CN106950851B - Thyristor simulation device and thyristor semi-physical simulation platform - Google Patents
Thyristor simulation device and thyristor semi-physical simulation platform Download PDFInfo
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- G05B17/00—Systems involving the use of models or simulators of said systems
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Abstract
The invention relates to a thyristor simulation device and a thyristor semi-physical simulation platform, wherein the simulation platform comprises an operation simulation software, a computer storing a thyristor equipment simulation model and a thyristor simulation device in communication connection with the computer; the thyristor simulation device is used for receiving a control signal from a thyristor control protection device and transmitting the control signal to the computer; simulation software in the computer generates simulation process data according to the control signal and the thyristor equipment simulation model; the thyristor simulation device receives simulation process data generated by the simulation software and forwards the simulation process data to the thyristor control protection device. The simulation platform provided by the invention can meet the simulation requirement of the state change of the thyristor simulator, and is low in cost and high in cost performance.
Description
Technical Field
The invention relates to a thyristor simulation device and a thyristor semi-physical simulation platform, and belongs to the technical field of direct-current circuit breakers.
Background
The thyristor switch is an important component element in flexible AC/DC power transmission, and is widely applied to phase control and parallel connection of thyristors
The power system comprises a reactor (TCR), a thyristor switched shunt capacitor (TSC), a direct current circuit breaker and other power system products. Because the structure and the control protection logic of the thyristor switch are complex, before the thyristor switch is put into operation in a network, strict software and hardware simulation needs to be carried out so as to verify the performances of the thyristor switch, such as correctness, reliability, stability and the like.
At present, a commonly used simulation platform in the market is an RTDS/RT-LAB digital simulator, which is a real-time all-digital electromagnetic transient power system simulation device, can perform real-time accurate simulation on an ac/dc system by using advanced software and hardware technologies, but is expensive and costs hundreds of thousands of dollars.
Therefore, it is necessary to develop a simulation platform that can realize real-time and accurate simulation of the thyristor switch and is low in cost.
Disclosure of Invention
The invention aims to provide a thyristor simulation device and a thyristor semi-physical simulation platform, which are used for solving the problem of high simulation cost of a thyristor.
In order to solve the above technical problem, the present invention provides a thyristor simulation device, which comprises the following schemes:
the first device scheme is as follows: the simulation device is used for receiving a control signal from a thyristor control protection device and transmitting the control signal to a computer which runs simulation software and stores a thyristor equipment simulation model; the thyristor simulation device receives simulation process data generated by the simulation software and forwards the simulation process data to the thyristor control protection device; the control signal comprises an opening/closing instruction and a trigger pulse signal; the thyristor simulation device comprises a back plate, wherein a communication plate is connected to the back plate, and a serial port communication unit used for being connected with a computer is arranged on the communication plate; the back plate is connected with a pulse recognition plate, and the pulse recognition plate is used for calculating a trigger angle according to a trigger pulse signal of the thyristor control protection device and a phase synchronization signal issued by simulation software and forwarding the trigger angle to the communication plate.
The device scheme II comprises the following steps: on the basis of the first device scheme, the simulation process data comprise a line voltage amount, a line current amount, a phase difference and a switch position.
The device scheme is as follows: on the basis of the first device scheme, a fast IO board is connected to the back board and used for receiving an opening/closing instruction of the thyristor control protection device and forwarding the opening/closing instruction to the communication board.
The device scheme is four: on the basis of the first device scheme, a voltage output board and a current output board are connected to the back board, and the voltage output board is used for receiving the digital voltage quantity of the communication board, converting the digital voltage quantity into analog quantity and outputting the analog quantity to the thyristor control protection device; the current output board is used for receiving the digital current magnitude of the communication board, converting the digital current magnitude into analog magnitude and outputting the analog magnitude to the thyristor control protection device.
The device scheme is as follows: on the basis of the fourth device scheme, the backboard is connected with a wave recording playback board, and the wave recording playback board is used for recording and playing back the analog voltage quantity, the analog current quantity and the switching-off/switching-on instructions processed by the thyristor simulation device.
The invention also provides a thyristor semi-physical simulation platform, which comprises the following scheme:
the first platform scheme is as follows: the simulation platform comprises a running simulation software, a computer storing a thyristor equipment simulation model and a thyristor simulation device in communication connection with the computer; the thyristor simulation device is used for receiving a control signal from a thyristor control protection device and transmitting the control signal to the computer; simulation software in the computer generates simulation process data according to the control signal and the thyristor equipment simulation model; the thyristor simulation device receives simulation process data generated by the simulation software and forwards the simulation process data to the thyristor control protection device; the control signal comprises an opening/closing instruction and a trigger pulse signal; the thyristor simulation device comprises a back plate, wherein a communication plate is connected to the back plate, and a serial port communication unit used for being connected with a computer is arranged on the communication plate; the back plate is connected with a pulse recognition plate, and the pulse recognition plate is used for calculating a trigger angle according to a trigger pulse signal of the thyristor control protection device and a phase synchronization signal issued by simulation software and forwarding the trigger angle to the communication plate.
And a second platform scheme: on the basis of the first platform scheme, the simulation software is PSCAD or MATLAB.
Platform scheme three, four: on the basis of the first platform scheme and the second platform scheme, the simulation process data comprise line voltage quantity, line current quantity, phase difference and switch position.
Platform scheme five, six: on the basis of the first platform scheme and the second platform scheme, the back plate is connected with a rapid IO board, and the rapid IO board is used for receiving an opening/closing instruction of the thyristor control protection device and forwarding the opening/closing instruction to the communication board.
Platform scheme seven, eight: on the basis of the first platform scheme and the second platform scheme, a voltage output board and a current output board are connected to the back board, and the voltage output board is used for receiving the digital voltage quantity of the communication board, converting the digital voltage quantity into analog quantity and outputting the analog quantity to the thyristor control protection device; the current output board is used for receiving the digital current magnitude of the communication board, converting the digital current magnitude into analog magnitude and outputting the analog magnitude to the thyristor control protection device.
Nine and ten platform schemes: on the basis of the first platform scheme and the second platform scheme, the backboard is connected with a wave recording playback board, and the wave recording playback board is used for recording and playing back the analog voltage quantity, the analog current quantity and the switch-off/switch-on command which are processed by the thyristor simulation device.
The invention has the beneficial effects that: the thyristor semi-physical simulation platform consists of two parts, wherein one part is a computer which runs simulation software and stores a thyristor equipment simulation model, the other part is a thyristor simulation device, the computer establishes the simulation model by adopting the simulation software, calculates a command given by the thyristor control protection device through the simulation model, generates simulation process data and feeds the simulation process data back to the thyristor control protection device; the thyristor simulation device has the functions of communication and data conversion between the computer and the thyristor control protection device, for example, the control signal sent by the thyristor control protection device is sent to the simulation software; the simulation process data generated by the simulation software is forwarded to the thyristor control protection device; through the simulation platform, the semi-physical simulation of the thyristor is realized, the requirements of test users of a large number of thyristor control devices can be met, expensive simulation equipment is not needed, the simulation can be realized only by one computer and one thyristor simulation device, the simulation cost is reduced, and the cost performance is high.
Drawings
FIG. 1 is a simulation platform set-up block diagram;
fig. 2 is a configuration diagram of a thyristor simulation apparatus;
fig. 3 is a signal transmission of the thyristor simulation apparatus.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
In this embodiment, the thyristor simulation platform is composed of a PSCAD software and a serial communication module installed in a computer (such as a PC or an industrial personal computer), a thyristor simulation device, a thyristor control protection device, and a computer monitoring background, and a simulation platform building block diagram is shown in fig. 1. The PSCAD software is communicated with the thyristor simulation device through the serial port communication module, the thyristor control protection device sends control signals to the thyristor simulation device and receives simulation process data information from the thyristor simulation device, and the computer monitoring background is communicated with the thyristor control protection device through an RJ45 serial port. The PSCAD and the thyristor simulation device form a thyristor semi-physical simulation platform together.
The following describes each device or module in the simulation platform in further detail.
1. PSCAD and serial port communication module
The PSCAD is used as a relatively common power system simulation software, is an advanced power system steady-state and transient simulation tool, is suitable for theoretical simulation, and belongs to the prior art. In this embodiment, the PSCAD is mainly used to build a simulation model, but Matlab or other software capable of implementing the modeling function required in this embodiment may be used instead.
The serial port communication module adopts VC and other tools to compile serial port communication software functions on a Windows platform, and is mainly used for realizing serial communication between the PSCAD and the thyristor simulation device. Of course, other communication interfaces may be used to exchange information between the PSCAD and the thyristor simulation apparatus.
2. Thyristor simulation device
The thyristor simulation device is a hardware part of a thyristor semi-physical simulation platform, and as shown in fig. 2, the simulation device comprises functional components such as a communication board, a pulse recognition board, a fast IO board, a voltage output board, a current output board, a wave recording playback board and a power board, wherein:
the communication board is responsible for management and communication of the thyristor simulation device, carries out interactive communication with a computer running simulation software PSCAD through the serial port communication module, is responsible for sending a control signal from the thyristor control protection device to the PSCAD, is also responsible for analyzing simulation process data downloaded by the PSCAD, storing the simulation process data into the SD card, and classifies and transmits analyzed serial port communication contents to other components of the thyristor simulation device through the backboard.
Taking a thyristor phase-controlled shunt reactor TCR of an SVC as an example, the PSCAD simulation communication uses an RS232 serial port to explain a control signal (uplink data) from a thyristor simulation device to PSCAD software and simulation process data (downlink data) from the PSCAD software to the thyristor simulation device:
(1) uplink data
The thyristor simulation device is connected with PSCAD software, and the PSCAD software comprises an opening/closing switching-on/off command and a thyristor triggering angle. Wherein, changing the trigger angle of the thyristor in the TCR can change the reactive power output by the TCR, thereby adjusting the reactive power of the line. The content of the upstream data can be generally considered as: the thyristor simulation device collects a plurality of switching values and analog values from the control protection device, converts the switching values and the analog values into data and sends the data to PSCAD software.
(2) Downstream data
The thyristor simulation device is converted from PSCAD software to include the line voltage magnitude, the line current magnitude, the phase difference and the switch position. The phase difference refers to an angular difference between the voltage sine wave and the current sine wave. The content of the downstream data can be generally considered as: a plurality of switching values and an analog value.
The pulse recognition board is communicated with the thyristor control protection device through the optical fiber, calculates a trigger angle according to the trigger pulse of the thyristor control protection device and the phase synchronization signal issued by the PSCAD simulation software, and sends the trigger angle to the communication board through the backboard. In addition, the number of the thyristor pulse recognition boards can be correspondingly configured according to the number of the trigger boards of the thyristor control protection device.
The fast IO board is used for receiving a switching-on/off command of the thyristor control protection device, namely an opening/closing signal, and sending the opening/closing signal to the communication board through the backboard.
The voltage output board is responsible for receiving the digital voltage quantity of the communication board, converting the digital quantity into analog quantity and outputting the analog quantity to the voltage measurement board card of the thyristor control protection device.
The current output board is responsible for receiving the digital current magnitude of the communication board, converting the digital magnitude into analog magnitude and outputting the analog magnitude to the current measurement board card of the thyristor control protection device.
The wave recording playback board is used for recording and playing back analog quantities such as voltage analog quantities obtained by processing of the voltage output board, current analog quantities obtained by processing of the current output board and switching quantity signals such as switching-on/switching-off received by the rapid IO board, and provides a basis for debugging and fault analysis.
The functional components such as the communication board, the pulse recognition board, the rapid IO board, the voltage output board, the current output board and the wave recording playback board are connected with the back board, and signal transmission between every two boards is achieved through the back board.
The power supply board is used for charging the fast thyristor simulation device, and can be an interface directly connected with a power supply or power supply equipment comprising a power supply.
Fig. 3 shows the transmission condition of simulation process data in the thyristor simulation apparatus, that is, the communication board receives simulation process data such as line voltage, line current, phase difference, and switch position from a computer running simulation software, and the communication board exchanges information with the voltage output board, the current output board, and the recording playback board through the backplane.
In addition, the pulse identification board and the rapid IO board realize information exchange with the communication board through the backboard. The communication delay in the thyristor simulation device can be time compensated, for example, the trigger angle is changed in the next cycle.
The above is a specific structure of the thyristor simulation device, and is formed by a plurality of boards, and the design of the boards belongs to a common framework of power system control equipment, so that only the functions realized by each board are introduced, and the details of hardware are not repeated. As another embodiment, other configurations may be adopted, such as one board card completing the functions of the above-mentioned board cards.
3. Thyristor control protection device and monitoring background
The thyristor control protection device and the monitoring background belong to a tested system, do not belong to a thyristor semi-physical simulation platform, and are mainly used for issuing control signals to thyristor-emitting equipment, receiving information sent by the thyristor simulation device and monitoring the running state of the thyristor simulation device. The control signal issued by the thyristor control protection device is determined by the thyristor equipment, and the control signal is corresponding to different thyristor simulation models. Typically, the control signal includes an opening/closing signal and a trigger pulse, or a separate opening/closing signal. Of course, it is known to those skilled in the art that the PSCAD is used to design the control signals corresponding to different thyristor devices, and the details are not described herein.
The following describes the control flow of the thyristor semi-physical simulation platform by taking the TCR as an example:
a preparation stage:
PSCAD establishes a simulation model of TCR, programs a program module of thyristor control protection strategy and logic time sequence, all links of a simulation environment are in a running state, and a thyristor simulation device receives data of line voltage quantity, line current quantity, phase difference, TCR switch position and the like downloaded by PSCAD and stores the data into an SD card and generates a synchronous signal of trigger pulse and the like.
A simulation stage:
(1) the monitoring background issues a TCR input command and a thyristor trigger pulse signal to the thyristor control protection device;
(2) the thyristor control protection device outputs a closing signal and a thyristor trigger pulse signal;
(3) the pulse recognition board of the thyristor simulation device receives a thyristor trigger pulse signal sent by the thyristor control protection device, calculates a trigger angle according to the trigger pulse and a phase synchronization signal sent by simulation software, and forwards the trigger angle to the communication board of the thyristor simulation device; the fast IO board of the thyristor simulation device receives a closing signal sent by the thyristor control protection device and forwards the closing signal to the communication board, and the communication board sends the trigger angle and the closing signal to the simulation software PSCAD;
(4) the communication board of the thyristor simulation device analyzes the simulation process data downloaded from the PSCAD, simultaneously respectively sends the current flowing through the thyristor to the current output board through the back board, and sends the voltage at two ends of the thyristor to the voltage output board;
(5) the voltage output board converts the received digital quantity voltage into analog quantity voltage and sends the analog quantity voltage to a voltage measurement board card of the thyristor control protection device; the current output board converts the received digital quantity current into analog quantity current and sends the analog quantity current to a current measurement board card of the thyristor control protection device; the wave recording playback board records and plays back the analog quantity voltage, the analog quantity current and the closing signal;
(6) the thyristor control protection device realizes communication with a computer monitoring background through an RJ45 serial port according to the thyristor action flow and change sent by the thyristor simulation device, reports event information and finally realizes the testing function of the thyristor.
In addition, the thyristor simulation device changes the output capacity of the TCR and adjusts the voltage or the reactive power of the power grid according to the triggering angle parameter through thyristor pulse identification.
The thyristor semi-physical simulation platform in the embodiment has the advantages that the cost is less than one tenth of that of an RTDS/RT-LAB digital simulator, the cost performance is extremely high, and the requirements of a large-batch thyristor control device test user can be met.
In the above embodiments, the TCR is simulated, so PSCAD builds a simulation model of the TCR. As another embodiment, for example, if the TSC needs to be simulated, the PSCAD is required to establish a simulation model of the TSC, and of course, if other thyristor devices need to be simulated, the PSCAD is required to establish a corresponding simulation model of the thyristor device.
Claims (7)
1. A thyristor simulation device is characterized in that the simulation device is used for receiving a control signal from a thyristor control protection device and transmitting the control signal to a computer which runs simulation software and stores a thyristor equipment simulation model; the thyristor simulation device receives simulation process data generated by the simulation software and forwards the simulation process data to the thyristor control protection device;
the control signal comprises an opening/closing instruction and a trigger pulse signal;
the thyristor simulation device comprises a back plate, wherein a communication plate is connected to the back plate, and a serial port communication unit used for being connected with a computer is arranged on the communication plate;
the back plate is connected with a pulse recognition plate, and the pulse recognition plate is used for calculating a trigger angle according to a trigger pulse signal of the thyristor control protection device and a phase synchronization signal issued by simulation software and forwarding the trigger angle to the communication plate.
2. The thyristor simulation apparatus of claim 1, wherein the simulated process data comprises a line voltage amount, a line current amount, a phase difference, and a switch position.
3. The thyristor simulation device according to claim 1, wherein the back board is connected with a fast IO board, and the fast IO board is configured to receive an opening/closing instruction of the thyristor control protection device and forward the opening/closing instruction to the communication board.
4. The thyristor simulation device according to claim 1, wherein a voltage output board and a current output board are connected to the backplane, and the voltage output board is configured to receive the digital voltage quantity of the communication board, convert the digital voltage quantity into an analog quantity, and output the analog quantity to the thyristor control protection device; the current output board is used for receiving the digital current magnitude of the communication board, converting the digital current magnitude into analog magnitude and outputting the analog magnitude to the thyristor control protection device.
5. The thyristor simulation device according to claim 4, wherein a wave recording playback board is connected to the back board, and the wave recording playback board is configured to record and playback the analog voltage amount, the analog current amount, and the opening/closing instruction processed by the thyristor simulation device.
6. A thyristor semi-physical simulation platform is characterized in that the simulation platform comprises an operation simulation software, a computer storing a thyristor equipment simulation model and a thyristor simulation device in communication connection with the computer; the thyristor simulation device is used for receiving a control signal from a thyristor control protection device and transmitting the control signal to the computer; simulation software in the computer generates simulation process data according to the control signal and the thyristor equipment simulation model; the thyristor simulation device receives simulation process data generated by the simulation software and forwards the simulation process data to the thyristor control protection device; the control signal comprises an opening/closing instruction and a trigger pulse signal; the thyristor simulation device comprises a back plate, wherein a communication plate is connected to the back plate, and a serial port communication unit used for being connected with a computer is arranged on the communication plate; the back plate is connected with a pulse recognition plate, and the pulse recognition plate is used for calculating a trigger angle according to a trigger pulse signal of the thyristor control protection device and a phase synchronization signal issued by simulation software and forwarding the trigger angle to the communication plate.
7. The thyristor semi-physical simulation platform of claim 6, wherein the simulation software is PSCAD or MATLAB.
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| FR2988883A1 (en) * | 2012-04-03 | 2013-10-04 | St Microelectronics Sa | SIMULATION MODEL OF THYRISTOR |
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| Numerical Simulation Of SiC GTO Thyristor Using Finite Element Analysis;Norainon Mohamed等;《2009 International Conference on Electrical Engineering and Informatics》;20091231;第227-231页 * |
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