CN104570772A - Micro-grid integration testing simulation platform based on RTDS and method - Google Patents
Micro-grid integration testing simulation platform based on RTDS and method Download PDFInfo
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Abstract
The invention discloses a micro-grid integration testing simulation platform based on an RTDS and a method and belongs to digital simulation. An RTDS digital simulator, a real control system and a micro-grid energy management system are arranged, electric loops of a micro-grid are erected in an RSCAD, and the structure of the micro-grid can be flexibly changed as required. Through the micro-grid integration testing simulation platform based on the RTDS, a micro-grid coordination control strategy and an energy management algorithm are effectively verified, and the new effective method for testing a micro-grid control algorithm and a running strategy is provided. Besides, the method is simple and convenient to operate and well solves the problems that according to an existing air and diesel storage micro-grid simulation method, a testing platform is a real device based on scale reduction, extension of the micro-grid structure is not facilitated, and the erected platform does not has universality.
Description
Technical field
The invention belongs to the test of electric system real-timedigital simulation and micro-capacitance sensor technical field, particularly relate to a kind of micro-capacitance sensor integration testing emulation platform based on RTDS and method.
Background technology
The power supply reliability of microgrid, need in microgrid, to configure traditional diesel-driven generator, in addition, in order to suppress the fluctuation of the such as regenerative resource such as photovoltaic, blower fan output power, often need the energy storage configuring certain capacity, thus form wind/light bavin storage type independent micro-grid.This type of microgrid as the main power-supplying forms on remote districts, island etc., to the economic development of locality and the basic living allowance of resident significant.
At present for the research of wind bavin storage microgrid, the optimum capacity configuration of each element in main concern microgrid, the method of investment reduction and operating cost and improve micro net power quality, the microgrid energy management suppressing power of fan to fluctuate and coordination control strategy etc., but these emulation modes and test platform are all the real equipment based on scale smaller, be unfavorable for the expansion of microgrid structure, the experiment porch built not tool is general.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of micro-capacitance sensor integration testing emulation platform based on RTDS and method, be intended to solve at present for the real equipment that the emulation mode of wind bavin storage microgrid and test platform are based on scale smaller, be unfavorable for the expansion of microgrid structure, the experiment porch built is the general problem of tool not.
The embodiment of the present invention is achieved in that a kind of micro-capacitance sensor integration testing emulation platform based on RTDS, should comprise: RTDS digital simulator, real world control system, energy management system of micro-grid based on the micro-capacitance sensor integration testing emulation platform of RTDS;
RTDS digital simulator, the analog quantity that remote measurement needed for energy management, remote signalling amount and controller realize needed for control strategy is carried out for being exported energy management system of micro-grid in real time by interface, receive the control signal that the remote signal that issues of energy management system of micro-grid and controller generate simultaneously, realize energy management and the cooperation control of microgrid;
Real world control system, be connected with RTDS digital simulator, for receiving three road PCS exit potential, electric current and DC side bus voltage signal that RTDS digital simulator exports, generate pwm signal according to respective algorithms and export in RTDS digital simulator and realize control strategy, RTDS digital simulator to PCS control panel, receives by GTDI board the pwm signal that PCS control panel sends by the analog output channel outputting analog signal on front panel simultaneously;
Energy management system of micro-grid, be connected with RTDS digital simulator, for receiving remote measurement that RTDS digital simulator exports, remote signalling amount and controller realize analog quantity needed for control strategy, and the control signal that the remote signal of generation and controller generate be sent to RTDS digital simulator.
Further, energy management system of micro-grid also comprises: measuring and controlling protective device, mode switch, battery management system, digital-to-analogue/analog-digital commutator, energy management system;
Measuring and controlling protective device, is connected with energy management system and RTDS digital simulator, for being gathered the electric quantity information of each element in microgrid operation by the analog output channel of RTDS digital simulator, and information is uploaded to energy management system;
Mode switch, is connected with energy management system and RTDS digital simulator, starts the same period, pattern switches, excision instruction sent out by bavin for sending;
Battery management system, be connected with energy management system and RTDS digital simulator, for cell voltage, current signal that the GTAO board receiving RTDS digital simulator exports, complete the monitoring of battery charge state, battery charge state, in real time input/output power information are transferred to energy management system simultaneously;
Digital-to-analogue/analog-digital commutator, is connected with energy management system and RTDS digital simulator, issues blower fan limit power instruction and receive real-time wind velocity signal for received energy management system;
Energy management system, with measuring and controlling protective device, mode switch, battery management system is connected with digital-to-analogue/analog-digital commutator, make decisions for the information that receives according to the analysis of energy management algorithm synthesis, on-off model is issued by measuring and controlling protective device, realize such as isolating switch in RTDS digital simulator to cut-off, the function of load switching, issue bavin by mode switch and send out the startup same period, pattern switches, excision instruction sent out by bavin, and receive the bavin that RTDS digital simulator returns and send out simultaneous completion signal and PCS pattern handoff completion signal, issue blower fan limit power instruction by data acquisition module simultaneously, realize the Optimized Operation of microgrid energy.
Further, energy management system carries out energy management to be needed to gather fan outlet electric current, load current, PCS outlet electric current, battery charge state and real-time wind speed information, issues pattern switching, the instruction of load switching according to corresponding management algorithm.
Further; RTDS digital simulator is communicated with measuring and controlling protective device by the analog output channel of front panel and digital quantity input channel; communicated with mode switch by digital quantity I/O passage, measuring and controlling protective device is communicated with energy management system by switch with mode switch again.
Further, energy management system is directly communicated with RTDS digital simulator by RS-485 serial port, receives wind velocity signal and issues blower fan limit power instruction.
Further, real world control system is three PCS control panels, realizes the control to 3 energy-storage units in microgrid.
Another object of the embodiment of the present invention is to provide a kind of micro-capacitance sensor integration testing emulation mode based on RTDS, should comprise based on the micro-capacitance sensor integration testing emulation mode of RTDS:
Micro-capacitance sensor integration testing emulation platform based on RTDS provided by the invention and method, RTDS Digital Simulation System, real world control system and energy management system of micro-grid (EMS/SCADA) three parts are set, the electric loop of microgrid is all built in RSCAD, belong to Digital Simulation, microgrid structure can be changed neatly as required.The micro-capacitance sensor integration testing emulation platform that the present invention is based on RTDS achieves the checking to microgrid coordination control strategy and energy management algorithm validity, provides the effective ways of a kind of new test microgrid control algolithm and operation reserve.In addition, method of the present invention is simple, easy to operate, and solve preferably at present for the real equipment that the emulation mode of wind bavin storage microgrid and test platform are based on scale smaller, be unfavorable for the expansion of microgrid structure, the experiment porch built is the general problem of tool not.
Accompanying drawing explanation
Fig. 1 is the structural representation of the micro-capacitance sensor integration testing emulation platform based on RTDS that the embodiment of the present invention provides;
Fig. 2 is the energy management system of micro-grid structural representation that the embodiment of the present invention provides;
Fig. 3 is the response curve schematic diagram under the wind bavin storage pattern wind speed mutation that provides of the embodiment of the present invention;
Fig. 4 is the process flow diagram of the micro-capacitance sensor integration testing emulation mode based on RTDS that the embodiment of the present invention provides;
In figure: 1, RTDS digital simulator; 2, real world control system; 3, energy management system of micro-grid; 3-1, measuring and controlling protective device; 3-2, mode switch; 3-3, battery management system; 3-4, digital-to-analogue/analog-digital commutator; 3-5, energy management system.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
As depicted in figs. 1 and 2, the micro-capacitance sensor integration testing emulation platform based on RTDS of the embodiment of the present invention is primarily of RTDS digital simulator 1, real world control system 2, energy management system of micro-grid 3, measuring and controlling protective device 3-1, mode switch 3-2, battery management system 3-3, digital-to-analogue/analog-digital commutator 3-4, energy management system 3-5;
RTDS digital simulator 1, the analog quantity that remote measurement needed for energy management, remote signalling amount and controller realize needed for control strategy is carried out for being exported energy management system of micro-grid 3 in real time by interface, receive the control signal that the remote signal that issues of energy management system of micro-grid 3 and controller generate simultaneously, realize energy management and the cooperation control of microgrid;
Real world control system 2, be connected with RTDS digital simulator 1, for receiving three road PCS exit potential, electric current and DC side bus voltage signal that RTDS digital simulator 1 exports, generate pwm signal according to respective algorithms and export in RTDS digital simulator 1 and realize control strategy, RTDS digital simulator 1 to PCS control panel, receives by GTDI board the pwm signal that PCS control panel sends by the analog output channel outputting analog signal on front panel simultaneously;
Energy management system of micro-grid 3, be connected with RTDS digital simulator 1, for receiving remote measurement that RTDS digital simulator 1 exports, remote signalling amount and controller realize analog quantity needed for control strategy, and the control signal that the remote signal of generation and controller generate be sent to RTDS digital simulator 1;
Real world control system 2 is three PCS control panels, realizes the control to 3 energy-storage units in microgrid;
Energy management system of micro-grid 3 also comprises: measuring and controlling protective device 3-1, mode switch 3-2, battery management system 3-3, digital-to-analogue/analog-digital commutator 3-4, energy management system 3-5;
Measuring and controlling protective device 3-1, is connected with energy management system 3-5 and RTDS digital simulator 1, for being gathered the electric quantity information of each element in microgrid operation by the analog output channel of RTDS digital simulator 1, and information is uploaded to energy management system 3-5;
Mode switch 3-2, is connected with energy management system 3-5 and RTDS digital simulator 1, starts the same period, pattern switches, the instructions such as excision sent out by bavin for sending;
Battery management system 3-3, be connected with energy management system 3-5 and RTDS digital simulator 1, for cell voltage, current signal that the GTAO board receiving RTDS digital simulator 1 exports, complete the monitoring of battery charge state, simultaneously by information transmission such as battery charge states, in real time input/output power to energy management system 3-5;
Digital-to-analogue/analog-digital commutator 3-4, is connected with energy management system 3-5 and RTDS digital simulator 1, issues blower fan limit power instruction and receive real-time wind velocity signal for received energy management system 3-5;
Energy management system 3-5, with measuring and controlling protective device 3-1, mode switch 3-2, battery management system 3-3 is connected with digital-to-analogue/analog-digital commutator 3-4, make decisions for the information that receives according to the analysis of energy management algorithm synthesis, on-off model is issued by measuring and controlling protective device, realize such as isolating switch in RTDS digital simulator 1 to cut-off, the function of load switching, issue bavin by mode switch and send out the startup same period, pattern switches, the instructions such as excision sent out by bavin, and receive the bavin that RTDS digital simulator 1 returns and send out simultaneous completion signal and PCS pattern handoff completion signal, issue blower fan limit power instruction by data acquisition module simultaneously, realize the Optimized Operation of microgrid energy,
Energy management system 3-5 carries out energy management to be needed to gather fan outlet electric current, load current, PCS exports electric current, the information such as battery charge state and in real time wind speed, issue pattern according to corresponding management algorithm to switch, the instructions such as load switching, RTDS digital simulator 1 is communicated with measuring and controlling protective device by the analog output channel of front panel and digital quantity input channel, communicated with mode switch by digital quantity I/O passage, measuring and controlling protective device is communicated with energy management system 3-5 by switch with mode switch again, simultaneously, energy management system 3-5 is directly communicated with RTDS digital simulator 1 by RS-485 serial port, receive wind velocity signal and issue blower fan limit power instruction, as shown in Figure 2.
Should comprise based on the micro-capacitance sensor integration testing emulation mode of RTDS:
Step one, analyzes each equipment principle of micro-grid system, builds realistic model:
Comprise major equipment in this micro-grid system to have: blower fan, accumulator, energy storage PCS and diesel-driven generator.For passing through emulation mode simulated real system, must analyze each equipment principle, founding mathematical models also builds realistic model;
Step 2, builds system RTDS realistic model, computer sim-ulation parameter:
RTDS analogue simulation system input and output and operation characteristic, the method adopting real equipment and realistic model to combine, simulates real system, by emulation certainty annuity Reasonable Parameters;
Step 3, carry out the temporary Steady Experimental of system, prove the problem such as Systematical control and stability:
By debugging the system model improved, thus stability test can be carried out safely, proving Systematical control problem and stability problem, for real system optimum configurations provides guidance, shorten the Practical Project duration.
Step 4, energy management system of micro-grid strategy and running test:
In conjunction with existing emulation platform, microgrid energy control strategy is formulated according to environment, prove backstage energy management system by experimental test can realize expecting that strategy runs, and corresponding customization can be carried out according to Practical Project changes in environmental conditions, thus realization emulation is combined with engineering, checking running background reliability, reduces energy management system debug time.
Process flow diagram as shown in Figure 4.
Specific embodiments of the invention:
The present invention has built the universal storage of the wind bavin based on a RTDS independent micro-grid numerical model analysis simulation test platform, comprise RTDS digital simulator, real world control system and energy management system of micro-grid (EMS/SCADA) three parts, the electric loop of microgrid is all built in RSCAD, belong to Digital Simulation, microgrid structure can be changed neatly as required, can realize experimental studies such as the checkings of microgrid coordination control strategy and energy management algorithm validity based on this test platform, provide the effective ways of a kind of new test microgrid control algolithm and operation reserve,
One, overall introduction:
The research to above-mentioned microgrid coordination control strategy and energy management algorithm can be realized based on the experiment porch shown in Fig. 1, platform comprises three parts: RTDS digital simulator, external system and communication interface, and wherein external system is the EMS/SCADA system and controller that need test; The electric loop of microgrid is built in RSCAD, export EMS/SCADA system in real time by interface in simulation process and carry out the analog quantity that remote measurement needed for energy management, remote signalling amount and controller realize needed for control strategy, receive remote signal that EMS/SCADA system issues and the control signal that controller generates simultaneously, realize energy management and the cooperation control of microgrid; Controller controls the break-make of each current transformer valve in microgrid mainly through generating pwm pulse signal, realize such as blower fan, photovoltaic maximal power tracing (MPPT) and control, and the control of accumulator system;
Two, plateform system composition:
The microgrid experiment porch that the present invention builds comprises RTDS Digital Simulation seven, PCS control system and EMS/SCADA system three parts, describes in detail below to each several part and mutual communication interface, the traffic;
1. self microgrid model:
The present invention has built a wind bavin storage microgrid on the experiment porch basis shown in Fig. 1, microgrid structure as shown in Figure 1, primary system comprises a 2.5MW permanent magnetic direct-drive fan, export through 0.69/10KV transformer access 10KV bus, 3 capacity are the energy storage of 600KW and the diesel-driven generator of a 1.25MVA, load is the seawater desalination system of 3*600KW, and energy storage, extra large light system are connected with system each via 0.4/10KV transformer with Chai Fa; Object is to verify the coordination control strategy of real world control system (PCS control panel) and the validity of microgrid energy management algorithm, EMS is optimized scheduling according to information such as the wind speed of prediction and the storage battery charge states (SOC) of Real-time Collection to microgrid, realizes microgrid internal loading switching, pattern switches and the operations such as power limit by blower fan by controller and SCADA system;
2.PCS control panel:
Real world control system in Fig. 1 is three PCS control panels, realizes the control to 3 energy-storage units in microgrid; Real world control system receives three road PCS exit potential, electric current and the DC side bus voltage signal that RTDS exports, and generates pwm signal and export in RTDS to realize control strategy according to respective algorithms; RTDS to PCS control panel, receives by GTDI board the pwm signal that PCS control panel sends by the analog output channel outputting analog signal on front panel simultaneously;
3.EMS/SCADA system:
The EMS/SCADA system of microgrid mainly comprises measuring and controlling protective device, mode switch, battery management system (BMS), digital-to-analogue/analog-digital commutator and energy management system (EMS), as shown in Figure 2; Digital-to-analogue/analog-digital commutator is respectively used to EMS and issues blower fan limit power instruction and receive real-time wind velocity signal; Cell voltage, current signal that the GTAO board that BMS receives RTDS exports, complete the monitoring of battery charge state (SOC), simultaneously by information transmission such as the SOC of battery, in real time input/output power to EMS; Measuring and controlling protective device gathers the electric quantity information of each element in microgrid operation by the analog output channel of RTDS, and these information are uploaded to EMS; The information that EMS receives according to the analysis of energy management algorithm synthesis also makes decisions, on-off model is issued by measuring and controlling protective device, realize that such as isolating switch in RTDS Digital Simulation cut-offs, the function of load switching, by mode switch issue bavin send out start the same period, pattern switches, bavin sends out the instructions such as excision, and receive the bavin that RTDS returns and send out simultaneous completion signal and PCS pattern handoff completion signal, issue blower fan limit power instruction by data acquisition module simultaneously, realize the Optimized Operation of microgrid energy;
EMS carries out energy management to be needed to gather fan outlet electric current, load current, PCS exports electric current, the information such as battery SOC and in real time wind speed, issue pattern according to corresponding management algorithm to switch, the instructions such as load switching, as mentioned before, RTDS is communicated with measuring and controlling protective device by the analog output channel of front panel and digital quantity input channel, communicated with mode switch by digital quantity I/O passage, measuring and controlling protective device is communicated with EMS by switch with mode switch again, simultaneously, EMS is directly communicated with RTDS by RS-485 serial port, receive wind velocity signal and issue blower fan limit power instruction, as shown in Figure 2,
The communication of RTDS and external unit mainly relies on its board expanded, comprise GTDI/GTDO (digital quantity I/O) board, GTAI/GTAO (analog input/output) board, simultaneously, RTDS front panel provides the digital quantity I/O port of 16 passages, and each GPC additionally provides the analog output channel on 24 tunnels; GTAI/GTAO board is respectively the analog to digital conversion board of 16bit and the digital-to-analog conversion board of 16bit, and the analog signals scope allowing I/O is ± 10V; Analog output channel on front panel is the digital-to-analog conversion board of 12bit, and exporting analog quantity scope is ± 10V, and digital quantity I/O is generally hard contact point signal; In emulation experiment of the present invention, step is shown in Fig. 4, the voltage of each component outlet, the analog signals such as electric current and 10KV busbar voltage export voltage, the electric current port of power amplifier to by the analog output channel on front panel, being exported by power amplifier is connected in measuring and controlling protective device again, the killer switch amount signal that EMS issues, bavin send out the same period enabling signal and simultaneous completion return signal etc. realize communication by the digital quantity I/O passage of front panel; In addition, the pwm pulse signal that exterior PC S control panel exports inputs in RTDS by GTDI board; The blower fan limit power instruction signal that EMS issues is inputted by GTAI board, and the communication of RTDS and BMS is then realized by GTAO board;
By test, the integration testing work of certain the typical wind bavin storage micro-grid system utilizing the present invention to complete, finds that the present invention meets actual demands of engineering, Fig. 3 gives the response curve under wind bavin storage pattern wind speed mutation.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. based on a micro-capacitance sensor integration testing emulation platform of RTDS, it is characterized in that, should comprise based on the micro-capacitance sensor integration testing emulation platform of RTDS: RTDS digital simulator, real world control system, energy management system of micro-grid;
RTDS digital simulator, the analog quantity that remote measurement needed for energy management, remote signalling amount and controller realize needed for control strategy is carried out for being exported energy management system of micro-grid in real time by interface, receive the control signal that the remote signal that issues of energy management system of micro-grid and controller generate simultaneously, realize energy management and the cooperation control of microgrid;
Real world control system, be connected with RTDS digital simulator, for receiving three road PCS exit potential, electric current and DC side bus voltage signal that RTDS digital simulator exports, generate pwm signal according to existing reverse control technology respective algorithms and export in RTDS digital simulator and realize control strategy, RTDS digital simulator to PCS control panel, receives by GTDI board the pwm signal that PCS control panel sends by the analog output channel outputting analog signal on front panel simultaneously;
Energy management system of micro-grid, be connected with RTDS digital simulator, for receiving remote measurement that RTDS digital simulator exports, remote signalling amount and controller realize analog quantity needed for control strategy, and the control signal that the remote signal of generation and controller generate be sent to RTDS digital simulator.
2. as claimed in claim 1 based on the micro-capacitance sensor integration testing emulation mode of RTDS, it is characterized in that, energy management system of micro-grid also comprises: measuring and controlling protective device, mode switch, battery management system, digital-to-analogue/analog-digital commutator, energy management system;
Measuring and controlling protective device, is connected with energy management system and RTDS digital simulator, for being gathered the electric quantity information of each element in microgrid operation by the analog output channel of RTDS digital simulator, and information is uploaded to energy management system;
Mode switch, is connected with energy management system and RTDS digital simulator, starts the same period, pattern switches, excision instruction sent out by bavin for sending;
Battery management system, be connected with energy management system and RTDS digital simulator, for cell voltage, current signal that the GTAO board receiving RTDS digital simulator exports, complete the monitoring of battery charge state, battery charge state, in real time input/output power information are transferred to energy management system simultaneously;
Digital-to-analogue/analog-digital commutator, is connected with energy management system and RTDS digital simulator, issues blower fan limit power instruction and receive real-time wind velocity signal for received energy management system;
Energy management system, with measuring and controlling protective device, mode switch, battery management system is connected with digital-to-analogue/analog-digital commutator, make decisions for the information that receives according to the analysis of energy management algorithm synthesis, on-off model is issued by measuring and controlling protective device, realize such as isolating switch in RTDS digital simulator to cut-off, the function of load switching, issue bavin by mode switch and send out the startup same period, pattern switches, excision instruction sent out by bavin, and receive the bavin that RTDS digital simulator returns and send out simultaneous completion signal and PCS pattern handoff completion signal, issue blower fan limit power instruction by data acquisition module simultaneously, realize the Optimized Operation of microgrid energy.
3. as claimed in claim 2 based on the micro-capacitance sensor integration testing emulation mode of RTDS, it is characterized in that, energy management system carries out energy management to be needed to gather fan outlet electric current, load current, PCS outlet electric current, battery charge state and real-time wind speed information, issues pattern switching, the instruction of load switching according to corresponding management algorithm.
4. as claimed in claim 1 or 2 based on the micro-capacitance sensor integration testing emulation mode of RTDS; it is characterized in that; RTDS digital simulator is communicated with measuring and controlling protective device by the analog output channel of front panel and digital quantity input channel; communicated with mode switch by digital quantity I/O passage, measuring and controlling protective device is communicated with energy management system by switch with mode switch again.
5. as claimed in claim 1 or 2 based on the micro-capacitance sensor integration testing emulation mode of RTDS, it is characterized in that, energy management system is directly communicated with RTDS digital simulator by RS-485 serial port, receives wind velocity signal and issues blower fan limit power instruction.
6., as claimed in claim 1 based on the micro-capacitance sensor integration testing emulation mode of RTDS, it is characterized in that, real world control system is three PCS control panels, realizes the control to 3 energy-storage units in microgrid.
7. based on a micro-capacitance sensor integration testing emulation mode of RTDS, it is characterized in that, should comprise based on the micro-capacitance sensor integration testing emulation mode of RTDS:
Step one, analyzes each equipment principle of micro-grid system, builds realistic model:
Comprise equipment in this micro-grid system to have: blower fan, accumulator, energy storage PCS and diesel-driven generator; For passing through emulation mode simulated real system, each equipment principle is analyzed, and founding mathematical models also builds realistic model;
Step 2, builds system RTDS realistic model, computer sim-ulation parameter:
RTDS analogue simulation system input and output and operation characteristic, the method adopting real equipment and realistic model to combine, simulates real system, by emulation certainty annuity Reasonable Parameters;
Step 3, carry out the temporary Steady Experimental of system, prove Systematical control and stability problem:
By debugging the system model improved, safety carries out stability test, proves Systematical control problem and stability problem, for real system optimum configurations provides guidance, shortens the Practical Project duration;
Step 4, energy management system of micro-grid strategy and running test:
In conjunction with existing emulation platform, formulate microgrid energy control strategy according to environment, prove backstage energy management system by experimental test and can realize expecting that strategy runs, and carry out corresponding customization according to Practical Project changes in environmental conditions.
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