CN105071400A - Collecting-distributing type reactive power compensation device coordinated control system based on RS485 bus - Google Patents
Collecting-distributing type reactive power compensation device coordinated control system based on RS485 bus Download PDFInfo
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- CN105071400A CN105071400A CN201510299134.2A CN201510299134A CN105071400A CN 105071400 A CN105071400 A CN 105071400A CN 201510299134 A CN201510299134 A CN 201510299134A CN 105071400 A CN105071400 A CN 105071400A
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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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Abstract
The present invention discloses a collecting-distributing type reactive power compensation device coordinated control system based on an RS485 bus. The system is composed of a plurality of RS485 to I/O interface units, a plurality of reactive compensation controllers, an RS485 concentrator, an RS485 repeater, an industrial computer and the like, wherein the reactive compensation controllers and the RS485 to I/O interface units are connected with the industrial computer through the RS485 repeater, the RS485 bus and the RS485 concentrator; and the industrial computer comprehensively coordinates and controls the reactive power compensation devices of different levels in the whole electric power system where power users are distributed through collected parameters of all levels of electric power systems, thereby ensuring realization of an optimized reactive compensation solution of the system.
Description
Technical field
The invention belongs to quality of power supply technical field, particularly relate to a kind of collecting and distributing type reactive power compensator coordinated control system based on RS485 bus.
Background technology
Reactive power compensator plays an important role in power supply system, can improve power factor of electric network, reduces the loss of supply transformer and conveying circuit, improves power supplying efficiency, improves power supply environment.So reactive power compensation device is in an indispensable very important position in power supply system.Rational selection compensation arrangement, can accomplish the loss reducing electrical network to greatest extent, power grid quality is improved.Otherwise, as selected or improper use, may electric power system be caused, voltage fluctuation, the factors such as harmonic wave increase.
At present, reactive-load compensation equipment kind is more, there are shunt capacitor reactive power compensator, TCR type SVC, TSC type SVC, SVG etc., several reactive-load compensation equipments may be comprised in electric power system, but these reactive-load compensation equipments most all with single hop bus for control object, regulate power factor on this section of bus by controlling single reactive power compensator that overlaps.May install by electric unit supply and distribution system at different levels used and overlap reactive power compensator more.But every covering device is independent control, from the idle situation of the whole electrical network of overview the overall situation, also cannot cannot synthesize and coordinate control, rational allocation reactive power compensation power output, reach the reactive power compensation equilibrium of supply and demand of whole electrical network.
Summary of the invention
For the problems referred to above, the invention provides one
For achieving the above object, the present invention is based on the collecting and distributing type reactive power compensator coordinated control system of RS485 bus, comprise industrial computer, described industrial computer by RS485 bus respectively with the 1st grade of electric power system, the 2nd grade of electric power system, 3rd level electric power system, n-th grade of electric power system and the 1st grade of distribution system, the 2nd grade of distribution system, m level distribution system, wherein n, m are positive integer;
Described electric power systems at different levels are comprised the electric network synthetic automated system be connected with described industrial computer by described RS485 bus and monitor backstage, some idle compensating controls, SVC, SVG, synchronous compensator, synchronous generator, described SVC, SVG, synchronous compensator, synchronous generator turn I/O interface unit by RS485 and are connected and are connected with described RS485 bus, some relaying protection supervising devices that described electric network synthetic automated system monitoring backstage is connected by Ethernet;
Industrial computer is monitored and exchanges data the reactive power situation in the supply and distribution systems at different levels of user and all kinds of idle compensating control by RS485 bus, industrial computer is by the idle situation of electric power system at different levels in Ethernet detection of grid, according to the hierarchical relationship of user supply and distribution system, equipment room distance, reactive-load compensation equipment character and compensation ability, provide reactive power compensation Coordinated Control Scheme in real time, control the switching of various idle compensating control in the supply and distribution system of place;
Industrial computer gathers supply and distribution system voltage at different levels, electric current, power factor data by RS485 bus from measurement and Control Equipment for Relay Protection, and sends a deciliter reactive power compensation outlet switch cabinet deciliter control command to measurement and Control Equipment for Relay Protection;
According to the Scheme of Reactive Power Compensation overall control reactive-load compensation equipment of industrial computer, by RS485 bus, control command is sent to supply and distribution system reactive power compensator at different levels, SVC, SVG, synchronous generator, synchronous compensator, make factory's power factor reach the requirement of concerned countries regulation.
Further, described RS485 turns in SVC, SVG control cubicle that I/O interface unit is installed in supply and distribution system at different levels, for gathering the real time datas such as operating voltage in SVC, SVG, electric current and reactive power, receiving simultaneously and performing the control of reactive power compensating adjusting command from industrial computer.
Further, described RS485 turns I/O interface unit and is installed in synchronous generator exciting control cubicle or synchronous compensator excitation con-trol cashier's office in a shop, for gathering exciting current signal from control cubicle, signal being converted into RS485 signal and delivering to industrial computer; Receive the excitation regulation instruction that industrial computer sends simultaneously, be converted to dry contact on-off model by RS485 bus signals, deliver to synchronous generator control cubicle or synchronous compensator control cubicle field regulator, with control synchronization generator or the increase and decrease of synchronous compensator excitation.
Further, described idle compensating control is installed in the reactive power compensator of supply and distribution system at different levels, industrial computer is delivered to by RS485 interface, there is provided the running status of place reactive-load compensation equipment and each switching situation compensating branch road to industrial computer, and perform the compensation branch road switching order that industrial computer sends.
The present invention is based on the collecting and distributing type reactive power compensator coordinated control system of RS485 bus, can according to reactive power compensator and field apparatus situation, adjustment Scheme of Reactive Power Compensation design principle, cooperation control reactive power compensator, utilize existing reactive-load compensation equipment, reach best reactive power compensation effect; Can the reactive power distribution situation of grasp supply and distribution system of complete display, view reactive-load compensation equipment operation conditions and the reactive power compensation effect of supply and distribution system at different levels.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the collecting and distributing type reactive power compensator coordinated control system that the present invention is based on RS485 bus;
Fig. 2 is the Application Example schematic diagram of the collecting and distributing type reactive power compensator coordinated control system that the present invention is based on RS485 bus.
Embodiment
Below in conjunction with Figure of description, the present invention will be further described.
As shown in Figure 1, the present invention is based on the collecting and distributing type reactive power compensator coordinated control system of RS485 bus, comprise industrial computer, described industrial computer by RS485 bus respectively with the 1st grade of electric power system, the 2nd grade of electric power system, 3rd level electric power system, n-th grade of electric power system and the 1st grade of distribution system, the 2nd grade of distribution system, m level distribution system, wherein n, m are positive integer;
Described electric power systems at different levels are comprised the electric network synthetic automated system be connected with described industrial computer by described RS485 bus and monitor backstage, some idle compensating controls, SVC, SVG, synchronous compensator, synchronous generator, described SVC, SVG, synchronous compensator, synchronous generator turn I/O interface unit by RS485 and are connected and are connected with described RS485 bus, some relaying protection supervising devices that described electric network synthetic automated system monitoring backstage is connected by Ethernet;
Industrial computer is monitored and exchanges data the reactive power situation in the supply and distribution systems at different levels of user and all kinds of idle compensating control by RS485 bus, industrial computer is by the idle situation of electric power system at different levels in Ethernet detection of grid, according to the hierarchical relationship of user supply and distribution system, equipment room distance, reactive-load compensation equipment character and compensation ability, provide reactive power compensation Coordinated Control Scheme in real time, control the switching of various idle compensating control in the supply and distribution system of place;
Industrial computer gathers supply and distribution system voltage at different levels, electric current, power factor data by RS485 bus from measurement and Control Equipment for Relay Protection, and sends a deciliter reactive power compensation outlet switch cabinet deciliter control command to measurement and Control Equipment for Relay Protection;
According to the Scheme of Reactive Power Compensation overall control reactive-load compensation equipment of industrial computer, by RS485 bus, control command is sent to supply and distribution system reactive power compensator at different levels, SVC, SVG, synchronous generator, synchronous compensator, make factory's power factor reach the requirement of concerned countries regulation.
As shown in Figure 2,1 is industrial computer, and 2 is RS485 hub; 3 is RS485 repeater, and 4 is RS485 bus, and 5 is electric network synthetic automated system monitoring backstage; 6 is electric network synthetic automated system SCADA Ethernet, and 7 is measurement and Control Equipment for Relay Protection, and 8 turn I/O interface unit for RS485; 9 is SVC control cubicle; 10 is SVG control cubicle, and 11 is synchronous generator exciting control cubicle, and 12 is synchronous compensator excitation control cabinet; 13 is idle compensating control, and 14 is control cables.
In Fig. 2, n platform 35kV measurement and Control Equipment for Relay Protection 7, SCADA Ethernet 6 and monitoring backstage 5 be composition 35kV electric network synthetic automated system jointly.Total input-wire voltage in electrical network at the corresponding levels, total input-wire electric current, power factor, SVC outgoing line cabinet circuit-breaker status, SVG outgoing line cabinet circuit-breaker status etc. are delivered to industrial computer 1 by RS485 bus 4, RS485 repeater 3 and RS485 hub 2 by the reactive power compensation signals collecting program in monitoring backstage 5; RS485 turns I/O interface unit 8 and this cover SVC, SVG device coherent signal in SVC control cubicle 9 and SVG control cubicle 10 is delivered to industrial computer 1 through RS485 bus 4 and RS485 hub 2 after being converted into RS485 signal; Coherent signal in this cover reactive power compensator is delivered to industrial computer 1 through RS485 bus 4 and RS485 hub 2 by idle compensating control 13; RS485 turns I/O interface unit 8 and this cover SVC, SVG device coherent signal in generator excitation control cabinet 11 and compensator excitation control cabinet 12 is delivered to industrial computer 1 through RS485 bus 4 and RS485 hub 2 after being converted into RS485 signal.10kV and other supply and distribution systems at different levels and 35kV electric power system similar.
The present invention is based on the collecting and distributing type reactive power compensator coordinated control system of RS485 bus, comprise RS485 and turn I/O interface unit, idle compensating control, RS485 communication cable, industrial computer etc., wherein, described measurement and Control Equipment for Relay Protection is monitored backstage by Ethernet and complex automatic system and is connected, and complex automatic system monitoring backstage is connected with industrial computer by RS485 network again; Described idle compensating control is connected with industrial computer by RS485 network, described SVC, SVG, synchronous compensator, synchronous generator, turns I/O interface unit be connected with RS485, and RS485 is turned I/O interface unit and is connected with industrial computer by RS485 network.Industrial computer is by the idle situation of supply network at different levels in Ethernet detection of grid, provide reactive power compensation Coordinated Control Scheme in real time, control the switching of various reactive power compensator in the supply and distribution system of place, thus improve reactive power compensator service efficiency, improve power factor of electric network.
Described measurement and Control Equipment for Relay Protection is relay protection of power system measure and control device, is generally many covering devices composition, for the protection of electric power system supply and distribution equipment, supervision, control.Generally form the Ethernet electric network synthetic automated system SCADA network based on ICP/IP protocol with measurement and Control Equipment for Relay Protection and monitoring backstage.Native system obtains the real time value such as voltage, electric current, power factor and reactive power compensator electric current in this electric power system by SCADA network from electric network synthetic automated system monitoring backstage, receives simultaneously and performs the divide-shut brake order of the reactive power compensation outgoing line cabinet from industrial computer.
Described RS485 turns in SVC, SVG control cubicle that I/O interface unit is installed in supply and distribution system at different levels, for gathering the real time datas such as operating voltage in SVC, SVG, electric current and reactive power, receiving simultaneously and performing the control of reactive power compensating adjusting command from industrial computer.
Described RS485 turns I/O interface unit and is installed in synchronous generator exciting control cubicle or synchronous compensator excitation con-trol cashier's office in a shop, for gathering exciting current signal from control cubicle, signal being converted into RS485 signal and delivering to industrial computer; Receive the excitation regulation instruction that industrial computer sends simultaneously, be converted to dry contact on-off model by RS485 bus signals, deliver to synchronous generator control cubicle or synchronous compensator control cubicle field regulator, with control synchronization generator or the increase and decrease of synchronous compensator excitation.
Described idle compensating control is installed in the reactive power compensator of supply and distribution system at different levels, industrial computer is delivered to by RS485 interface, there is provided the running status of place reactive-load compensation equipment and each switching situation compensating branch road to industrial computer, and perform the compensation branch road switching order that industrial computer sends.
Industrial computer is monitored and exchanges data the reactive power situation in the supply and distribution systems at different levels of user and all kinds of reactive-load compensation equipment by RS485 bus.
Industrial computer according to supply and distribution at different levels intrasystem reactive power situation and monitoring under available all kinds of reactive-load compensation equipment, according to the hierarchical relationship of user supply and distribution system, equipment room distance, reactive-load compensation equipment character and compensation ability etc., provide optimized Scheme of Reactive Power Compensation.
According to the Scheme of Reactive Power Compensation overall control reactive-load compensation equipment of industrial computer, by RS485 bus, control command is sent to electric power system reactive power compensator at different levels, SVC, SVG, synchronous generator, synchronous compensator etc., make factory's power factor reach the requirement of concerned countries regulation.
Industrial computer gathers the data such as supply and distribution system voltage at different levels, electric current, power factor by RS485 bus from measurement and Control Equipment for Relay Protection, and sends a deciliter reactive power compensation outlet switch cabinet deciliter control command to measurement and Control Equipment for Relay Protection.
Industrial computer 1 obtains high-low pressure at different levels and supplies, after all signals of distribution system, according to reactive power compensation nearby principle, client's electricity consumption check requirements, confession at different levels, distribution system internal burden characteristic requirements, confession at different levels, power distribution system voltage surge requirements, reactive-load compensation equipment characteristic and control priority etc., Logic judgment and computing is made in real time by industrial computer 1 internal processes, overall dispatched users supplies, all types reactive-load compensation equipment in distribution system, cooperation control reactive-load compensation equipment at different levels, reach Reactive Power Balance and most economical, the most effective Reactive-power control object.
Above; be only preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection range that protection scope of the present invention should define with claim is as the criterion.
Claims (4)
1. the collecting and distributing type reactive power compensator coordinated control system based on RS485 bus, it is characterized in that: comprise industrial computer, described industrial computer by RS485 bus respectively with the 1st grade of electric power system, the 2nd grade of electric power system, 3rd level electric power system, n-th grade of electric power system and the 1st grade of distribution system, the 2nd grade of distribution system, m level distribution system, wherein n, m are positive integer;
Described electric power systems at different levels are comprised the electric network synthetic automated system be connected with described industrial computer by described RS485 bus and monitor backstage, some idle compensating controls, SVC, SVG, synchronous compensator, synchronous generator, described SVC, SVG, synchronous compensator, synchronous generator turn I/O interface unit by RS485 and are connected and are connected with described RS485 bus, some relaying protection supervising devices that described electric network synthetic automated system monitoring backstage is connected by Ethernet;
Industrial computer is monitored and exchanges data the reactive power situation in the supply and distribution systems at different levels of user and all kinds of idle compensating control by RS485 bus, industrial computer is by the idle situation of electric power system at different levels in Ethernet detection of grid, according to the hierarchical relationship of user supply and distribution system, equipment room distance, reactive-load compensation equipment character and compensation ability, provide reactive power compensation Coordinated Control Scheme in real time, control the switching of various idle compensating control in the supply and distribution system of place;
Industrial computer gathers supply and distribution system voltage at different levels, electric current, power factor data by RS485 bus from measurement and Control Equipment for Relay Protection, and sends a deciliter reactive power compensation outlet switch cabinet deciliter control command to measurement and Control Equipment for Relay Protection;
According to the Scheme of Reactive Power Compensation overall control reactive-load compensation equipment of industrial computer, by RS485 bus, control command is sent to supply and distribution system reactive power compensator at different levels, SVC, SVG, synchronous generator, synchronous compensator, make factory's power factor reach the requirement of concerned countries regulation.
2. the collecting and distributing type reactive power compensator coordinated control system based on RS485 bus according to claim 1, it is characterized in that: described RS485 turns in SVC, SVG control cubicle that I/O interface unit is installed in supply and distribution system at different levels, for gathering the real time datas such as operating voltage in SVC, SVG, electric current and reactive power, receiving simultaneously and performing the control of reactive power compensating adjusting command from industrial computer.
3. the collecting and distributing type reactive power compensator coordinated control system based on RS485 bus according to claim 1, it is characterized in that: described RS485 turns I/O interface unit and is installed in synchronous generator exciting control cubicle or synchronous compensator excitation con-trol cashier's office in a shop, for gathering exciting current signal from control cubicle, signal being converted into RS485 signal and delivering to industrial computer; Receive the excitation regulation instruction that industrial computer sends simultaneously, be converted to dry contact on-off model by RS485 bus signals, deliver to synchronous generator control cubicle or synchronous compensator control cubicle field regulator, with control synchronization generator or the increase and decrease of synchronous compensator excitation.
4. the collecting and distributing type reactive power compensator coordinated control system based on RS485 bus according to claim 1, it is characterized in that: described idle compensating control is installed in the reactive power compensator of supply and distribution system at different levels, industrial computer is delivered to by RS485 interface, there is provided the running status of place reactive-load compensation equipment and each switching situation compensating branch road to industrial computer, and perform the compensation branch road switching order that industrial computer sends.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106908724A (en) * | 2017-03-02 | 2017-06-30 | 国家电网公司 | A kind of large-scale phase modifier scene no-load characteristic measurement method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106908724A (en) * | 2017-03-02 | 2017-06-30 | 国家电网公司 | A kind of large-scale phase modifier scene no-load characteristic measurement method |
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Application publication date: 20151118 |