CN103296676A - Simulation system of microgrid - Google Patents
Simulation system of microgrid Download PDFInfo
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- CN103296676A CN103296676A CN201210044863XA CN201210044863A CN103296676A CN 103296676 A CN103296676 A CN 103296676A CN 201210044863X A CN201210044863X A CN 201210044863XA CN 201210044863 A CN201210044863 A CN 201210044863A CN 103296676 A CN103296676 A CN 103296676A
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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
- Y02E40/30—Reactive power compensation
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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
- Y02E40/40—Arrangements for reducing harmonics
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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
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
Abstract
The invention discloses a simulation system of a microgrid. The simulation system of the microgrid comprises a power supply simulation module, a load simulation module, a switch simulation module, a receiving module, an analysis module and an output module, wherein the power supply simulation module is used for simulating an electric energy output device in the microgrid, the load simulation module is used for simulating an electric energy consumption device in the microgrid, the switch simulation module is used for simulating the switch, connected into the microgrid, of the electric energy output device and the switch, connected into the microgrid, of the electric energy consumption device, the receiving module is used for receiving a microgrid control strategy input by a user, the analysis module is used for analyzing the control strategy into control commands to control the power supply simulation module and the load simulation module to change operating parameters and to control the switch module to execute corresponding on-off actions, and the output module is used for outputting a trend distribution diagram formed after the microgrid executes the control strategy. Through the provided universal simulation system of the microgrid, when the study of the control strategy of the microgrid is achieved, the trend distribution of a power grid is obtained simply by inputting the control strategy, and the simulation system of the microgrid is easy to operate.
Description
Technical field
The present invention relates to power domain, in particular to a kind of analogue system of little electrical network.
Background technology
Little electrical network is a concept of traditional relatively big electrical network; refer to the network that a plurality of distributed power sources and related load thereof are formed according to certain topological structure; and be associated to conventional electrical network by static switch; namely refer to compile the small-sized electric system of being transported to that forms by distributed power source, energy storage device, energy conversion device, relevant load and monitoring, protective device; it is an autonomous system that can realize oneself's control, protection and management; both can be incorporated into the power networks with external electrical network, also can isolated operation.
First stage of construction at little electrical network, need carry out sunykatuib analysis to the operation stability of little electrical network, control strategy etc., at present, usually employing is simulated at the mode that concrete control strategy carries out emulation, simulation process is loaded down with trivial details, does not have general grid simulation system to simulate the execution result of different control strategies.Simultaneously, the operation of little electrical network control needs favorable extension performance, in order to study better control strategy.
At the loaded down with trivial details problem of little power grid control strategy simulation analysis in the correlation technique, effective solution is not proposed as yet at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of analogue system of little electrical network, to solve the loaded down with trivial details problem of little power grid control strategy simulation analysis.
To achieve these goals, comprise according to the analogue system of little electrical network of the present invention: the power supply emulation module is used for the power output device of the little electrical network of simulation; The load emulation module is for the power consumpting device of the little electrical network of simulation; The switch emulation module is used for the switch that simulation power output device and power consumpting device insert little electrical network; Receiver module is used for receiving little power grid control strategy that the user imports; Parsing module is used for control strategy is resolved to control command, change operational factor with control power supply emulation module and load emulation module, and the control switch module is carried out corresponding switch motion; And output module, be used for the trend distribution map after the little electrical network of output is carried out control strategy.
Further, the power supply emulation module comprises: photovoltaic cell emulation submodule, for the photovoltaic power generation apparatus of the little electrical network of simulation; And combining inverter emulation submodule, be used for the little electrical network combining inverter of simulation, wherein, combining inverter will be the required electric energy of user for the electric energy inversion that photovoltaic power generation apparatus is produced.
Further, the power supply emulation module comprises: energy-storage system emulation submodule, for the energy storage device of the little electrical network of simulation; And two-way inverter emulation submodule, be used for the two-way inverter of the little electrical network of simulation, wherein, two-way inverter will be used to carrying out direct current and the conversion that exchanges.
Further, the power supply emulation module comprises: cold, heat and electricity triple supply emulation submodule, and for three alliance generators of the little electrical network of simulation, wherein, three alliance generators are used for to little electrical network heat supply, cooling and power supply; And civil power emulation submodule, be used for the little electrical network of simulation and insert the electric energy that big electrical network is carried.
Further, cold, heat and electricity triple supply emulation submodule is used for simulation three alliance gas turbines.
Further, the load emulation module comprises: the first load emulation submodule, and for a stage load of the little electrical network of simulation, wherein, the power demands of a stage load is uninterrupted power supply; And the second load emulation submodule, be used for two stage loads of the little electrical network of simulation, wherein, the power demands of two stage loads is lower than a stage load.
Further, this analogue system also comprises: the reactive-load compensation equipment emulation module, for the reactive power compensation device of the little electrical network of simulation, carry out reactive power compensation with the electric energy to the output of power supply emulation module.
Further, the reactive-load compensation equipment emulation module is capacitor.
Further, this analogue system also comprises: the active filter emulation module, for the active filter of the little electrical network of simulation, carry out harmonic wave with the electric energy to the output of power supply emulation module and handle.
By the present invention, adopt the analogue system comprise with little electrical network of lower part: the power supply emulation module, load emulation module and the switch emulation module that are respectively applied to simulate the switch that power output device, power consumpting device and this power output device in little electrical network and power consumpting device insert little electrical network; The receiver module that is used for little power grid control strategy of reception user input; Be used for control strategy is resolved to control command, change operational factor with control power supply emulation module and load emulation module, and the control switch module carried out the parsing module of corresponding switch motion; And the output module that is used for the trend distribution map behind the little electrical network execution of the output control strategy, it is loaded down with trivial details to have solved little power grid control strategy simulation analysis, the problem that does not have general purpose simulation system, and then pass through this and use analogue system, make that the emulation of control strategy is more convenient.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the composition frame chart according to the little grid simulation system of first embodiment of the invention;
Fig. 2 is the composition frame chart according to the little grid simulation system of second embodiment of the invention;
Fig. 3 is the application schematic diagram according to the little grid simulation system of the embodiment of the invention;
Fig. 4 is the little power grid control strategy schematic diagram according to the embodiment of the invention; And
Fig. 5 is the signal that distributes of the trend according to the little grid simulation system output of the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the composition frame chart according to the little grid simulation system of first embodiment of the invention, as shown in Figure 1, this analogue system comprises: receiver module 10, parsing module 20, power supply emulation module 30, load emulation module 40, switch emulation module 50 and output module 60.
Wherein, power supply emulation module 20 is used for the power output device of the little electrical network of simulation, can comprise the not emulation module of power supply type of the same race, as the emulation module of the power output device of various ways such as energy-storage battery, solar power generation, civil power, fuel generating.Power consumpting device in the little electrical network of load emulation module 40 simulation can comprise the emulation module of the multiple power consumpting devices such as control device, charge power supply and generator power supply of lighting apparatus, demand external power source.Switch emulation module 50 is used for the switch that simulation power output device and power consumpting device insert little electrical network, and the switch emulation module 50 at this place also can provide polytype Artificial switch.
The user at first is configured little electrical network A when using this analogue system that little electrical network A and control strategy thereof are carried out simulation study, selects to make up little electrical network A with the corresponding power supply emulation module 30 of little electrical network A, load emulation module 40 and switch emulation module 50.Secondly, by receiver module 10 control strategy is inputed to analogue system, parsing module 20 in the analogue system resolves to control command with control strategy automatically, comprise that control power supply emulation module 30 and load emulation module 40 change operational factors, comprise that also the control switch module carries out corresponding switch motion.Finally little electrical network A operation of setting up by analogue system, and the trend distribution map that little electrical network is carried out behind the control strategy utilizes output module output, can directly by display unit the trend distribution map be shown, also can directly by printing equipment the trend distribution map be printed.
In this embodiment, analogue system provides power supply emulation module 30, load emulation module 40 and switch emulation module 50 to make up little electrical network of emulation, receiver module 10 receives the control strategy of user's input, and resolve to control command by parsing module 20, operation with the little electrical network of control emulation, the control result of final export control policy, i.e. output module 60 output trend distribution maps.
The analogue system research of adopting this embodiment to provide, can carry out simulation analysis to little electrical network arbitrarily, have versatility and extensibility, when the control strategy by the little electrical network of simulation study, the trend that directly obtains electrical network distributes, short and sweet, easy to operate, thereby can be before little power grid construction, actual conditions and development trend to the intelligent residential district are carried out real simulated, thereby in time find the problem that may exist in the operation development of intelligent residential district, and the control strategy of dealing with problems by simulation study, Financial cost is little, and is safe.
Fig. 2 is the composition frame chart according to the little grid simulation system of second embodiment of the invention, as shown in Figure 2, this analogue system comprises: receiver module 10, parsing module 20, power supply emulation module 30, load emulation module 40, switch emulation module 50, output module 60, reactive-load compensation equipment emulation module 70 and active filter emulation module 80.Wherein, power supply emulation module 30 comprises photovoltaic cell emulation submodule 31, combining inverter emulation submodule 32, energy-storage system emulation submodule 33, two-way inverter emulation submodule 34, cold, heat and electricity triple supply emulation submodule 35 and civil power emulation submodule 36.Wherein, load emulation module 40 comprises the first load emulation submodule 41 and the second load emulation submodule 42.
Wherein, photovoltaic cell emulation submodule 31 is used for the photovoltaic power generation apparatus of the little electrical network of simulation, combining inverter emulation submodule 32 is used for the little electrical network combining inverter of simulation, this combining inverter is the required electric energy of user with the electric energy inversion that photovoltaic power generation apparatus produces, by photovoltaic cell emulation submodule 31 and combining inverter emulation submodule 32, make little grid simulation system possess better popularity and versatility, satisfy the demand of little electrical network research.
Energy-storage system emulation submodule 33 is used for the energy storage device of the little electrical network of simulation, comprise storage battery, flow battery etc., two-way inverter emulation submodule 34 is used for the two-way inverter of the little electrical network of simulation, during electric energy that the electric energy that produces when other power supply generation module in the power supply emulation module 30 consumes greater than load emulation module 40, two-way inverter is converted to direct current with alternating current in the little electrical network of emulation, make energy-storage system emulation submodule 33 carry out energy storage, otherwise, direct current in the energy-storage system emulation submodule 33 is converted to the alternating current that load emulation module 40 uses, with the balance electrical network, by energy-storage system emulation submodule 33 and two-way inverter emulation submodule 34, make little grid simulation system possess better popularity and versatility, satisfy the demand of little electrical network research.
Cold, heat and electricity triple supply emulation submodule 35 is used for simulation to three alliance generators of little electrical network heat supply, cooling and power supply, alternatively, by cold, heat and electricity triple supply emulation submodule 35 simulations three alliance gas turbines, by cold, heat and electricity triple supply emulation submodule 35, make little grid simulation system possess better popularity and versatility, satisfy the demand of little electrical network research.
When civil power emulation submodule 36 was used for the little electrical network of simulation and inserts big electrical network, the electric energy that this big electrical network is carried to little electrical network made little grid simulation system possess better popularity and versatility, satisfies the demand of little electrical network research.
In order to make little electrical network that versatility more be arranged, according to the difference of load to the electric energy quality requirements, the first load emulation submodule 41 is used for a stage load of the little electrical network of simulation, the second load emulation submodule 42 is used for two stage loads of the little electrical network of simulation, wherein, the power demands of a stage load is uninterrupted power supply, and for example user such as hospital, bank is higher to the power reguirements of electrical network, the power demands of two stage loads is lower than a stage load, for example ordinarily resident's electricity consumption.
Reactive-load compensation equipment emulation module 70 is used for the reactive power compensation device of the little electrical network of simulation, carries out reactive power compensation with the electric energy to the output of power supply emulation module, and this reactive-load compensation equipment emulation module 70 adopts the emulation capacitor to realize.Active filter emulation module 80 is used for the active filter of the little electrical network of simulation, carries out harmonic wave with the electric energy to the output of power supply emulation module and handles.
The analogue system that adopts this embodiment to provide, comprised cold, heat and electricity triple supply in the system, photovoltaic cell, energy-storage battery, the emulation module of multiple power supply such as civil power, comprise a stage load, the load emulation module of two stage loads even multi-class workload, and the reactive-load compensation equipment emulation module and the active filter module that improve the quality of power supply, thereby make the user to carry out simulation study to little operation of power networks of intelligent residential district by this analogue system, can be at being incorporated into the power networks, lonely net, the commentaries on classics islet operation is incorporated into the power networks, isolated island recovers to be incorporated into the power networks, power supply is exerted oneself significantly and multiple typical case's control operational mode such as to be changed and carry out comparatively accurate simulation analysis.
Fig. 3 is the application schematic diagram according to the little grid simulation system of the embodiment of the invention, power supply emulation module in the little electrical network of this emulation comprises photovoltaic cell, energy-storage system (batteries), cold, heat and electricity triple supply and civil power, and the load emulation module comprises a stage load, two stage loads and three stage loads; The equipment that improves the quality of power supply comprises reactive-load compensation equipment (capacitor) and active filter, the 411-1 among the figure, 411-2 ... 414-2-11 is Artificial switch.Wherein, a stage load comprises that laboratory power supply, light current machine room, B2 (being underground two layers) passageway lighting power supply, B2 exhibition room power supply, 2 layers of exhibition room power supply, feeder cabinet control power supply, same period cabinet, photovoltaic gather power supply, the standby and generator power supply of load; Two stage loads comprise 2,2 layers of exhibition room power supply 2 of B2 exhibition room power supply, B2 illumination, 2 layers of illumination, 2 layers of corridor; Three stage loads comprise charging pile 1, charging pile 2, charging pile 3 and standby load.
Fig. 4 is the little power grid control strategy schematic diagram according to the embodiment of the invention, as shown in Figure 4, in this control strategy, for photovoltaic cell is generated electricity according to maximum discharge power, energy-storage system is nonserviceabled also can satisfy the need for electricity of a stage load down, photovoltaic cell and energy-storage system are treated as the PQ node, adopted PQ control, even its output has idle power invariability; Cold, heat and electricity three-way is provided as balance node, namely is injected with reactive power by regulating it, make the size of its node voltage and phase angle constant, the voltage-phase benchmark as whole little electrical network plays the effect of power-balance to little electrical network.Consider under little electrical network different running method the influence to control strategy, having the public network system to provide that voltage supports and net state under, cold, heat and power triple supply system adopts PQ control, it can be considered as a constant power output this moment; Under the island state of the support that does not have public network, cold, heat and power triple supply system adopts VF control usually, this moment, three alliances will be controlled voltage and frequency to satisfy the demand of sensitive load in the autonomous system, adopted this control strategy, and the trend distribution schematic diagram of analogue system output as shown in Figure 5.
By this analogue system, little electrical network is incorporated into the power networks changes the emulation of isolated island, can obtain: because energy-storage battery responds fast, when little electrical network converts the isolated island pattern to by the pattern of being incorporated into the power networks, return to normal level rapidly and keep stable after a stage load bus frequency and voltage fluctuateed through the short time.Because combined supply system is incorporated into the power networks in the isolated island transfer process at little electrical network, the pattern change-over time that can have 8-10s, then could be again and in a subtle way electrical network generate electricity, so two stage loads and photovoltaic cell temporarily disconnect (excision fully under the three stage load isolated island patterns) when islet operation, after three alliances generate electricity by way of merging two or more grid systems again, insert electrical network again.After two stage loads inserted bus, three alliance gas turbine active power of output and reactive power (electromagnetic power) were uprushed, and through recovering stable after the concussion of short time, busbar voltage and frequency return to normal level through concussion in short-term equally.
By this analogue system, power supply exerted oneself significantly to change carry out emulation, can obtain: because photovoltaic generation is batch (-type) randomness power supply, its power output situation is subjected to such environmental effects such as light radiation, temperature bigger, the fluctuation that photovoltaic is exerted oneself when being incorporated into the power networks is born by big electrical network, and system frequency and voltage are kept constant; Work as electric network fault, during little electrical network islet operation, photovoltaic goes out fluctuation little operation of power networks is brought certain influence.Photovoltaic exerts oneself to decline to a great extent to be influenced less to little operation of power networks, when the gas turbine reserve capacity is big, it goes out force-responsive fast can make two stage load busbar voltages and frequency keep a comparatively stable level after oscillation on small scale, guarantees two stage load normal power supplies.
As can be seen from the above description, the present invention has realized following technique effect: a kind of general analogue system is provided, has made that the research of little electrical network and control strategy thereof is more convenient, advanced which construction and the development of little electrical network, saved Financial cost.
Need to prove, can in the computer system such as one group of computer executable instructions, carry out in the step shown in the flow chart of accompanying drawing, and, though there is shown logical order in flow process, but in some cases, the order that can be different from is herein carried out step shown or that describe.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the analogue system of a little electrical network is characterized in that, comprising:
The power supply emulation module is for the power output device of the little electrical network of simulation;
The load emulation module is for the power consumpting device of the described little electrical network of simulation;
The switch emulation module is used for the switch that the described power output device of simulation and described power consumpting device insert described little electrical network;
Receiver module is used for receiving described little power grid control strategy that the user imports;
Parsing module is used for described control strategy is resolved to control command, changes operational factor to control described power supply emulation module and described load emulation module, and controls described switch module and carry out corresponding switch motion; And
Output module is used for the trend distribution map after the described little electrical network of output is carried out described control strategy.
2. the analogue system of little electrical network according to claim 1 is characterized in that, described power supply emulation module comprises:
Photovoltaic cell emulation submodule is for the photovoltaic power generation apparatus of the described little electrical network of simulation; And
Combining inverter emulation submodule is used for the described little electrical network combining inverter of simulation, and wherein, described combining inverter will be the required electric energy of user for the electric energy inversion that described photovoltaic power generation apparatus is produced.
3. the analogue system of little electrical network according to claim 1 is characterized in that, described power supply emulation module comprises:
Energy-storage system emulation submodule is for the energy storage device of the described little electrical network of simulation; And
Two-way inverter emulation submodule is used for the two-way inverter of the described little electrical network of simulation, and wherein, described two-way inverter will be used to carrying out direct current and the conversion that exchanges.
4. the analogue system of little electrical network according to claim 1 is characterized in that, described power supply emulation module comprises:
Cold, heat and electricity triple supply emulation submodule, for three alliance generators of the described little electrical network of simulation, wherein, described three alliance generators are used for to described little electrical network heat supply, cooling and power supply; And
Civil power emulation submodule is used for the described little electrical network of simulation and inserts the electric energy that big electrical network is carried.
5. the analogue system of little electrical network according to claim 4 is characterized in that, described cold, heat and electricity triple supply emulation submodule is used for simulation three alliance gas turbines.
6. the analogue system of little electrical network according to claim 1 is characterized in that, described load emulation module comprises:
The first load emulation submodule, for a stage load of the described little electrical network of simulation, wherein, the power demands of a described stage load is uninterrupted power supply; And
The second load emulation submodule, for two stage loads of the described little electrical network of simulation, wherein, the power demands of described two stage loads is lower than a described stage load.
7. the analogue system of little electrical network according to claim 1 is characterized in that, also comprises:
The reactive-load compensation equipment emulation module for the reactive power compensation device of the described little electrical network of simulation, carries out reactive power compensation with the electric energy to described power supply emulation module output.
8. the analogue system of little electrical network according to claim 7 is characterized in that, described reactive-load compensation equipment emulation module is capacitor.
9. the analogue system of little electrical network according to claim 1 is characterized in that, also comprises:
The active filter emulation module for the active filter of the described little electrical network of simulation, carries out harmonic wave with the electric energy to described power supply emulation module output and handles.
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