CN111830929B - Closed-loop real-time simulation system based on synchronous parallel test of multiple stable control devices - Google Patents
Closed-loop real-time simulation system based on synchronous parallel test of multiple stable control devices Download PDFInfo
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- CN111830929B CN111830929B CN202010537291.3A CN202010537291A CN111830929B CN 111830929 B CN111830929 B CN 111830929B CN 202010537291 A CN202010537291 A CN 202010537291A CN 111830929 B CN111830929 B CN 111830929B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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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
Abstract
The invention relates to a closed-loop real-time simulation system based on synchronous and parallel testing of a plurality of stable control devices, and belongs to the technical field of safety and stable control devices. The closed-loop real-time simulation system comprises: RTDS model, GTDO digital signal output board card, GTDI digital signal input board card, GTAO analog signal output board card and power amplifier. The closed-loop real-time simulation system solves the problems that a serial test scheme of a plurality of safety and stability control devices is time-consuming, low in efficiency and not intuitive in comparison effect, can synchronously test devices of different manufacturers, greatly improves test efficiency, reduces wiring workload of the test system, is more intuitive in comparison, and is easy to popularize and apply.
Description
Technical Field
The invention belongs to the technical field of safety and stability control device testing, and particularly relates to a closed-loop real-time simulation system based on synchronous and parallel testing of a plurality of stability control devices.
Background
The safety and stability control system (device) is widely applied to the power grid and plays an important role as an important defense line for guaranteeing the safety and stability of the power system. At present, the safety and stability control system has more manufacturers, and the hardware constitution and the software design thought of devices produced by each manufacturer are different, so that devices of different manufacturers may have different action results under the same fault working condition. In order to ensure the stable operation of the power system, the devices produced by various factories are required to be compared and tested, the correctness, the sensitivity and the reliability of the actions of the devices are checked, and the technical difference is analyzed to make up for the advantages and disadvantages.
If the sensitivity and the reliability of the same type of stable device produced by different manufacturers are to be checked, a set of test platform can be built, and the devices of each manufacturer are tested in turn and then compared. However, when more manufacturers or test items need to be tested, the serial test scheme is too time-consuming, and each time a device is tested, the next set of device to be tested can be accessed after the device is detached from the test system, and the detachment and connection are required frequently, so that the serial test scheme is very complicated. Because the tests of different factories are not carried out at the same time, the comparison of the tested results is not visual enough and the efficiency is low. Therefore, how to overcome the defects of the prior art is a problem to be solved in the current safety and stability control device testing technical field.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a closed-loop real-time simulation system based on synchronous and parallel testing of a plurality of stable control devices.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
closed-loop real-time simulation system based on synchronous parallel test of a plurality of stable control devices comprises: RTDS model, GTDO digital signal output board card, GTDI digital signal input board card, GTAO analog signal output board card and power amplifier;
the RTDS model is respectively connected with the GTDO digital signal output board card, the GTDI digital signal input board card and the GTAO analog signal output board card;
the digital signal output end of the power amplifier is connected with the digital signal input end of the GTDI digital signal input board card and is used for transmitting the cutter signal to the RTDS model through the GTDI digital signal input board card;
the digital signal input end of the power amplifier is connected with the digital signal output end of the GTDO digital signal output board card and is used for transmitting digital signals of the position of the HWJ switch in the RTDS model;
each power amplifier is connected in series with at least one safety and stability control device to be tested and is used for transmitting digital signals of the position of the 2 paths HWJ switch;
each power amplifier is correspondingly connected with the GTAO analog signal output board card, receives the current and voltage analog quantity from the GTAO analog signal output board card, and then sends the current and voltage analog quantity to the safety and stability control device to be tested for sampling and processing, so that safety and stability control is realized; and the safety and stability control devices to be tested are also connected with the output end of the power amplifier and are used for transmitting the generated cutter signals to the GTDI digital signal input board card through the power amplifier.
Further, preferably, the a-phase voltage amplified by the power amplifier after being output by the GTAO analog signal output board card is sent to one end of a first measuring inductance of the safety and stability control device, and the other end of the first measuring inductance is connected with a voltage common end; the GTAO analog signal outputs the A phase current amplified by the power amplifier after being output by the board card, and sends the A phase current into one end of a second measuring inductance of the safety and stability control device, and the other end of the second measuring inductance is connected with a current public end;
the GTAO analog signal outputs the B phase voltage amplified by the power amplifier after being output by the board card, and sends the B phase voltage into one end of a third measuring inductance of the safety and stability control device, and the other end of the third measuring inductance is connected with a voltage common end; the GTAO analog signal outputs the B phase current amplified by the power amplifier after being output by the board card, and sends the B phase current into one end of a fourth measuring inductance of the safety and stability control device, and the other end of the fourth measuring inductance is connected with a current public end;
the C-phase voltage amplified by the power amplifier after being output by the GTAO analog signal output board card is sent to one end of a fifth measuring inductance of the safety and stability control device, and the other end of the fifth measuring inductance is connected with a voltage common end; the C-phase current amplified by the power amplifier after being output by the GTAO analog signal output board card is sent to one end of a sixth measuring inductance of the safety and stability control device, and the other end of the sixth measuring inductance is connected with a current public end;
the voltage measuring loop between the power amplifier and the safety and stability control device is connected in parallel, and the current measuring loop is connected in series.
Further, preferably, the HWJ switch is on when the signal output by the GTDO digital signal output board card is 1, and the HWJ switch is off when the output signal is 0; one end of the HWJ switch is connected with a 24V power supply, and the other end of the HWJ switch is connected with a HWJ input terminal of the safety and stability control device;
when the safety and stability control device needs to cut, the cut signal switch of the safety and stability control device is in the closed position, the cut signal switch of the GTDI digital signal input board card is in the closed position, and the related loop is conducted to cut successfully; when the safety and stability control device does not need to cut, the stable cut signal switch is divided into the positions, the cut signal switch of the GTDI digital signal input board card is divided into the positions, and the related loop is not conducted and is not cut.
Further, it is preferable that each power amplifier is connected in series with 4 safety and stability control devices to be tested.
Further, it is preferable that the GTAO analog signal output board card current voltage analog is 1A/57.74V.
Further, it is preferable that the GTAO analog signal output board card and the power amplifier are each provided with a plurality.
The cutter group signal of the GTDI digital signal input board card needs to be input into the RTDS model, and the signal output by the GTDO digital signal output board card also comes from the RTDS model.
The position of the HWJ switch is that the RTDS model is output to the safety and stability control device through the GTDO digital signal output board card. The present invention is not particularly limited to transmitting several paths, and preferably two paths.
Real-time digital simulation system, english name real time digital simulation system, RTDS for short. RTDS is a product of development of digital simulation technology, computer technology and parallel processing technology, and has the characteristics of digital simulation, and more importantly, the adoption of the parallel processing technology and the design of special hardware ensure the real-time performance of RTDS operation and the capability of closed loop test, and the real-time simulation operation of a large-scale power system can be completed on the step length of 50 us. Thus, the RTDS simulation test system primary equipment is used in the invention.
Compared with the prior art, the invention has the beneficial effects that:
the invention designs the RTDS real-time simulation closed-loop simulation system for synchronously and parallelly testing a plurality of safety and stability control devices, which can synchronously test devices of different manufacturers, greatly improves test efficiency, reduces wiring workload of the test system and is more visual in comparison.
Taking the simultaneous testing of devices of 4 manufacturers as an example, the efficiency is 4 times that of the serial testing method, the time and the cost are one fourth of that of the serial testing method, and the more the manufacturers needing to be tested, the more the superiority of the scheme can be embodied.
Drawings
FIG. 1 is a schematic diagram of a simulation system model; wherein, the liquid crystal display device comprises a liquid crystal display device,is a generator set; />A step-up transformer for converting 24kV voltage at the side of a generator set into 525kV voltage at the side of a 500kV alternating current bus 1, wherein the left side is a low-voltage side (24 kV), and the right side is a high-voltage side (500 kV); />The (CT-G1 to CT-Gn) are current transformers, mainly have current measurement function, and convert large current born by primary equipment into small current suitable for controlling the operation of a protection and measurement system; b11 to Bn1, BG1 to BGn, B12 to Bn2, SR12, SR2, SR23, SRm are all switches; />(PT-L1 to PT-Ln) are voltage transformers, mainly used for voltage measurement, and converting large voltage born by primary equipment into small voltage suitable for controlling the operation of a protection and measurement system;representing one end of an alternating current transmission line; k1 to Kn are fault numbers;
FIG. 2 is an overall wiring diagram of a simulation system;
FIG. 3 is an analog access schematic;
FIG. 4 is a schematic diagram of switching value access; wherein the method comprises the steps ofIs a diode.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the present invention and should not be construed as limiting the scope of the invention. The specific techniques or conditions are not identified in the examples and are performed according to techniques or conditions described in the literature in this field or according to the product specifications. The materials or equipment used are conventional products available from commercial sources, not identified to the manufacturer.
Example 1
As shown in fig. 2, a closed-loop real-time simulation system based on synchronous parallel testing of a plurality of stable control devices includes: RTDS model, GTDO digital signal output board card, GTDI digital signal input board card, GTAO analog signal output board card and power amplifier;
the RTDS model is respectively connected with the GTDO digital signal output board card, the GTDI digital signal input board card and the GTAO analog signal output board card;
the digital signal output end of the power amplifier is connected with the digital signal input end of the GTDI digital signal input board card and is used for transmitting the cutter signal to the RTDS model through the GTDI digital signal input board card;
the digital signal input end of the power amplifier is connected with the digital signal output end of the GTDO digital signal output board card and is used for transmitting digital signals of the position of the HWJ switch in the RTDS model;
each power amplifier is connected in series with at least one safety and stability control device to be tested and is used for transmitting digital signals of the position of the HWJ switch;
each power amplifier is correspondingly connected with the GTAO analog signal output board card, receives the current and voltage analog quantity from the GTAO analog signal output board card, and then sends the current and voltage analog quantity to the safety and stability control device to be tested for sampling and processing, so that safety and stability control is realized; and the safety and stability control devices to be tested are also connected with the output end of the power amplifier and are used for transmitting the generated cutter signals to the GTDI digital signal input board card through the power amplifier.
Example 2
As shown in fig. 2 to 4, a closed-loop real-time simulation system based on synchronous parallel testing of a plurality of stable control devices includes: RTDS model, GTDO digital signal output board card, GTDI digital signal input board card, GTAO analog signal output board card and power amplifier;
the RTDS model is respectively connected with the GTDO digital signal output board card, the GTDI digital signal input board card and the GTAO analog signal output board card;
the digital signal output end of the power amplifier is connected with the digital signal input end of the GTDI digital signal input board card and is used for transmitting the cutter signal to the RTDS model through the GTDI digital signal input board card;
the digital signal input end of the power amplifier is connected with the digital signal output end of the GTDO digital signal output board card and is used for transmitting digital signals of the position where the 2 paths HWJ switch is located in the RTDS model;
each power amplifier is connected in series with at least one safety and stability control device to be tested and is used for transmitting digital signals of the position of the 2 paths HWJ switch;
each power amplifier is correspondingly connected with two GTAO analog signal output boards, receives the current and voltage analog quantity from the GTAO analog signal output boards, and then sends the current and voltage analog quantity to the safety and stability control device to be tested for sampling and processing, so that safety and stability control is realized; and the safety and stability control devices to be tested are also connected with the output end of the power amplifier and are used for transmitting the generated cutter signals to the GTDI digital signal input board card through the power amplifier.
The GTAO analog signal outputs the A-phase voltage amplified by the power amplifier after being output by the board card, and sends the A-phase voltage into one end of a first measuring inductance of the safety and stability control device, and the other end of the first measuring inductance is connected with a voltage common end; the GTAO analog signal outputs the A phase current amplified by the power amplifier after being output by the board card, and sends the A phase current into one end of a second measuring inductance of the safety and stability control device, and the other end of the second measuring inductance is connected with a current public end;
the GTAO analog signal outputs the B phase voltage amplified by the power amplifier after being output by the board card, and sends the B phase voltage into one end of a third measuring inductance of the safety and stability control device, and the other end of the third measuring inductance is connected with a voltage common end; the GTAO analog signal outputs the B phase current amplified by the power amplifier after being output by the board card, and sends the B phase current into one end of a fourth measuring inductance of the safety and stability control device, and the other end of the fourth measuring inductance is connected with a current public end;
the C-phase voltage amplified by the power amplifier after being output by the GTAO analog signal output board card is sent to one end of a fifth measuring inductance of the safety and stability control device, and the other end of the fifth measuring inductance is connected with a voltage common end; the C-phase current amplified by the power amplifier after being output by the GTAO analog signal output board card is sent to one end of a sixth measuring inductance of the safety and stability control device, and the other end of the sixth measuring inductance is connected with a current public end;
the voltage measuring loop between the power amplifier and the safety and stability control device is connected in parallel, and the current measuring loop is connected in series.
The HWJ switch is in the closed position when the signal output by the GTDO digital signal output board card is 1, and the HWJ switch is in the split position when the output signal is 0; one end of the HWJ switch is connected with a 24V power supply, and the other end of the HWJ switch is connected with a HWJ input terminal of the safety and stability control device;
when the safety and stability control device needs to cut, the cut signal switch of the safety and stability control device is in the closed position, the cut signal switch of the GTDI digital signal input board card is in the closed position, and the related loop is conducted to cut successfully; when the safety and stability control device does not need to cut, the stable cut signal switch is divided into the positions, the cut signal switch of the GTDI digital signal input board card is divided into the positions, and the related loop is not conducted and is not cut.
Each power amplifier is connected with 4 safety and stability control devices to be tested in series.
The analog quantity of the GTAO analog signal output board card current and voltage is 1A/57.74V.
The GTAO analog signal output board card and the power amplifier are both provided with a plurality of.
Application instance
The content of the scheme is illustrated by taking the example that devices of 4 manufacturers are tested simultaneously, 6 units and 6 outgoing lines are arranged on a power grid.
A schematic diagram of the simulation system is shown in FIG. 1, and the simulation system RTDS model comprises 1# to n # generators, 1# to n # step-up transformers, 1# to n # circuits and n/2 infinite power supplies. The low-voltage side (24 kV) of the step-up transformer is connected with the generator set, the high-voltage side (500 kV) of the step-up transformer is connected with the 500kV alternating current bus 1, one end of the power transmission line is connected with the 500kV alternating current bus 2, the current transformer is connected on the line in series, and the voltage transformer is connected on the line in parallel.
The simulation system RTDS model 1# to 6# generators, 1# to 6# step-up transformers, and 1# to 6# lines, and three infinite power supplies are included in the simulation system.
The overall wiring diagram of the simulation system is shown in fig. 2. Fig. 2 only shows a schematic diagram of the connection relationship of the power amplifier 1, and the connection relationship of the rest power amplifiers is the same due to limited space, but is not drawn one by one.
(1) Analog access
The scheme is connected into 6 circuits and 6 units in total, uses 12 power amplifiers and GTAO analog signal output board card to connect the circuits and the three-phase currentThe voltage and current of the unit are sent to a power amplifier and then to a safety and stability control device, and the power amplifier has the function of converting signals output by the board card into the available voltage and current quantity of the safety and stability control device to be tested provided by various manufacturers, wherein the voltage is 57.74V, and the current is 1A. The voltage of the 6-circuit and the 6 units are connected in parallel, the current of the 6-circuit and the 6 units are connected in series, and the voltage loop needs to be switched on by alternating current before entering the device. Taking UA and IA as examples, the detailed connection of analog access is shown in figure 3; describing the connection method between the power amplifier and the safety and stability control device by taking A-phase voltage and current as the description, U A Representing the A-phase voltage amplified by the power amplifier after being output by the GTAO, and sending the A-phase voltage to one end of a first measuring inductance of the safety and stability control device, U N The representative voltage common terminal is connected with the other end of the first measuring inductor; i A Representing the A-phase current after being amplified by the power amplifier after being output by the GTAO, and sending the A-phase current into one end of a second measuring inductance of the safety and stability control device, I N Representing a current common terminal, connected to the other end of the second measuring inductance. The voltage measuring loop between the power amplifier and the safety and stability control device is connected in parallel, and the current measuring loop is connected in series.
(2) Switching value access
The switching value output is mainly that a switching value judging start-stop control word HWJ of a circuit is output through a GTDO digital signal output board card of an RTDS and then is input into a safety and stability control device, and each manufacturer adopts a parallel connection and optocoupler isolation method; each manufacturer safety and stability control device outputs 1 pair of trip contacts of 6 units, and feeds the trip contacts back to a GTDI (digital quantity input board) board card of the RTDS respectively, and only one safety and stability control device is used for controlling the cutting machine, and the other safety and stability control devices are only used for observation. The detailed wiring of the switching access is shown in fig. 4.
Fig. 4 illustrates the connection between HWJ of the GTDO output and the safety and stability control device, and the connection between the cutter signal switch TQJ of the safety and stability control device output and the GTDI board card.
The HWJ switch is on when the signal output by the GTDO is 1, and the HWJ switch is off when the signal output by the GTDO is 0. One end of the HWJ switch is connected with a 24V power supply, and the other end is connected with a HWJ input terminal (DI_ HWJ) of the safety and stability control device; DI_GND is the common zero potential. When the HWJ switch signal is 1, di_ HWJ =24v, di_gnd=0v, the diode is turned on, the whole loop is turned on, and the safety and stability control device can receive the signal HWJ is 1. When HWJ is 0, di_ HWJ =0v, di_gnd=0v, and the diode is turned off, the safety and stability control device receives HWJ signal 0.
When the safety and stability control device needs to cut, the stable control cut signal switch TQJ is in the closed position, the cut signal switch QJ (QJ 11-14) of the GTDI is in the closed position, and the related loop is conducted, so that the cut can be successfully performed. When the safety and stability control device does not need cutting, the stable control cutting signal switch TQJ is in a split position, the cutting signal switch QJ (QJ 11-14) of the GTDI is in a split position, and the related loop is not conducted and does not cut.
Taking the simultaneous testing of devices of 4 manufacturers as an example, the efficiency is 4 times that of a serial testing method, the time and the cost are one fourth of those of the serial testing method, and the more the manufacturers needing to be tested, the more the superiority of the technical scheme of the invention can be embodied.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. Closed-loop real-time simulation system based on synchronous parallel test of a plurality of stable control devices, which is characterized by comprising: RTDS model, GTDO digital signal output board card, GTDI digital signal input board card, GTAO analog signal output board card and power amplifier;
the RTDS model is respectively connected with the GTDO digital signal output board card, the GTDI digital signal input board card and the GTAO analog signal output board card;
the digital signal output end of the power amplifier is connected with the digital signal input end of the GTDI digital signal input board card and is used for transmitting the cutter signal to the RTDS model through the GTDI digital signal input board card;
the digital signal input end of the power amplifier is connected with the digital signal output end of the GTDO digital signal output board card and is used for transmitting digital signals of the position of the HWJ switch in the RTDS model;
each power amplifier is connected in series with at least one safety and stability control device to be tested and is used for transmitting digital signals of the position of the HWJ switch;
each power amplifier is correspondingly connected with the GTAO analog signal output board card, receives the current and voltage analog quantity from the GTAO analog signal output board card, and then sends the current and voltage analog quantity to the safety and stability control device to be tested for sampling and processing, so that safety and stability control is realized; the safety and stability control devices to be tested are also connected with the output end of the power amplifier and are used for transmitting the cutter signals generated by the safety and stability control devices to the GTDI digital signal input board card through the power amplifier;
the analog quantity is connected into three-phase voltage and three-phase current of the N circuit and N units, 2N power amplifiers are used, the GTAO analog signal output board card sends out voltage and current of the circuit and the units to the power amplifiers, and then the voltage and current are sent to the safety and stability control device, and the power amplifiers are used for converting signals output by the GTAO analog signal output board card into voltage and current amounts which are provided by various manufacturers and are available for the safety and stability control device to be tested; the voltages of the N return lines and the N units are connected in parallel, the currents of the N return lines and the N units are connected in series, and the voltage loop is required to be switched on by alternating current before entering the device; the voltage measuring loop between the power amplifier and the safety and stability control device is connected in parallel, and the current measuring loop is connected in series;
the switching value output is that the switching value judging start-stop control word HWJ of the circuit is output through a GTDO digital signal output board card of the RTDS and then is input into a safety and stability control device, and the safety and stability control devices of all manufacturers are arranged by adopting a parallel connection and optocoupler isolation method; each manufacturer safety and stability control device outputs 1 pair of tripping contact points of N sets, and feeds the tripping contact points back to the GTDI digital signal input board card respectively, and only the outlet of one safety and stability control device is used for controlling the cutting machine.
2. The closed-loop real-time simulation system based on synchronous parallel testing of a plurality of stable control devices according to claim 1, wherein the A-phase voltage amplified by a power amplifier after being output by a GTAO analog signal output board card is sent to one end of a first measuring inductance of a safety and stable control device, and the other end of the first measuring inductance is connected with a voltage common end; the GTAO analog signal outputs the A phase current amplified by the power amplifier after being output by the board card, and sends the A phase current into one end of a second measuring inductance of the safety and stability control device, and the other end of the second measuring inductance is connected with a current public end;
the GTAO analog signal outputs the B phase voltage amplified by the power amplifier after being output by the board card, and sends the B phase voltage into one end of a third measuring inductance of the safety and stability control device, and the other end of the third measuring inductance is connected with a voltage common end; the GTAO analog signal outputs the B phase current amplified by the power amplifier after being output by the board card, and sends the B phase current into one end of a fourth measuring inductance of the safety and stability control device, and the other end of the fourth measuring inductance is connected with a current public end;
the C-phase voltage amplified by the power amplifier after being output by the GTAO analog signal output board card is sent to one end of a fifth measuring inductance of the safety and stability control device, and the other end of the fifth measuring inductance is connected with a voltage common end; the C-phase current amplified by the power amplifier after being output by the GTAO analog signal output board card is sent to one end of a sixth measuring inductance of the safety and stability control device, and the other end of the sixth measuring inductance is connected with a current public end;
the voltage measuring loop between the power amplifier and the safety and stability control device is connected in parallel, and the current measuring loop is connected in series.
3. The closed-loop real-time simulation system based on synchronous parallel testing of a plurality of stable control devices according to claim 1, wherein: the HWJ switch is in the closed position when the signal output by the GTDO digital signal output board card is 1, and the HWJ switch is in the split position when the output signal is 0; one end of the HWJ switch is connected with a 24V power supply, and the other end of the HWJ switch is connected with a HWJ input terminal of the safety and stability control device;
when the safety and stability control device needs to cut, the cut signal switch of the safety and stability control device is in the closed position, the cut signal switch of the GTDI digital signal input board card is in the closed position, and the related loop is conducted to cut successfully; when the safety and stability control device does not need to cut, the stable cut signal switch is divided into the positions, the cut signal switch of the GTDI digital signal input board card is divided into the positions, and the related loop is not conducted and is not cut.
4. The closed-loop real-time simulation system based on synchronous parallel testing of a plurality of stable control devices according to claim 1, wherein: each power amplifier is connected with 4 safety and stability control devices to be tested in series.
5. The closed-loop real-time simulation system based on synchronous parallel testing of a plurality of stable control devices according to claim 1, wherein: the analog quantity of the GTAO analog signal output board card current and voltage is 1A/57.74V.
6. The closed-loop real-time simulation system based on synchronous parallel testing of a plurality of stable control devices according to claim 1, wherein: the GTAO analog signal output board card and the power amplifier are both provided with a plurality of.
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