First SVG rated power, and QnN represents N platforms SVG rated power.
The present invention makes the SVG controllers of parallel running connect cyclization by optical fiber, and the uncontrolled device optical fiber of number of units in parallel connects
The limitation of mouth number.The SVG of different capacity grade can be used in ring, and autobalance reactive power is exported, it is rational to utilize
Each SVG exerts oneself.Any SVG in ring can be set to main frame, and slave failure does not influence other SVG equipment to run, main
Machine failure by resetting the quick restoration and compensation of main frame, can ensure the reliability of a whole set of compensation system to greatest extent.This
The fiber annular control system proposed is invented, optical fiber line is extremely simple, the number of parallel fiber optic and SVG in parallel number of units phase
Together, it greatly simplify site operation.
Brief description of the drawings
Fig. 1 is 4 SVG parallel running fiber optic communication line schematic diagrames；
Fig. 2 is SVG device controllers；
Fig. 3 is system voltage transformer and system power transformer connection diagram；
Fig. 4 is SVG device interior composition frame charts.
Embodiment
As shown in figure 1, be 4 SVG equipment parallel running optical fibre ring control systems, including 4 SVG equipment and 4 light
Fibre, if the SVG number of units of parallel running is N, the quantity of optical fiber is similarly N.Pass through optical fiber transmission compensation electricity between each SVG equipment
The total reactive power needed is netted, wherein one SVG controller in fiber optic loop is set to main frame, No. 1 SVG controller is master control
Device processed, No. 2 SVG controllers, No. 3 SVG controllers, No. 4 SVG controllers are set to from controller.The TX ends of No. 1 SVG controller
Son is connected to the RX terminals of No. 2 SVG controllers by optical fiber, and the TX terminals of No. 2 SVG controllers are connected to next SVG control
The RX terminals of device processed, the TX terminals of last 4th SVG controller are connected to the RX terminals of No. 1 SVG controller by optical fiber, this
4 SVG controllers of sample connect cyclization by optical fiber.
The voltage transformer of line voltage and the current transformer of detecting system electric current are detected, their output end is connected to
All SVG controllers, as shown in Figure 3.
SVG controllers include：Digital signal processor DSP, programmable gate array chip FPGA, analog quantity modulate circuit,
Fibre optical transmission terminal, all the way optical fiber receiving terminal all the way, as shown in Figure 2.
SVG equipment such as Fig. 4, is mainly made up of controller, touch-screen, power cell, reactor.
When SVG controllers are as master controller, line voltage, system power signal are input to analog quantity modulate circuit, mould
Analog quantity modulate circuit is connected with digital signal processor DSP, and digital signal processor DSP is carried out to line voltage, current signal
Sampling, analog-to-digital conversion, then calculate the total reactive power and grid-connected lock phase data needed for compensation system.Digital signal processor
DSP is connected with programming gate array chip FPGA, and total reactive power of calculating is transferred to programmable gate array chip FPGA.Can
Programming gate array chip FPGA is connected with fibre optical transmission terminal, and programmable gate array chip FPGA leads to after total reactive power is encoded
Cross fibre optical transmission terminal and pass to the next optical fiber receiving terminal from controller.Programmable gate array chip FPGA and light all the way
Fine receiving terminal is connected, and after the coding information that programmable gate array chip FPGA receives optical fiber receiving terminal is decoded, is transmitted to
Digital signal processor DSP.
SVG controllers as from controller when, line voltage, system power signal are input to analog quantity modulate circuit, mould
Analog quantity modulate circuit is connected with digital signal processor DSP, and digital signal processor DSP is sampled to line voltage, modulus
Conversion, then calculates grid-connected required lock phase data.Programmable gate array chip FPGA is connected with optical fiber receiving terminal all the way,
After the coding information decoding that programmable gate array chip FPGA receives optical fiber receiving terminal, it is compensated total needed for power network
Reactive power.Programmable gate array chip FPGA is connected with digital signal processor DSP, and programmable gate array chip FPGA is solution
Total reactive power needed for compensation power network after code is transferred to digital signal processor DSP.
Claims (2)
1. for the optical fibre ring control system of SVG multi-machine parallel connections, it is characterized in that：Including SVG controllers, detect line voltage
The current transformer and telecommunication optical fiber of voltage transformer, detecting system electric current, voltage transformer summation current transformer output end
It is connected to the input of SVG controllers；One SVG controller is set to master controller, and remaining SVG controller is set to from controller,
The current signal of master controller collection current transformer output, master controller is circularized with being sequentially connected from controller by optical fiber
Net, master controller transmits total reactive power and control instruction, SVG controllers control SVG output reactive powers to from controller.
2. the optical fibre ring control system according to claim 1 for SVG multi-machine parallel connections, it is characterized in that：The SVG controls
Device processed include DSP, FPGA, analog quantity conditioning unit, fibre optical transmission interface, optical fiber receiving interface, fibre optical transmission interface unit and
Optical fiber reception interface unit is connected with FPGA, and analog quantity conditioning unit is connected with DSP, and DSP is connected with FPGA, upper SVG equipment
The fibre optical transmission interface unit of controller is connected by optical fiber with the optical fiber reception interface unit of next SVG device controllers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720302289.1U CN206595718U (en) | 2017-03-27 | 2017-03-27 | Optical fibre ring control system for SVG multi-machine parallel connections |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720302289.1U CN206595718U (en) | 2017-03-27 | 2017-03-27 | Optical fibre ring control system for SVG multi-machine parallel connections |
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| CN206595718U true CN206595718U (en) | 2017-10-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994636A (en) * | 2019-12-24 | 2020-04-10 | 新风光电子科技股份有限公司 | SVG multi-machine parallel system based on CAN bus and carrier synchronization control method thereof |
| CN111600387A (en) * | 2020-05-26 | 2020-08-28 | 新风光电子科技股份有限公司 | Communication system and method for oil-immersed cascade SVG |
-
2017
- 2017-03-27 CN CN201720302289.1U patent/CN206595718U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994636A (en) * | 2019-12-24 | 2020-04-10 | 新风光电子科技股份有限公司 | SVG multi-machine parallel system based on CAN bus and carrier synchronization control method thereof |
| CN110994636B (en) * | 2019-12-24 | 2022-03-22 | 新风光电子科技股份有限公司 | SVG multi-machine parallel system based on CAN bus and carrier synchronization control method thereof |
| CN111600387A (en) * | 2020-05-26 | 2020-08-28 | 新风光电子科技股份有限公司 | Communication system and method for oil-immersed cascade SVG |
| CN111600387B (en) * | 2020-05-26 | 2021-09-24 | 新风光电子科技股份有限公司 | Communication system and method for oil-immersed cascade SVG |
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