CN104967131A - SVG control module - Google Patents
SVG control module Download PDFInfo
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- CN104967131A CN104967131A CN201510279619.5A CN201510279619A CN104967131A CN 104967131 A CN104967131 A CN 104967131A CN 201510279619 A CN201510279619 A CN 201510279619A CN 104967131 A CN104967131 A CN 104967131A
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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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- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The invention discloses an SVG control module, comprising a core controller which accesses to a sampling conditioning module, a driving module, and a relay control and state returning module, wherein the core controller is composed of two DSPs in models of TMS320F28335, and an FPGA in the model of EP2C8; the sampling conditioning module comprises a DC side voltage sampling and overvoltage protection circuit, a power grid voltage sampling and zero cross detection circuit, an inductance current sampling and DC component detection circuit, an inductance current over-current protection circuit, and an IGBT temperature sampling circuit; the driving module is composed of a driving adapter plate, and a Concept special-purpose driving module. The SVG control module can measure a plurality of electric power parameters of a main power circuit in an SVG, and execute corresponding protection functions, meanwhile possesses the advantages of fast response speed and simple control, and can meet the requirement of an electric power system.
Description
Technical field
The present invention relates to SVG field, specifically a kind of SVG control module.
Background technology
static Var Compensator SVG is widely used in during the load compensation of modern power systems and transmission line compensate.The control module function of prior art SVG is simple, cannot realize measurement and the protection of multi-parameter, and there is the shortcoming that control is complicated, response speed is slow.
summary of the inventionthe object of this invention is to provide a kind of SVG control module, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of SVG control module, it is characterized in that: comprise core controller, core controller has access to sampling conditioning module, driver module, Control and state and returns module, wherein core controller is respectively the DSP of TMS320F28335 by two panels model, and a slice model be EP2C8 FPGA build form, wherein a slice DSP is main DSP, and another sheet DSP is from DSP, connected by spi bus between master and slave DPS, master and slave DSP is connected with communication between FPGA respectively;
Described sampling conditioning module comprises DC voltage sampling and overvoltage crowbar, line voltage sampling and zero cross detection circuit, inductive current sampling and DC component detection circuit, inductive current current foldback circuit, IGBT temperature sample circuit, in sampling conditioning module, each circuit input accesses SVG main power circuit respectively, and in sampling conditioning module, each circuit exports and accesses core controller respectively;
Described driver module is formed by driving the special driver module of keyset, Concept, keyset is driven to be connected with main in core controller DSP, FPGA respectively, the special driver module access of Concept drives keyset, and the special driver module of Concept is connected with each IGBT in SVG main power circuit;
Described Control and state return module and comprise metal-oxide-semiconductor QC6, model in auxiliary contact access SVG main power circuit is the relay of G2RG-2A4, model is the optocoupler U20 of PC817, the grid of metal-oxide-semiconductor QC6 accesses main DSP in core controller by resistance R54, the source ground of metal-oxide-semiconductor QC6, and the grid of metal-oxide-semiconductor QC6 is also by resistance R55 parallel with one another, electric capacity C49 is connected with source electrode, the drain electrode of metal-oxide-semiconductor QC6 is connected with the pin 6 of relay, the pin 1 of relay connects+24V voltage, and the pin 1 of relay is connected with self pin 6 by reverse diode D6, the pin 1 of relay is also by the source electrode ground connection altogether of electric capacity C176 and metal-oxide-semiconductor, the pin 2 of relay is connected with the pin 1 of optocoupler U20 by resistance R57, the pin 3 of relay connects+24V voltage, the pin 3 of relay is also by electric capacity C166 ground connection, the pin 4 of relay connects 220V voltage, the pin 4 of relay is also successively by electric capacity C50, resistance R56 accesses FPGA in core controller, the pin 5 of relay accesses FPGA in core controller, pin 2 ground connection of optocoupler, the pin 3 of optocoupler is by resistance R58 parallel with one another, electric capacity C52 ground connection, the pin 3 of optocoupler is also connected with the relay auxiliary contact be arranged in SVG main power circuit by wire, the pin 4 of optocoupler accesses+5V voltage, the pin 4 of optocoupler is also by electric capacity C137 ground connection.
Described a kind of SVG control module, it is characterized in that: in sampling conditioning module, DC voltage sampling and overvoltage crowbar comprise the operational amplifier UA1A that model is TL074IDRSM, and model is the comparator UA3D of LM239DRASM, operational amplifier UA1A just, negative power end connects+12V voltage respectively,-12V voltage, the in-phase input end of operational amplifier UA1A accesses the voltage signal of DC voltage instrument transformer in SVG main power circuit by resistance RA2, the in-phase input end of operational amplifier UA1A is also by resistance RA3 parallel with one another, electric capacity CA1 ground connection, the inverting input of operational amplifier UA1A is by resistance RA4 ground connection, the inverting input of operational amplifier UA1A is also by resistance RA5 parallel with one another, electric capacity CA2 is connected with self output, two-way is divided into after the output of operational amplifier UA1A is connected with resistance RA6, after resistance RA6, a road is connected to the AD mouth of main DSP in core controller, resistance RA7 of separately leading up to after resistance RA6 is connected to the inverting input of comparator UA3D, the in-phase input end of comparator UA3D connects+5V voltage by resistance RA8, the in-phase input end of comparator UA3D is also by resistance RA9 parallel with one another, electric capacity CA149 ground connection, the output of comparator UA3D is connected to the negative electrode of a diode DA1, the anode of diode DA1 is connected to FPGA in core controller, the anode of diode DA1 also accesses+5V voltage by pull-up resistor RA11, reverse diode DA2 is also in series with successively between the output of comparator UA3D and self in-phase input end, resistance RA10.
Described a kind of SVG control module, it is characterized in that: in sampling conditioning module, line voltage sampling and zero cross detection circuit comprise the operational amplifier UA2B that model is TL074IDRSM, model is the comparator UA3B of LM239DRASM, voltage transformer pt 107, the resistance RA408 of one of them input of voltage transformer pt 107 by connecting successively, resistance RA402 accesses electrical network positive voltage, the resistance RA604 of another input of voltage transformer pt 107 by connecting successively, resistance RA603 accesses electrical network negative voltage, resistance RA34 parallel with one another is connected with between two outputs of voltage transformer pt 107, resistance RA403, an output of voltage transformer pt 107 is also connected with the in-phase input end of operational amplifier UA2B by resistance RA35, another output of voltage transformer pt 107 is also connected with the inverting input of operational amplifier UA2B by resistance RA37, and also pass through wired earth between resistance RA37 and voltage transformer pt 107 output, the in-phase input end of operational amplifier UA2B is also by resistance RA36 parallel with one another, electric capacity CA13 accesses 1.5V voltage, the output of operational amplifier UA2B is respectively by resistance RA39, resistance RA40 is connected in core controller main, from the AD mouth of DSP, the output of operational amplifier UA2B is also by resistance RA38 parallel with one another, electric capacity CA14 is connected with self inverting input, the inverting input of comparator UA3B is connected with the output of operational amplifier UA2B by resistance RA41, the inverting input of comparator UA3B is also by electric capacity CA15 ground connection, the in-phase input end of comparator UA3B accesses 3V reference voltage by resistance RA42, the in-phase input end of comparator UA3B is also by resistance RA43 ground connection, the output of comparator UA3B accesses+5V voltage by resistance RA45, the output of comparator UA3B is also respectively by resistance RA46, resistance RA47 is connected in core controller main, from the AD mouth of DSP, and the reverse diode DA4 of the output of comparator UA3B also by connecting successively, resistance RA44 is connected with self in-phase input end.
Described a kind of SVG control module, it is characterized in that: in sampling conditioning module, inductive current sampling and DC component detection circuit comprise the operational amplifier UA6B that model is TL074IDRSM, UA6A, UA6C, UA6D, wherein the in-phase input end of operational amplifier UA6B accesses the current transformer of inductance measuring electric current in SVG by resistance RA103, the in-phase input end of operational amplifier UA6B is also by resistance RA104 parallel with one another, electric capacity CA47 ground connection, the inverting input of operational amplifier UA6B is by resistance RA105, resistance RA101 and RA102 connected with resistance RA105 more parallel with one another accesses the current transformer of inductance measuring electric current in SVG, and draw wired earth between resistance RA105 and resistance RA101 and RA102 parallel with one another, the inverting input of operational amplifier UA6B is also by resistance RA106 parallel with one another, electric capacity CA48 is connected with the output of self, the output of operational amplifier UA6B is connected with the in-phase input end of operational amplifier UA6A by resistance RA107, and the output of operational amplifier UA6B also connects in contrary diode access core controller main respectively by two, from the AD mouth of DSP, operational amplifier UA6A just, negative power end connects+12V respectively,-12V voltage, the in-phase input end of operational amplifier UA6A is also by resistance RA108 parallel with one another, electric capacity CA49 accesses 1.5 bias voltages, the reverse input end of operational amplifier UA6A is by resistance RA109 ground connection, the reverse input end of operational amplifier UA6A is also by resistance RA110 parallel with one another, electric capacity CA50 is connected with the output of self, the output of operational amplifier UA6A accesses the controller in SVG by resistance RA111, the resistance RA113 of in-phase input end by connecting successively of operational amplifier UA6C, RA112 is connected with the output of operational amplifier UA6B, the in-phase input end of operational amplifier UA6C is also by electric capacity CA52 ground connection, the inverting input of operational amplifier UA6C accesses between resistance RA113 and resistance RA112 by electric capacity CA51, the inverting input of operational amplifier UA6C is also connected with self output, the output of operational amplifier UA6C is connected with the in-phase input end of operational amplifier UA6D by resistance RA114, the in-phase input end of operational amplifier UA6D is also by resistance RA115 parallel with one another, electric capacity CA53 accesses 1.5V bias voltage, the inverting input of operational amplifier UA6D is by resistance RA116 ground connection, the inverting input of operational amplifier UA6D is also by resistance RA117 parallel with one another, electric capacity CA54 is connected with self output, the output of operational amplifier UA6D is respectively by resistance RA118, resistance RA119 accesses in core controller main, from the AD mouth of DSP.
Described a kind of SVG control module, it is characterized in that: in sampling conditioning module, inductive current current foldback circuit comprises the operational amplifier UA7A that model is TL074IDRSM, UA7B, and model is the comparator UA8A of LM239DRASM, UA8B, the in-phase input end of operational amplifier UA7B is successively by resistance RA132, resistance RA130 parallel with one another and electric capacity CA59, resistance RA131 parallel with one another and electric capacity CA60, resistance RA140 is connected with the inverting input of operational amplifier UA7A, and node ground connection between the parallel branch that forms of the parallel branch that forms of resistance RA130 and electric capacity CA59 and resistance RA131 and electric capacity CA60, between resistance RA130 and electric capacity CA59, inductor current signal in SVG main power circuit is accessed respectively between resistance RA130 and electric capacity CA59, the inverting input of operational amplifier UA7B is connected with self output by resistance RA133, the output of operational amplifier UA7B is connected with the inverting input of comparator UA8B by resistance RA134, the inverting input of comparator UA8B is also by electric capacity CA61 ground connection, the in-phase input end of comparator UA8B accesses+12V voltage by resistance RA135, the in-phase input end of comparator UA8B is also connected with resistance RA136 in turn to output, the diode DA10 of forward, the output of comparator UA8B is successively by reverse diode DA9, resistance RA138 is connected with the base stage of a triode QA2, the output of comparator UA8B also accesses+12V voltage by pull-up resistor RA137, collector electrode access+5V the voltage of triode QA2, the emitter of triode QA2 is connected to FPGA in core controller, and the emitter of triode QA2 is also by resistance RA139 ground connection, resistance RA142 is connected with between the inverting input of operational amplifier UA7A and self output, the in-phase input end of operational amplifier UA7A is by resistance RA141 ground connection, positive power source terminal access+12V the voltage of operational amplifier UA7A, and the positive power source terminal of operational amplifier UA7A is also by electric capacity CA62 ground connection, negative power end access-12V the voltage of operational amplifier UA7A, and the negative power end of operational amplifier UA7A is also by electric capacity CA63 ground connection, the output of operational amplifier UA7A is connected with the inverting input of comparator UA8A by resistance RA143, the inverting input of comparator UA8A is also by electric capacity CA64 ground connection, , the in-phase input end of comparator UA8A is connected with the in-phase input end of comparator UA8B, and the in-phase input end of comparator UA8A is successively by connector JNA1, resistance RA144 ground connection, and resistance RA145 parallel with one another, electric capacity CA66 ground connection, the in-phase input end of comparator UA8A is also connected with resistance RA146 in turn to output, the diode DA11 of forward, the positive power source terminal of comparator UA8A connects+12V voltage, the positive power source terminal of comparator UA8A is also by electric capacity CA67 ground connection, the negative power end ground connection of comparator UA8A, the output of comparator UA8A is by electric capacity CA68 ground connection, and the output of comparator UA8A is connected with the output of comparator UA8B, the output of comparator UA8A also accesses FPGA in core controller.
Described a kind of SVG control module, it is characterized in that: in sampling conditioning module, IGBT temperature sample circuit comprises the operational amplifier UA11C that model is TL074IDRSM, the in-phase input end of operational amplifier UA11C is successively by resistance RA202, resistance RA201 accesses+15V voltage, the in-phase input end of operational amplifier UA11C is also by resistance RA203 parallel with one another, electric capacity CA93 ground connection, the thermistor that in SVG main power circuit, IGBT is built-in is connected to resistance RA202 by lead-in wire, between resistance RA201, the inverting input of operational amplifier UA11C is by resistance RA204 ground connection, the inverting input of operational amplifier UA11C is also by resistance RA205 parallel with one another, electric capacity CA94 is connected with self output, the output of operational amplifier UA11C is connected with the AD mouth of DSP main in core controller by resistance RA206.
The present invention can measure multiple parameters of electric power of main power circuit in SVG, and performs corresponding defencive function, has fast response time simultaneously, controls simple advantage, can meet the demand of electric power system.
Accompanying drawing explanation
Fig. 1 is overall structure block diagram of the present invention.
Fig. 2 is core controller part-structure block diagram of the present invention.
Fig. 3 is that invention relay controls to return modular circuit structure chart with state.
Fig. 4 is DC voltage of the present invention sampling and overvoltage crowbar structure chart.
Fig. 5 is line voltage of the present invention sampling and zero cross detection circuit structure chart.
Fig. 6 is inductive current of the present invention sampling and DC component detection circuit structure chart.
Fig. 7 is inductive current current foldback circuit structure chart of the present invention.
Fig. 8 is IGBT temperature sample circuit structure chart of the present invention.
Embodiment
As shown in Figure 1 and Figure 2, a kind of SVG control module, comprise core controller, core controller have access to sampling conditioning module, driver module, Control and state return module, wherein core controller is respectively the DSP of TMS320F28335 by two panels model, and a slice model be EP2C8 FPGA structure form, wherein a slice DSP is main DSP, another sheet DSP is from DSP, is connected between master and slave DPS by spi bus, and master and slave DSP is connected with communication between FPGA respectively;
Sampling conditioning module comprises DC voltage sampling and overvoltage crowbar, line voltage sampling and zero cross detection circuit, inductive current sampling and DC component detection circuit, inductive current current foldback circuit, IGBT temperature sample circuit, in sampling conditioning module, each circuit input accesses SVG main power circuit respectively, and in sampling conditioning module, each circuit exports and accesses core controller respectively;
Driver module is formed by driving the special driver module of keyset, Concept, keyset is driven to be connected with main in core controller DSP, FPGA respectively, the special driver module access of Concept drives keyset, and the special driver module of Concept is connected with each IGBT in SVG main power circuit;
As shown in Figure 3, Control and state return module and comprise metal-oxide-semiconductor QC6, model in auxiliary contact access SVG main power circuit is the relay of G2RG-2A4, model is the optocoupler U20 of PC817, the grid of metal-oxide-semiconductor QC6 accesses main DSP in core controller by resistance R54, the source ground of metal-oxide-semiconductor QC6, and the grid of metal-oxide-semiconductor QC6 is also by resistance R55 parallel with one another, electric capacity C49 is connected with source electrode, the drain electrode of metal-oxide-semiconductor QC6 is connected with the pin 6 of relay, the pin 1 of relay connects+24V voltage, and the pin 1 of relay is connected with self pin 6 by reverse diode D6, the pin 1 of relay is also by the source electrode ground connection altogether of electric capacity C176 and metal-oxide-semiconductor, the pin 2 of relay is connected with the pin 1 of optocoupler U20 by resistance R57, the pin 3 of relay connects+24V voltage, the pin 3 of relay is also by electric capacity C166 ground connection, the pin 4 of relay connects 220V voltage, the pin 4 of relay is also successively by electric capacity C50, resistance R56 accesses FPGA in core controller, the pin 5 of relay accesses FPGA in core controller, pin 2 ground connection of optocoupler, the pin 3 of optocoupler is by resistance R58 parallel with one another, electric capacity C52 ground connection, the pin 3 of optocoupler is also connected with the relay auxiliary contact be arranged in SVG main power circuit by wire, the pin 4 of optocoupler accesses+5V voltage, the pin 4 of optocoupler is also by electric capacity C137 ground connection.
As shown in Figure 4, in sampling conditioning module, DC voltage sampling and overvoltage crowbar comprise the operational amplifier UA1A that model is TL074IDRSM, and model is the comparator UA3D of LM239DRASM, operational amplifier UA1A just, negative power end connects+12V voltage respectively,-12V voltage, the in-phase input end of operational amplifier UA1A accesses the voltage signal of DC voltage instrument transformer in SVG main power circuit by resistance RA2, the in-phase input end of operational amplifier UA1A is also by resistance RA3 parallel with one another, electric capacity CA1 ground connection, the inverting input of operational amplifier UA1A is by resistance RA4 ground connection, the inverting input of operational amplifier UA1A is also by resistance RA5 parallel with one another, electric capacity CA2 is connected with self output, two-way is divided into after the output of operational amplifier UA1A is connected with resistance RA6, after resistance RA6, a road is connected to the AD mouth of main DSP in core controller, resistance RA7 of separately leading up to after resistance RA6 is connected to the inverting input of comparator UA3D, the in-phase input end of comparator UA3D connects+5V voltage by resistance RA8, the in-phase input end of comparator UA3D is also by resistance RA9 parallel with one another, electric capacity CA149 ground connection, the output of comparator UA3D is connected to the negative electrode of a diode DA1, the anode of diode DA1 is connected to FPGA in core controller, the anode of diode DA1 also accesses+5V voltage by pull-up resistor RA11, reverse diode DA2 is also in series with successively between the output of comparator UA3D and self in-phase input end, resistance RA10.
As shown in Figure 5, in sampling conditioning module, line voltage sampling and zero cross detection circuit comprise the operational amplifier UA2B that model is TL074IDRSM, model is the comparator UA3B of LM239DRASM, voltage transformer pt 107, the resistance RA408 of one of them input of voltage transformer pt 107 by connecting successively, resistance RA402 accesses electrical network positive voltage, the resistance RA604 of another input of voltage transformer pt 107 by connecting successively, resistance RA603 accesses electrical network negative voltage, resistance RA34 parallel with one another is connected with between two outputs of voltage transformer pt 107, resistance RA403, an output of voltage transformer pt 107 is also connected with the in-phase input end of operational amplifier UA2B by resistance RA35, another output of voltage transformer pt 107 is also connected with the inverting input of operational amplifier UA2B by resistance RA37, and also pass through wired earth between resistance RA37 and voltage transformer pt 107 output, the in-phase input end of operational amplifier UA2B is also by resistance RA36 parallel with one another, electric capacity CA13 accesses 1.5V voltage, the output of operational amplifier UA2B is respectively by resistance RA39, resistance RA40 is connected in core controller main, from the AD mouth of DSP, the output of operational amplifier UA2B is also by resistance RA38 parallel with one another, electric capacity CA14 is connected with self inverting input, the inverting input of comparator UA3B is connected with the output of operational amplifier UA2B by resistance RA41, the inverting input of comparator UA3B is also by electric capacity CA15 ground connection, the in-phase input end of comparator UA3B accesses 3V reference voltage by resistance RA42, the in-phase input end of comparator UA3B is also by resistance RA43 ground connection, the output of comparator UA3B accesses+5V voltage by resistance RA45, the output of comparator UA3B is also respectively by resistance RA46, resistance RA47 is connected in core controller main, from the AD mouth of DSP, and the reverse diode DA4 of the output of comparator UA3B also by connecting successively, resistance RA44 is connected with self in-phase input end.
As shown in Figure 6, in sampling conditioning module, inductive current sampling and DC component detection circuit comprise the operational amplifier UA6B that model is TL074IDRSM, UA6A, UA6C, UA6D, wherein the in-phase input end of operational amplifier UA6B accesses the current transformer of inductance measuring electric current in SVG by resistance RA103, the in-phase input end of operational amplifier UA6B is also by resistance RA104 parallel with one another, electric capacity CA47 ground connection, the inverting input of operational amplifier UA6B is by resistance RA105, resistance RA101 and RA102 connected with resistance RA105 more parallel with one another accesses the current transformer of inductance measuring electric current in SVG, and draw wired earth between resistance RA105 and resistance RA101 and RA102 parallel with one another, the inverting input of operational amplifier UA6B is also by resistance RA106 parallel with one another, electric capacity CA48 is connected with the output of self, the output of operational amplifier UA6B is connected with the in-phase input end of operational amplifier UA6A by resistance RA107, and the output of operational amplifier UA6B also connects in contrary diode access core controller main respectively by two, from the AD mouth of DSP, operational amplifier UA6A just, negative power end connects+12V respectively,-12V voltage, the in-phase input end of operational amplifier UA6A is also by resistance RA108 parallel with one another, electric capacity CA49 accesses 1.5 bias voltages, the reverse input end of operational amplifier UA6A is by resistance RA109 ground connection, the reverse input end of operational amplifier UA6A is also by resistance RA110 parallel with one another, electric capacity CA50 is connected with the output of self, the output of operational amplifier UA6A accesses the controller in SVG by resistance RA111, the resistance RA113 of in-phase input end by connecting successively of operational amplifier UA6C, RA112 is connected with the output of operational amplifier UA6B, the in-phase input end of operational amplifier UA6C is also by electric capacity CA52 ground connection, the inverting input of operational amplifier UA6C accesses between resistance RA113 and resistance RA112 by electric capacity CA51, the inverting input of operational amplifier UA6C is also connected with self output, the output of operational amplifier UA6C is connected with the in-phase input end of operational amplifier UA6D by resistance RA114, the in-phase input end of operational amplifier UA6D is also by resistance RA115 parallel with one another, electric capacity CA53 accesses 1.5V bias voltage, the inverting input of operational amplifier UA6D is by resistance RA116 ground connection, the inverting input of operational amplifier UA6D is also by resistance RA117 parallel with one another, electric capacity CA54 is connected with self output, the output of operational amplifier UA6D is respectively by resistance RA118, resistance RA119 accesses in core controller main, from the AD mouth of DSP.
As shown in Figure 7, in sampling conditioning module, inductive current current foldback circuit comprises the operational amplifier UA7A that model is TL074IDRSM, UA7B, and model is the comparator UA8A of LM239DRASM, UA8B, the in-phase input end of operational amplifier UA7B is successively by resistance RA132, resistance RA130 parallel with one another and electric capacity CA59, resistance RA131 parallel with one another and electric capacity CA60, resistance RA140 is connected with the inverting input of operational amplifier UA7A, and node ground connection between the parallel branch that forms of the parallel branch that forms of resistance RA130 and electric capacity CA59 and resistance RA131 and electric capacity CA60, between resistance RA130 and electric capacity CA59, inductor current signal in SVG main power circuit is accessed respectively between resistance RA130 and electric capacity CA59, the inverting input of operational amplifier UA7B is connected with self output by resistance RA133, the output of operational amplifier UA7B is connected with the inverting input of comparator UA8B by resistance RA134, the inverting input of comparator UA8B is also by electric capacity CA61 ground connection, the in-phase input end of comparator UA8B accesses+12V voltage by resistance RA135, the in-phase input end of comparator UA8B is also connected with resistance RA136 in turn to output, the diode DA10 of forward, the output of comparator UA8B is successively by reverse diode DA9, resistance RA138 is connected with the base stage of a triode QA2, the output of comparator UA8B also accesses+12V voltage by pull-up resistor RA137, collector electrode access+5V the voltage of triode QA2, the emitter of triode QA2 is connected to FPGA in core controller, and the emitter of triode QA2 is also by resistance RA139 ground connection, resistance RA142 is connected with between the inverting input of operational amplifier UA7A and self output, the in-phase input end of operational amplifier UA7A is by resistance RA141 ground connection, positive power source terminal access+12V the voltage of operational amplifier UA7A, and the positive power source terminal of operational amplifier UA7A is also by electric capacity CA62 ground connection, negative power end access-12V the voltage of operational amplifier UA7A, and the negative power end of operational amplifier UA7A is also by electric capacity CA63 ground connection, the output of operational amplifier UA7A is connected with the inverting input of comparator UA8A by resistance RA143, the inverting input of comparator UA8A is also by electric capacity CA64 ground connection, , the in-phase input end of comparator UA8A is connected with the in-phase input end of comparator UA8B, and the in-phase input end of comparator UA8A is successively by connector JNA1, resistance RA144 ground connection, and resistance RA145 parallel with one another, electric capacity CA66 ground connection, the in-phase input end of comparator UA8A is also connected with resistance RA146 in turn to output, the diode DA11 of forward, the positive power source terminal of comparator UA8A connects+12V voltage, the positive power source terminal of comparator UA8A is also by electric capacity CA67 ground connection, the negative power end ground connection of comparator UA8A, the output of comparator UA8A is by electric capacity CA68 ground connection, and the output of comparator UA8A is connected with the output of comparator UA8B, the output of comparator UA8A also accesses FPGA in core controller.
As shown in Figure 8, in sampling conditioning module, IGBT temperature sample circuit comprises the operational amplifier UA11C that model is TL074IDRSM, the in-phase input end of operational amplifier UA11C is successively by resistance RA202, resistance RA201 accesses+15V voltage, the in-phase input end of operational amplifier UA11C is also by resistance RA203 parallel with one another, electric capacity CA93 ground connection, the thermistor that in SVG main power circuit, IGBT is built-in is connected to resistance RA202 by lead-in wire, between resistance RA201, the inverting input of operational amplifier UA11C is by resistance RA204 ground connection, the inverting input of operational amplifier UA11C is also by resistance RA205 parallel with one another, electric capacity CA94 is connected with self output, the output of operational amplifier UA11C is connected with the AD mouth of DSP main in core controller by resistance RA206.
In the present invention, core controller adopts the digital control platform be made up of two panels DSP and a slice FPGA, wherein the main DSP of a slice is used for the calculating of reactive current, another sheet is then mainly used in the calculating of single harmonic component from DSP, SPI is adopted to realize data communication between DSP, by FPGA is configured to two-port RAM, the fast data exchange between DSP can also be carried out simultaneously.In addition, main DSP by I2C agreement read-write EEPROM, can record the important parameter that some users revised, has the function of preserving history Update Table; By RS485 agreement, the functions such as PWM is synchronous also can be realized.
Repeat circuit of the present invention controls to return module with state and mainly exports control signal to relay by SVG middle controller, then by the device in Control main power circuit; In addition, auxiliary contact return its status signal, and core controller sent into by the state return circuit that consists of optocoupler, finally by controller read state signal, realize that it is digital control.
In the present invention, the pwm signal that main DSP produces first sends into the special driver module of Concept after keyset of overdriving, and provides the drive singal of IGBT in SVG main power circuit.In addition, the guard signal that the special driver module of Concept produces when fault, also after keyset of overdriving, sends into master control borad; All guard signals all first carry out after logical process through FPGA, then send into main DSP carry out interruption protection, hardware protection can quick closedown drive, enter guard mode.
The present invention samples in conditioning module, and DC voltage sampling and overvoltage crowbar form differential amplifier circuit by the electronic devices and components of operational amplifier UA1A and connection thereof, form hysteresis comparator circuit by the electronic devices and components of comparator UA3D and connection thereof.In SVG main power circuit, DC voltage is first after voltage transformer gathers, then after differential amplifier circuit, send into the AD mouth of core controller, namely obtains direct voltage sampled signal.In addition, modulate circuit output signal is sent into hysteresis comparator circuit, compares with set voltage protection value, namely obtain overvoltage protection signal, this signal is sent into core controller thus realizes the function of overvoltage protection.
The present invention samples in conditioning module, and line voltage sampling and zero cross detection circuit form differential amplifier circuit by the electronic device of operational amplifier UA2B and connection thereof, form hysteresis comparator by the electronic device of comparator UA3B and connection thereof.Line voltage, first through voltage transformer, then through differential amplifier circuit, and increases the AD mouth sending into core controller after 1.5V is biased respectively, namely obtains line voltage sampled signal.In addition, voltage signal is sent into hysteresis comparator, compare with 3V reference voltage and obtain voltage zero-crossing signal, send into core controller, for the change of detection of grid frequency.
The present invention samples in conditioning module, and inductive current sampling and DC component detection circuit form differential amplifier circuit respectively by operational amplifier UA6B, UA6C, UA6D, form second-order low-pass filter by operational amplifier UA6A.The inductive current that current transformer detects first through differential amplifier circuit, on the one hand through difference channel and increase 1.5V biased after send into core controller respectively; On the other hand, first through second-order low-pass filter filtering, then send into core controller respectively after difference channel, for hardware detection and the protection of inductive current direct current biasing.
The present invention samples in conditioning module; in inductive current current foldback circuit; the current signal of inductive current is after the follower that operational amplifier UA7B is formed; send into the hysteresis comparator that comparator UA8B is formed; compare with set current protection value; namely obtain overcurrent protection signal, this signal is sent in core controller, realizes the function of overcurrent protection.
The present invention samples in conditioning module; IGBT temperature sample circuit; thermistor receives temperature sampling circuit by lead-in wire; connect with a fixed resistance; dividing potential drop is carried out to 15V power supply, the differential amplifier circuit that the voltage signal obtained is consisted of operational amplifier UA11C, when SVG main power circuit IGBT temperature changes; magnitude of voltage corresponding to the temperature of highest temperature IGBT sends into the AD mouth of core controller, realizes detection and the protection of temperature.
Claims (6)
1. a SVG control module, it is characterized in that: comprise core controller, core controller has access to sampling conditioning module, driver module, Control and state and returns module, wherein core controller is respectively the DSP of TMS320F28335 by two panels model, and a slice model be EP2C8 FPGA build form, wherein a slice DSP is main DSP, and another sheet DSP is from DSP, connected by spi bus between master and slave DPS, master and slave DSP is connected with communication between FPGA respectively;
Described sampling conditioning module comprises DC voltage sampling and overvoltage crowbar, line voltage sampling and zero cross detection circuit, inductive current sampling and DC component detection circuit, inductive current current foldback circuit, IGBT temperature sample circuit, in sampling conditioning module, each circuit input accesses SVG main power circuit respectively, and in sampling conditioning module, each circuit exports and accesses core controller respectively;
Described driver module is formed by driving the special driver module of keyset, Concept, keyset is driven to be connected with main in core controller DSP, FPGA respectively, the special driver module access of Concept drives keyset, and the special driver module of Concept is connected with each IGBT in SVG main power circuit;
Described Control and state return module and comprise metal-oxide-semiconductor QC6, model in auxiliary contact access SVG main power circuit is the relay of G2RG-2A4, model is the optocoupler U20 of PC817, the grid of metal-oxide-semiconductor QC6 accesses main DSP in core controller by resistance R54, the source ground of metal-oxide-semiconductor QC6, and the grid of metal-oxide-semiconductor QC6 is also by resistance R55 parallel with one another, electric capacity C49 is connected with source electrode, the drain electrode of metal-oxide-semiconductor QC6 is connected with the pin 6 of relay, the pin 1 of relay connects+24V voltage, and the pin 1 of relay is connected with self pin 6 by reverse diode D6, the pin 1 of relay is also by the source electrode ground connection altogether of electric capacity C176 and metal-oxide-semiconductor, the pin 2 of relay is connected with the pin 1 of optocoupler U20 by resistance R57, the pin 3 of relay connects+24V voltage, the pin 3 of relay is also by electric capacity C166 ground connection, the pin 4 of relay connects 220V voltage, the pin 4 of relay is also successively by electric capacity C50, resistance R56 accesses FPGA in core controller, the pin 5 of relay accesses FPGA in core controller, pin 2 ground connection of optocoupler, the pin 3 of optocoupler is by resistance R58 parallel with one another, electric capacity C52 ground connection, the pin 3 of optocoupler is also connected with the relay auxiliary contact be arranged in SVG main power circuit by wire, the pin 4 of optocoupler accesses+5V voltage, the pin 4 of optocoupler is also by electric capacity C137 ground connection.
2. a kind of SVG control module according to claim 1, it is characterized in that: in sampling conditioning module, DC voltage sampling and overvoltage crowbar comprise the operational amplifier UA1A that model is TL074IDRSM, and model is the comparator UA3D of LM239DRASM, operational amplifier UA1A just, negative power end connects+12V voltage respectively,-12V voltage, the in-phase input end of operational amplifier UA1A accesses the voltage signal of DC voltage instrument transformer in SVG main power circuit by resistance RA2, the in-phase input end of operational amplifier UA1A is also by resistance RA3 parallel with one another, electric capacity CA1 ground connection, the inverting input of operational amplifier UA1A is by resistance RA4 ground connection, the inverting input of operational amplifier UA1A is also by resistance RA5 parallel with one another, electric capacity CA2 is connected with self output, two-way is divided into after the output of operational amplifier UA1A is connected with resistance RA6, after resistance RA6, a road is connected to the AD mouth of main DSP in core controller, resistance RA7 of separately leading up to after resistance RA6 is connected to the inverting input of comparator UA3D, the in-phase input end of comparator UA3D connects+5V voltage by resistance RA8, the in-phase input end of comparator UA3D is also by resistance RA9 parallel with one another, electric capacity CA149 ground connection, the output of comparator UA3D is connected to the negative electrode of a diode DA1, the anode of diode DA1 is connected to FPGA in core controller, the anode of diode DA1 also accesses+5V voltage by pull-up resistor RA11, reverse diode DA2 is also in series with successively between the output of comparator UA3D and self in-phase input end, resistance RA10.
3. a kind of SVG control module according to claim 1, it is characterized in that: in sampling conditioning module, line voltage sampling and zero cross detection circuit comprise the operational amplifier UA2B that model is TL074IDRSM, model is the comparator UA3B of LM239DRASM, voltage transformer pt 107, the resistance RA408 of one of them input of voltage transformer pt 107 by connecting successively, resistance RA402 accesses electrical network positive voltage, the resistance RA604 of another input of voltage transformer pt 107 by connecting successively, resistance RA603 accesses electrical network negative voltage, resistance RA34 parallel with one another is connected with between two outputs of voltage transformer pt 107, resistance RA403, an output of voltage transformer pt 107 is also connected with the in-phase input end of operational amplifier UA2B by resistance RA35, another output of voltage transformer pt 107 is also connected with the inverting input of operational amplifier UA2B by resistance RA37, and also pass through wired earth between resistance RA37 and voltage transformer pt 107 output, the in-phase input end of operational amplifier UA2B is also by resistance RA36 parallel with one another, electric capacity CA13 accesses 1.5V voltage, the output of operational amplifier UA2B is respectively by resistance RA39, resistance RA40 is connected in core controller main, from the AD mouth of DSP, the output of operational amplifier UA2B is also by resistance RA38 parallel with one another, electric capacity CA14 is connected with self inverting input, the inverting input of comparator UA3B is connected with the output of operational amplifier UA2B by resistance RA41, the inverting input of comparator UA3B is also by electric capacity CA15 ground connection, the in-phase input end of comparator UA3B accesses 3V reference voltage by resistance RA42, the in-phase input end of comparator UA3B is also by resistance RA43 ground connection, the output of comparator UA3B accesses+5V voltage by resistance RA45, the output of comparator UA3B is also respectively by resistance RA46, resistance RA47 is connected in core controller main, from the AD mouth of DSP, and the reverse diode DA4 of the output of comparator UA3B also by connecting successively, resistance RA44 is connected with self in-phase input end.
4. a kind of SVG control module according to claim 1, it is characterized in that: in sampling conditioning module, inductive current sampling and DC component detection circuit comprise the operational amplifier UA6B that model is TL074IDRSM, UA6A, UA6C, UA6D, wherein the in-phase input end of operational amplifier UA6B accesses the current transformer of inductance measuring electric current in SVG by resistance RA103, the in-phase input end of operational amplifier UA6B is also by resistance RA104 parallel with one another, electric capacity CA47 ground connection, the inverting input of operational amplifier UA6B is by resistance RA105, resistance RA101 and RA102 connected with resistance RA105 more parallel with one another accesses the current transformer of inductance measuring electric current in SVG, and draw wired earth between resistance RA105 and resistance RA101 and RA102 parallel with one another, the inverting input of operational amplifier UA6B is also by resistance RA106 parallel with one another, electric capacity CA48 is connected with the output of self, the output of operational amplifier UA6B is connected with the in-phase input end of operational amplifier UA6A by resistance RA107, and the output of operational amplifier UA6B also connects in contrary diode access core controller main respectively by two, from the AD mouth of DSP, operational amplifier UA6A just, negative power end connects+12V respectively,-12V voltage, the in-phase input end of operational amplifier UA6A is also by resistance RA108 parallel with one another, electric capacity CA49 accesses 1.5 bias voltages, the reverse input end of operational amplifier UA6A is by resistance RA109 ground connection, the reverse input end of operational amplifier UA6A is also by resistance RA110 parallel with one another, electric capacity CA50 is connected with the output of self, the output of operational amplifier UA6A accesses the controller in SVG by resistance RA111, the resistance RA113 of in-phase input end by connecting successively of operational amplifier UA6C, RA112 is connected with the output of operational amplifier UA6B, the in-phase input end of operational amplifier UA6C is also by electric capacity CA52 ground connection, the inverting input of operational amplifier UA6C accesses between resistance RA113 and resistance RA112 by electric capacity CA51, the inverting input of operational amplifier UA6C is also connected with self output, the output of operational amplifier UA6C is connected with the in-phase input end of operational amplifier UA6D by resistance RA114, the in-phase input end of operational amplifier UA6D is also by resistance RA115 parallel with one another, electric capacity CA53 accesses 1.5V bias voltage, the inverting input of operational amplifier UA6D is by resistance RA116 ground connection, the inverting input of operational amplifier UA6D is also by resistance RA117 parallel with one another, electric capacity CA54 is connected with self output, the output of operational amplifier UA6D is respectively by resistance RA118, resistance RA119 accesses in core controller main, from the AD mouth of DSP.
5. a kind of SVG control module according to claim 1, it is characterized in that: in sampling conditioning module, inductive current current foldback circuit comprises the operational amplifier UA7A that model is TL074IDRSM, UA7B, and model is the comparator UA8A of LM239DRASM, UA8B, the in-phase input end of operational amplifier UA7B is successively by resistance RA132, resistance RA130 parallel with one another and electric capacity CA59, resistance RA131 parallel with one another and electric capacity CA60, resistance RA140 is connected with the inverting input of operational amplifier UA7A, and node ground connection between the parallel branch that forms of the parallel branch that forms of resistance RA130 and electric capacity CA59 and resistance RA131 and electric capacity CA60, between resistance RA130 and electric capacity CA59, inductor current signal in SVG main power circuit is accessed respectively between resistance RA130 and electric capacity CA59, the inverting input of operational amplifier UA7B is connected with self output by resistance RA133, the output of operational amplifier UA7B is connected with the inverting input of comparator UA8B by resistance RA134, the inverting input of comparator UA8B is also by electric capacity CA61 ground connection, the in-phase input end of comparator UA8B accesses+12V voltage by resistance RA135, the in-phase input end of comparator UA8B is also connected with resistance RA136 in turn to output, the diode DA10 of forward, the output of comparator UA8B is successively by reverse diode DA9, resistance RA138 is connected with the base stage of a triode QA2, the output of comparator UA8B also accesses+12V voltage by pull-up resistor RA137, collector electrode access+5V the voltage of triode QA2, the emitter of triode QA2 is connected to FPGA in core controller, and the emitter of triode QA2 is also by resistance RA139 ground connection, resistance RA142 is connected with between the inverting input of operational amplifier UA7A and self output, the in-phase input end of operational amplifier UA7A is by resistance RA141 ground connection, positive power source terminal access+12V the voltage of operational amplifier UA7A, and the positive power source terminal of operational amplifier UA7A is also by electric capacity CA62 ground connection, negative power end access-12V the voltage of operational amplifier UA7A, and the negative power end of operational amplifier UA7A is also by electric capacity CA63 ground connection, the output of operational amplifier UA7A is connected with the inverting input of comparator UA8A by resistance RA143, the inverting input of comparator UA8A is also by electric capacity CA64 ground connection, , the in-phase input end of comparator UA8A is connected with the in-phase input end of comparator UA8B, and the in-phase input end of comparator UA8A is successively by connector JNA1, resistance RA144 ground connection, and resistance RA145 parallel with one another, electric capacity CA66 ground connection, the in-phase input end of comparator UA8A is also connected with resistance RA146 in turn to output, the diode DA11 of forward, the positive power source terminal of comparator UA8A connects+12V voltage, the positive power source terminal of comparator UA8A is also by electric capacity CA67 ground connection, the negative power end ground connection of comparator UA8A, the output of comparator UA8A is by electric capacity CA68 ground connection, and the output of comparator UA8A is connected with the output of comparator UA8B, the output of comparator UA8A also accesses FPGA in core controller.
6. a kind of SVG control module according to claim 1, it is characterized in that: in sampling conditioning module, IGBT temperature sample circuit comprises the operational amplifier UA11C that model is TL074IDRSM, the in-phase input end of operational amplifier UA11C is successively by resistance RA202, resistance RA201 accesses+15V voltage, the in-phase input end of operational amplifier UA11C is also by resistance RA203 parallel with one another, electric capacity CA93 ground connection, the thermistor that in SVG main power circuit, IGBT is built-in is connected to resistance RA202 by lead-in wire, between resistance RA201, the inverting input of operational amplifier UA11C is by resistance RA204 ground connection, the inverting input of operational amplifier UA11C is also by resistance RA205 parallel with one another, electric capacity CA94 is connected with self output, the output of operational amplifier UA11C is connected with the AD mouth of DSP main in core controller by resistance RA206.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420335A (en) * | 2017-06-14 | 2017-12-01 | 广州三晶电气股份有限公司 | A kind of fan control circuitry with speed-regulating function and rotation speed monitoring |
| CN107742988A (en) * | 2017-10-19 | 2018-02-27 | 绵阳市维博电子有限责任公司 | A kind of sine-wave power for meeting perceptual load frequent break-make and its application |
| CN108023510A (en) * | 2017-12-28 | 2018-05-11 | 江苏集萃智能制造技术研究所有限公司 | It is a kind of to let out energy circuit for servomotor braking |
| CN109041311A (en) * | 2018-08-13 | 2018-12-18 | 中国科学院长春光学精密机械与物理研究所 | A kind of adaptive digital locking phase controller |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020036911A1 (en) * | 2000-09-22 | 2002-03-28 | Sanyo Denki Co., Ltd. | Uniterruptible power system |
| CN202424172U (en) * | 2011-11-16 | 2012-09-05 | 安徽立卓智能电网科技有限公司 | Active power filter |
| CN102684203A (en) * | 2012-04-24 | 2012-09-19 | 安徽华祝电气技术有限公司 | Method for carrying out intelligent control on dynamic reactive power compensation of SVG (TSC) (static var generator (thyristor switched capacitor)) |
| CN103311932A (en) * | 2013-05-29 | 2013-09-18 | 国电南京自动化股份有限公司 | Double-DSP (digital signal processor) control system based on chained SVG (scalable vector graphics) |
| CN103545822A (en) * | 2013-10-18 | 2014-01-29 | 海特尔机电工程技术（马鞍山）有限公司 | Reactive power adjustment device |
| CN204190391U (en) * | 2014-10-17 | 2015-03-04 | 佛山市顺德区胜业电气有限公司 | Volume static reactive generator in multiplex |
| CN104485674A (en) * | 2014-12-18 | 2015-04-01 | 深圳市三和电力科技有限公司 | Dual-DSP high-speed static reactive generation module |
-
2015
- 2015-05-27 CN CN201510279619.5A patent/CN104967131A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020036911A1 (en) * | 2000-09-22 | 2002-03-28 | Sanyo Denki Co., Ltd. | Uniterruptible power system |
| CN202424172U (en) * | 2011-11-16 | 2012-09-05 | 安徽立卓智能电网科技有限公司 | Active power filter |
| CN102684203A (en) * | 2012-04-24 | 2012-09-19 | 安徽华祝电气技术有限公司 | Method for carrying out intelligent control on dynamic reactive power compensation of SVG (TSC) (static var generator (thyristor switched capacitor)) |
| CN103311932A (en) * | 2013-05-29 | 2013-09-18 | 国电南京自动化股份有限公司 | Double-DSP (digital signal processor) control system based on chained SVG (scalable vector graphics) |
| CN103545822A (en) * | 2013-10-18 | 2014-01-29 | 海特尔机电工程技术（马鞍山）有限公司 | Reactive power adjustment device |
| CN204190391U (en) * | 2014-10-17 | 2015-03-04 | 佛山市顺德区胜业电气有限公司 | Volume static reactive generator in multiplex |
| CN104485674A (en) * | 2014-12-18 | 2015-04-01 | 深圳市三和电力科技有限公司 | Dual-DSP high-speed static reactive generation module |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420335A (en) * | 2017-06-14 | 2017-12-01 | 广州三晶电气股份有限公司 | A kind of fan control circuitry with speed-regulating function and rotation speed monitoring |
| CN107742988A (en) * | 2017-10-19 | 2018-02-27 | 绵阳市维博电子有限责任公司 | A kind of sine-wave power for meeting perceptual load frequent break-make and its application |
| CN107742988B (en) * | 2017-10-19 | 2020-04-21 | 绵阳市维博电子有限责任公司 | Sine wave power supply capable of meeting frequent on-off of inductive load and method thereof |
| CN108023510A (en) * | 2017-12-28 | 2018-05-11 | 江苏集萃智能制造技术研究所有限公司 | It is a kind of to let out energy circuit for servomotor braking |
| CN109041311A (en) * | 2018-08-13 | 2018-12-18 | 中国科学院长春光学精密机械与物理研究所 | A kind of adaptive digital locking phase controller |
| CN109041311B (en) * | 2018-08-13 | 2021-04-06 | 中国科学院长春光学精密机械与物理研究所 | Self-adaptive digital phase-locked controller |
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