CN117368624B - Double-pulse test energy storage device with active protection function and adjustable parameters - Google Patents
Double-pulse test energy storage device with active protection function and adjustable parameters Download PDFInfo
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- CN117368624B CN117368624B CN202311674822.3A CN202311674822A CN117368624B CN 117368624 B CN117368624 B CN 117368624B CN 202311674822 A CN202311674822 A CN 202311674822A CN 117368624 B CN117368624 B CN 117368624B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 87
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 230000003750 conditioning effect Effects 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims description 33
- 230000006870 function Effects 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
- G01R1/206—Switches for connection of measuring instruments or electric motors to measuring loads
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/36—Overload-protection arrangements or circuits for electric measuring instruments
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The invention discloses a double-pulse test energy storage device with an active protection function and adjustable parameters, which belongs to the technical field of energy storage tests and particularly comprises an energy storage element, an energy storage parameter selection circuit, a current detection circuit, a forced follow current circuit, a current signal conditioning circuit, an overcurrent comparison circuit, a protection control circuit, an energy storage parameter selection control circuit, an upper computer and a control power supply; according to different test requirements, the main control circuit outputs a control signal to automatically select a proper air core inductance value, the maximum value of the current allowed to pass through the air core inductance can be set, and when the current value in the air core inductance exceeds the maximum value, the energy storage device cuts off the air core inductance from the test circuit; when the over-current protection is actively triggered, the invention can output an over-current fault signal, completely cut off the test loop through the control signal, and recover the test loop through the control signal again after the fault is eliminated.
Description
Technical Field
The invention relates to the technical field of energy storage tests, in particular to a double-pulse test energy storage device with an active protection function and adjustable parameters.
Background
Double pulse test energy storage is a test method commonly used in power systems and energy storage systems. In the test, two pulse signals which are mutually separated for a certain time are injected into the energy storage device to be tested, then the response of the device is observed to evaluate the performance and the characteristics of the energy storage device, and the double pulse test energy storage can help engineers and researchers to comprehensively know the dynamic characteristics and the response capacity of the energy storage device, so that the double pulse test energy storage device has important significance in the aspects of evaluating the performance, verifying a model, improving a control strategy and the like of the energy storage system. The testing method is widely applied in the field of power systems and new energy industries, and plays an important role in the research and development of energy storage technologies and practical application.
The existing double-pulse test energy storage scheme is mainly divided into two types, wherein one type is a simple single-coil air core inductor, the head end and the tail end of the double-pulse test circuit are directly connected into the double-pulse test circuit, and only the most basic energy storage function can be realized in the double-pulse test; and the other type is that a plurality of air core inductors are connected in series, wiring terminals are led out from the places where the head end and the tail end are connected in series with the inductors, when the double-pulse test circuit is connected, the head end or the tail end is used as a public access circuit, and the rest terminals select the corresponding wiring terminals to be connected into the test circuit according to the required inductance value, so that the energy storage function required by the double-pulse test is realized.
The first solution has the disadvantage of single function, when performing double pulse test on devices of different specifications, the inductor needs to be replaced manually frequently according to the requirement of the inductance value, and the second solution has the advantage that the requirement of the inductance value can be changed without replacing the inductor and only changing the connecting terminal of the non-common terminal, but still the double pulse test needs to be performed manually, and both solutions do not have an active protection function.
Disclosure of Invention
The invention aims to provide a double-pulse test energy storage device with an active protection function and adjustable parameters, which solves the following technical problems:
in the prior art, when double pulse testing is performed on devices with different specifications, the inductor needs to be frequently and manually replaced according to the requirement of the inductance value, and the device does not have an active protection function.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a double pulse test energy memory with adjustable parameter of initiative protect function, includes energy storage component, energy storage parameter selection circuit, current detection circuit, forced freewheel circuit, current signal conditioning circuit, overcurrent comparison circuit, protection control circuit, energy storage parameter selection control circuit, host computer and control power supply, wherein:
the energy storage element is formed by connecting hollow inductors L1, L2 and L3 in series end to end, wherein the lower end of the L1 is a public end, the connecting ends of the L1 and the L2, the connecting ends of the L2 and the L3 and the upper end of the L3 are all selection ends;
the energy storage parameter selection circuit consists of controllable mechanical switches K1, K2 and K3, wherein any controllable mechanical switch comprises a control part and an execution part, the selection end of each air core inductor is connected with one end of the execution part, and the other ends of all the execution parts are short-circuited;
the current detection circuit comprises a current collector RS and a signal outgoing line, wherein the current collector is used for sampling signals and comprises an active detection device and a passive detection device;
the forced freewheel circuit comprises an execution part of controllable mechanical switches K4 and K5, a discharge resistor RD and a diode D1;
the current signal conditioning circuit comprises a precision operational amplifier U1 and high-precision resistors R1, R2, R3 and R4;
the overcurrent comparison circuit comprises resistors R5 and R6, a comparator U2 and a reference voltage circuit;
the protection control circuit comprises a logic or gate chip U3, switching tubes Q1 and Q2, resistors R7 and R8, a capacitor C1 and control parts of controllable mechanical switches K4 and K5;
the energy storage parameter selection control circuit comprises a control signal processing circuit, resistors R9, R10 and R11, switching tubes Q3, Q4 and Q5 and a control part of controllable mechanical switches K1, K2 and K3.
As a further scheme of the invention: in the energy storage parameter selection circuit, the number of the controllable mechanical switches is the same as that of the air core inductors, and the types of the controllable mechanical switches include, but are not limited to, relays, circuit breakers and air cylinders.
As a further scheme of the invention: in the current detection circuit, the types of the active detection devices include, but are not limited to, an active current sensor and a rogowski coil; the types of passive detection devices include, but are not limited to, sampling resistors, shunts, current transformers, passive current sensors.
As a further scheme of the invention: the current detection circuit comprises:
when the current collector has a current direction requirement, the current input end of the current collector is connected with the common end of the energy storage element, the current output end of the current collector is connected with the external low-voltage end of the energy storage element, and the sampling signal is divided into a sampling positive signal, a sampling negative signal or a ground signal;
when the current collector has no current direction requirement, one end of the current collector is connected with the public end of the energy storage element, the other end of the current collector is connected with the external low-voltage end of the energy storage element, and when current flows into the current collector from the public end of the energy storage element, one end of the current collector with high sampling signal output potential is a sampling positive signal, and one end of the current collector with low sampling signal output potential is a sampling negative signal.
As a further scheme of the invention: in the forced freewheel circuit:
one end of the execution part of the controllable mechanical switch K4 passes through one end of the execution part of the K5 and is connected with one end of the short circuit of the execution parts of the K1, the K2 and the K3, the other end of the execution part of the K4 is connected with one end of the discharge resistor RD, the other end of the discharge resistor RD is connected with the negative electrode of the diode D1, the other end of the execution part of the K5 is connected with the external high voltage end of the energy storage element, and the negative electrode of the diode D1 is connected with the external low voltage end of the energy storage device.
As a further scheme of the invention: the current signal conditioning circuit comprises:
one end of R1 is connected with a sampling negative signal, the other end is connected with one end of R3 and the negative input end of U1, the other end of R3 is connected with the output end of U1, one end of R2 is connected with a sampling positive signal, the other end of R2 is connected with one end of R4 and the positive input end of U1, and the other end of R4 is connected with the ground.
As a further scheme of the invention: the overcurrent comparison circuit comprises:
one end of R5 is connected with the output end of U1, the other end of R5 is connected with one end of R6 and the positive input end of U2, the other end of R6 is connected with the output end of U2, the output end of the reference voltage circuit is connected with the negative input end of U2, and the types of the reference voltage circuit comprise, but are not limited to, a fixed resistor voltage dividing circuit, an adjustable resistor voltage dividing circuit, a parallel DAC circuit, a serial DAC circuit, a communication control DAC circuit and a reference power chip circuit.
As a further scheme of the invention: the protection control circuit comprises:
one input end of the logic OR gate chip U3 is connected with the output end of the comparator U2, the other input end of the logic OR gate chip U3 is connected with a VLOCK signal of the upper computer, the output end of the logic OR gate chip U3 is connected with one end of the R7, the other end of the R7 is connected with a base electrode of the Q1, a collector electrode of the Q1 is connected with one end of the R8, one end of the C1 is connected with a negative end of the K4 control part, the other end of the K4 control part is connected with a control power supply, an emitter electrode of the Q1 is connected with a reference ground, the other end of the C1 is connected with a reference ground, the other end of the K5 control part is connected with a control power supply, an emitter electrode of the Q2 is connected with a reference ground, and the types of the switch tube include, but are not limited by a triode, a MOS tube and a photoelectric coupler.
As a further scheme of the invention: the energy storage parameter selection control circuit comprises:
the number of the signal output ends of the control signal processing circuit is the same as the number of the controllable mechanical switches of the energy storage part, the number of the resistors and the number of the switching tubes;
the signal output end of the control signal processing circuit is respectively connected with one ends of R9, R10 and R11, the other ends of R9, R10 and R11 are respectively connected with the bases of Q3, Q4 and Q5, the emitters of Q3, Q4 and Q5 are respectively connected to the reference ground, the collectors of Q3, Q4 and Q5 are respectively connected with the negative ends of the control parts of K1, K2 and K3, and the other ends of the control parts of K1, K2 and K3 are respectively connected to a control power supply.
As a further scheme of the invention: the control signal processing circuit includes but is not limited to a processor IO port through circuit, a decoder circuit, and a communication signal-to-IO signal circuit.
The invention has the beneficial effects that:
according to different test requirements, the control signal is output through the main control circuit to automatically select a proper air core inductance value, the maximum value of the current allowed to pass through the air core inductance can be set, and when the current value in the air core inductance exceeds the maximum value, the energy storage device can cut off the air core inductance from the test circuit; when the over-current protection is actively triggered, the invention can output an over-current fault signal, and can completely cut off the test loop through the control signal under the condition of need, and the test loop is restored through the control signal after the fault is eliminated.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic circuit configuration of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the invention relates to a double-pulse test energy storage device with an active protection function and adjustable parameters, which comprises an energy storage element, an energy storage parameter selection circuit, a current detection circuit, a forced follow current circuit, a current signal conditioning circuit, an overcurrent comparison circuit, a protection control circuit, an energy storage parameter selection control circuit, an upper computer and a control power supply, wherein:
the energy storage element is formed by connecting hollow inductors L1, L2 and L3 in series end to end, wherein the lower end of the L1 is a public end, the connecting ends of the L1 and the L2, the connecting ends of the L2 and the L3 and the upper end of the L3 are all selection ends;
the energy storage parameter selection circuit consists of controllable mechanical switches K1, K2 and K3, wherein any controllable mechanical switch comprises a control part and an execution part, the selection end of each air core inductor is connected with one end of the execution part, and the other ends of all the execution parts are short-circuited;
the current detection circuit comprises a current collector RS and a signal outgoing line, wherein the current collector is used for sampling signals and comprises an active detection device and a passive detection device;
the forced freewheel circuit comprises an execution part of controllable mechanical switches K4 and K5, a discharge resistor RD and a diode D1;
the current signal conditioning circuit comprises a precision operational amplifier U1 and high-precision resistors R1, R2, R3 and R4;
the overcurrent comparison circuit comprises resistors R5 and R6, a comparator U2 and a reference voltage circuit;
the protection control circuit comprises a logic or gate chip U3, switching tubes Q1 and Q2, resistors R7 and R8, a capacitor C1 and control parts of controllable mechanical switches K4 and K5;
the energy storage parameter selection control circuit comprises a control signal processing circuit, resistors R9, R10 and R11, switching tubes Q3, Q4 and Q5 and a control part of controllable mechanical switches K1, K2 and K3.
Referring to fig. 1, the working principle of the present invention is as follows:
when the device is correctly connected into the double-pulse test platform, firstly, a proper energy storage inductance value is selected according to the parameter specification of a tested device, and a control signal is given under the assumption that the energy storage inductance value required by the tested device is the sum of L1 and L2, after the energy storage inductance value is processed by a control signal processing circuit, the base electrodes of Q3 and Q5 are at a low level, no current flows in K1A, K A, K1B, K B is disconnected, the base electrode of Q4 is at a high level, working current flows in K2A, K2B is closed, a required reference voltage is given by a reference voltage circuit, then a VER fault detection signal is detected, in a normal initial state, the VER fault detection signal is low, at the moment, a VLOCK blocking signal is set low, the output signal of U3 is low, the collector electrode of Q1 is at a high level, no current flows in K4A, the base electrode of Q2 is at a high level, Q2 is conducted, working current flows in K5A, K5B is closed, and the energy storage inductance is completely connected into the double-pulse test platform.
When the double-pulse test works, current flows into a tested device through an inductor and a current collector, a signal acquired by the current collector enters a current signal conditioning circuit and is processed by a high-precision differential amplifying circuit to output a voltage value VC.
Because the current is zero at the initial moment, and the output voltage of U2, namely the VER fault detection signal, is low level after the reference voltage is given, VC enters the overcurrent comparison circuit and is compared with VREF after the voltage division of R5 and R6. When VC is less than (R5+R6) times VERF/R6, the VER fault detection signal is set low, and the system is not operated and continuously operates. When VC is greater than (R5+R6) times VERF/R6, the VER fault detection signal is asserted high, at which point the device enters a measurement fault mode.
After the VER fault detection signal is set high, the U3 logic OR gate outputs a high level, and meanwhile, the blocking signal VLOCK is set high, so that the U3 output high level is not influenced by the VER fault detection signal any more, at the moment, Q1 is conducted, working current exists in K4A, K4B is closed, current in the energy storage inductor begins to flow through a diode D1, meanwhile, charges in C1 are released through Q1, C1 has a time delay effect, after charges in C1 are released, Q2 is closed, no current flows in K5A, K5B is disconnected, the energy storage inductor cuts out a double-pulse test platform, all currents in the inductor flow through D1, and protection of a test device is realized.
When K5B is disconnected, the energy storage inductor enters into a follow current mode, energy in the inductor is consumed on a discharge resistor RD, current in the inductor is gradually reduced, and VC is gradually reduced, but because VER is already set high, VER can increase the voltage of the positive input end of U2 through R6, so that the VER keeps outputting high level before VC is smaller than [ (R5+R6) multiplied by VERF/R6-R5 multiplied by VERF ]/R6, the effect of hysteresis output is achieved, and the re-opening caused after the blocking signal is mistakenly removed is prevented.
When the double-pulse test platform normally tests a device with a certain specification and needs to change the parameters of the energy storage device on line, firstly, a blocking signal VLOCK is set high, K4B is closed, K5B is opened, after the value of VC is detected to be zero, the current in the inductor is zero, the energy is completely released, at this time, the state of K1-K3 can be switched, a new energy storage inductance parameter is selected, after the selection is completed, the blocking signal VLOCK is set low, K4B is opened, K5B is closed, at this time, the parameters of the energy storage device are changed, and a new tested element can be replaced for testing.
When the device is used, the collected VC signals can be compared with the software set values, so that a software protection function is realized, the software protection threshold value can be set to be lower than the hardware protection threshold value, a double protection circuit is formed by the device and the hardware protection circuit, the stability and the reliability of the device are improved, the number of times of protecting the hardware circuit can be reduced, the hardware loss of the device is reduced, and the service life of the device is prolonged.
In a preferred embodiment of the present invention, in the energy storage parameter selection circuit, the number of the controllable mechanical switches is the same as the number of the air core inductors, and the controllable mechanical switches include a relay, a circuit breaker and a cylinder.
In another preferred embodiment of the present invention, in the current detection circuit, the active detection device includes an active current sensor, a rogowski coil; the passive detection device comprises a sampling resistor, a current divider, a current transformer and a passive current sensor.
In a preferred case of the present embodiment, in the current detection circuit:
when the current collector has a current direction requirement, the current input end of the current collector is connected with the common end of the energy storage element, the current output end of the current collector is connected with the external low-voltage end of the energy storage element, and the sampling signal is divided into a sampling positive signal, a sampling negative signal or a ground signal;
when the current collector has no current direction requirement, one end of the current collector is connected with the public end of the energy storage element, the other end of the current collector is connected with the external low-voltage end of the energy storage element, and when current flows into the current collector from the public end of the energy storage element, one end of the current collector with high sampling signal output potential is a sampling positive signal, and one end of the current collector with low sampling signal output potential is a sampling negative signal.
In another preferred embodiment of the present invention, in the forced freewheel circuit:
one end of the execution part of the controllable mechanical switch K4 passes through one end of the execution part of the K5 and is connected with one end of the short circuit of the execution parts of the K1, the K2 and the K3, the other end of the execution part of the K4 is connected with one end of the discharge resistor RD, the other end of the discharge resistor RD is connected with the negative electrode of the diode D1, the other end of the execution part of the K5 is connected with the external high voltage end of the energy storage element, and the negative electrode of the diode D1 is connected with the external low voltage end of the energy storage device.
In another preferred embodiment of the present invention, in the current signal conditioning circuit:
one end of R1 is connected with a sampling negative signal, the other end is connected with one end of R3 and the negative input end of U1, the other end of R3 is connected with the output end of U1, one end of R2 is connected with a sampling positive signal, the other end of R2 is connected with one end of R4 and the positive input end of U1, and the other end of R4 is connected with the ground.
In another preferred embodiment of the present invention, in the overcurrent comparing circuit:
one end of R5 is connected with the output end of U1, the other end of R5 is connected with one end of R6 and the positive input end of U2, the other end of R6 is connected with the output end of U2, the output end of the reference voltage circuit is connected with the negative input end of U2, and the reference voltage circuit comprises a fixed resistor voltage dividing circuit, an adjustable resistor voltage dividing circuit, a parallel DAC circuit, a serial DAC circuit, a communication control DAC circuit and a reference power chip circuit.
In another preferred embodiment of the present invention, the protection control circuit:
one input end of the logic OR gate chip U3 is connected with the output end of the comparator U2, the other input end of the logic OR gate chip U3 is connected with a VLOCK signal of the upper computer, the output end of the logic OR gate chip U3 is connected with one end of the R7, the other end of the R7 is connected with a base electrode of the Q1, a collector electrode of the Q1 is connected with one end of the R8, one end of the C1 is connected with a negative end of the K4 control part, the other end of the K4 control part is connected with a control power supply, an emitter electrode of the Q1 is connected with a reference ground, the other end of the C1 is connected with a reference ground, the other end of the K5 control part is connected with a control power supply, an emitter electrode of the Q2 is connected with a reference ground, and the switch tube comprises a triode, a MOS tube and a photoelectric coupler.
In another preferred embodiment of the present invention, the energy storage parameter selection control circuit:
the number of the signal output ends of the control signal processing circuit is the same as the number of the controllable mechanical switches of the energy storage part, the number of the resistors and the number of the switching tubes;
the signal output end of the control signal processing circuit is respectively connected with one ends of R9, R10 and R11, the other ends of R9, R10 and R11 are respectively connected with the bases of Q3, Q4 and Q5, the emitters of Q3, Q4 and Q5 are respectively connected to the reference ground, the collectors of Q3, Q4 and Q5 are respectively connected with the negative ends of the control parts of K1, K2 and K3, and the other ends of the control parts of K1, K2 and K3 are respectively connected to a control power supply.
In a preferred case of this embodiment, the control signal processing circuit includes a processor IO port through circuit, a decoder circuit, and a communication signal to IO signal circuit.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (5)
1. The utility model provides a double pulse test energy memory with adjustable parameter of initiative protect function, its characterized in that includes energy storage component, energy storage parameter selection circuit, current detection circuit, forced freewheel circuit, current signal conditioning circuit, overcurrent comparison circuit, protection control circuit, energy storage parameter selection control circuit, host computer and control power supply, wherein:
the energy storage element is formed by connecting hollow inductors L1, L2 and L3 in series end to end, wherein the lower end of the L1 is a public end, the connecting ends of the L1 and the L2, the connecting ends of the L2 and the L3 and the upper end of the L3 are all selection ends;
the energy storage parameter selection circuit consists of controllable mechanical switches K1, K2 and K3, wherein any controllable mechanical switch comprises a control part and an execution part, the selection end of each air core inductor is connected with one end of the execution part, and the other ends of all the execution parts are short-circuited;
the current detection circuit comprises a current collector RS and a signal outgoing line, wherein the current collector is used for sampling signals and comprises an active detection device and a passive detection device;
the forced freewheel circuit comprises an execution part of controllable mechanical switches K4 and K5, a discharge resistor RD and a diode D1; in the forced freewheel circuit: one end of the execution part of the controllable mechanical switch K4 passes through one end of the execution part of the K5 and is connected with one end of the execution part of the K1, the K2 and the K3 in short circuit, the other end of the execution part of the K4 is connected with one end of the discharge resistor RD, the other end of the discharge resistor RD is connected with the negative electrode of the diode D1, the other end of the execution part of the K5 is connected with the external high voltage end of the energy storage element, and the negative electrode of the diode D1 is connected with the external low voltage end of the energy storage device;
the current signal conditioning circuit comprises a precision operational amplifier U1 and high-precision resistors R1, R2, R3 and R4; the current signal conditioning circuit comprises: one end of the R1 is connected with a sampling negative signal, the other end is connected with one end of the R3 and the negative input end of the U1, the other end of the R3 is connected with the output end of the U1, one end of the R2 is connected with a sampling positive signal, the other end of the R2 is connected with one end of the R4 and the positive input end of the U1, and the other end of the R4 is connected with the ground reference;
the overcurrent comparison circuit comprises resistors R5 and R6, a comparator U2 and a reference voltage circuit; the overcurrent comparison circuit comprises: one end of R5 is connected with the output end of U1, the other end of R5 is connected with one end of R6 and the positive input end of U2, the other end of R6 is connected with the output end of U2, the output end of the reference voltage circuit is connected with the negative input end of U2, and the types of the reference voltage circuit comprise, but are not limited to, a fixed resistor voltage dividing circuit, an adjustable resistor voltage dividing circuit, a parallel DAC circuit, a serial DAC circuit, a communication control DAC circuit and a reference power chip circuit;
the protection control circuit comprises a logic or gate chip U3, switching tubes Q1 and Q2, resistors R7 and R8, a capacitor C1 and control parts of controllable mechanical switches K4 and K5; the protection control circuit comprises: one input end of the logic OR gate chip U3 is connected with the output end of the comparator U2, the other input end of the logic OR gate chip U3 is connected with a VLOCK signal of the upper computer, the output end of the logic OR gate chip U3 is connected with one end of the R7, the other end of the R7 is connected with a base electrode of the Q1, a collector electrode of the Q1 is connected with one end of the R8, one end of the C1 is connected with a negative end of the K4 control part, the other end of the K4 control part is connected with a control power supply, an emitter electrode of the Q1 is connected with a reference ground, the other end of the C1 is connected with a reference ground, the other end of the K5 control part is connected with a control power supply, an emitter electrode of the Q2 is connected with a reference ground, and the types of the switch tube comprise, a triode, a MOS tube and a photoelectric coupler;
the energy storage parameter selection control circuit comprises a control signal processing circuit, resistors R9, R10 and R11, switching tubes Q3, Q4 and Q5 and a control part of controllable mechanical switches K1, K2 and K3; the energy storage parameter selection control circuit comprises: the number of the signal output ends of the control signal processing circuit is the same as the number of the controllable mechanical switches of the energy storage part, the number of the resistors and the number of the switching tubes; the signal output end of the control signal processing circuit is respectively connected with one ends of R9, R10 and R11, the other ends of R9, R10 and R11 are respectively connected with the bases of Q3, Q4 and Q5, the emitters of Q3, Q4 and Q5 are respectively connected to the reference ground, the collectors of Q3, Q4 and Q5 are respectively connected with the negative ends of the control parts of K1, K2 and K3, and the other ends of the control parts of K1, K2 and K3 are respectively connected to a control power supply.
2. The double pulse test energy storage device with adjustable parameters of active protection function according to claim 1, wherein the number of the controllable mechanical switches in the energy storage parameter selection circuit is the same as the number of the air core inductors, and the types of the controllable mechanical switches include but are not limited to relays, circuit breakers and air cylinders.
3. The double-pulse test energy storage device with the adjustable parameters of the active protection function according to claim 1, wherein in the current detection circuit, the types of the active detection devices comprise, but are not limited to, an active current sensor and a rogowski coil; the types of passive detection devices include, but are not limited to, sampling resistors, shunts, current transformers, passive current sensors.
4. A double pulse test energy storage device with adjustable parameters for active protection according to claim 3, wherein the current detection circuit comprises:
when the current collector has a current direction requirement, the current input end of the current collector is connected with the common end of the energy storage element, the current output end of the current collector is connected with the external low-voltage end of the energy storage element, and the sampling signal is divided into a sampling positive signal, a sampling negative signal or a ground signal;
when the current collector has no current direction requirement, one end of the current collector is connected with the public end of the energy storage element, the other end of the current collector is connected with the external low-voltage end of the energy storage element, and when current flows into the current collector from the public end of the energy storage element, one end of the current collector with high sampling signal output potential is a sampling positive signal, and one end of the current collector with low sampling signal output potential is a sampling negative signal.
5. The energy storage device of claim 1, wherein the control signal processing circuit includes but is not limited to a processor IO port pass-through circuit, a decoder circuit, and a communication signal to IO signal circuit.
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