1. A fault simulation method for a high-voltage direct-current converter station in a three-dimensional virtual scene is characterized by comprising the following steps: the method operates based on a fault simulation system; the simulation system comprises:

the system comprises an electromagnetic transient simulation platform, a three-dimensional virtual reality server, a fault entry system, an operation control background and a data interaction platform; the operation control background is respectively in information transmission connection with the fault entry system and the data interaction platform, and the data interaction platform is respectively in information transmission connection with the electromagnetic transient simulation platform and the three-dimensional virtual reality server;

the method comprises the following steps:

the method comprises the following steps that firstly, in the modeling process, a real high-voltage direct-current project is referred, a Unity 3D engine technology is adopted to model a scene of a direct-current converter station in a three-dimensional scene in a moderate proportion through a three-dimensional virtual reality server of a fault simulation system; performing high-precision modeling on a primary system and a secondary control and protection device of the high-voltage direct-current converter station by adopting PSCAD simulation software through an electromagnetic transient simulation platform;

step two, data processing, namely sending a control instruction to a fault recording system by an operation control background of a fault simulation system, so that the fault recording system retrieves specified fault recording data from fault recording data generated by faults of an actual engineering converter station stored in the fault recording system and transmits the specified fault recording data to an electromagnetic transient simulation platform through a data interaction platform;

step three, an electromagnetic transient simulation platform of a simulation operation simulation fault simulation system executes simulation operation simulation fault on specified fault recording data in the established high-precision models of the primary system and the secondary control and protection device through PSCAD simulation software, and transmits semaphore and events formed by the simulation fault to an operation control background and a three-dimensional virtual reality server through a data interaction platform;

and fourthly, generating the three-dimensional simulation animation, operating the control background to send a control instruction to the three-dimensional virtual reality server, and generating the fault three-dimensional simulation animation in the scene model of the direct current converter station by the three-dimensional virtual reality server through the semaphore and the event formed by the electromagnetic transient simulation platform.

2. The method for simulating the fault of the high-voltage direct-current converter station in the three-dimensional virtual scene according to claim 1, wherein the method comprises the following steps: the second step also comprises another data processing mode, which specifically comprises the following steps: and the operation control background directly inputs fault recording data and transmits the fault recording data to the electromagnetic transient simulation platform through the data interaction platform.

3. The method for simulating the fault of the high-voltage direct-current converter station in the three-dimensional virtual scene according to claim 1, wherein the method comprises the following steps: the modeling of the scene of the direct current converter station by the three-dimensional virtual reality server comprises the following steps:

the method comprises the steps that an external scene model of the high-voltage direct current converter station and an internal scene model of the high-voltage direct current converter station are obtained;

wherein, the scene model outside the HVDC convertor station includes: the system comprises a scene module of a direct current field and an alternating current-direct current filtering field, a device switch module of a converter transformer, a circuit breaker, a lightning arrester, an isolating switch and a grounding disconnecting link, a local operation module of an incoming line switch, a pressing plate and a button, and a function module of equipment abnormal display, protection state deflection information and the like;

the scene model in the high-voltage direct current converter station comprises: the indoor scene comprises scene modules of an electrode 1/electrode 2 control protection room, a low-end valve cold room, a low-end equipment room, a high-end control protection room, a high-end valve cold room, a high-end equipment room, a relay room, power consumption of a 35kV station and power consumption of a 10kV station, a low-end valve hall and a high-end valve module.

4. The method for simulating the fault of the high-voltage direct-current converter station in the three-dimensional virtual scene according to claim 1, wherein the method comprises the following steps: by the method, simulation operation simulation can be performed on short-circuit faults of the converter valves in the actual engineering converter station, and three-dimensional simulation animations of the short-circuit faults of the converter valves are generated.

5. The method for simulating the fault of the high-voltage direct-current converter station in the three-dimensional virtual scene according to claim 1, wherein the method comprises the following steps: by the method, simulation operation simulation can be performed on the alternating current short-circuit fault in the actual engineering converter station, and the three-dimensional simulation animation of the alternating current short-circuit fault is generated.

6. The method for simulating the fault of the high-voltage direct-current converter station in the three-dimensional virtual scene according to claim 1, wherein the method comprises the following steps: by the method, simulation operation simulation can be performed on the direct-current line ground fault in the actual engineering converter station, and the direct-current line ground fault three-dimensional simulation animation can be generated.

Background

The high-voltage direct-current transmission voltage is high, the transmission power is high, and once a fault occurs, the chain reaction of an alternating current-direct current system can be caused, so that huge examination is brought to the stability of the system. On the other hand, the converter station staff skill is difficult to meet the maintenance requirements of the high-voltage direct-current converter station. The skilled person needs to know the principles of the entire control system and protection system in order to better maintain the system. At present, a new worker is generally trained on familiar operation and the like by adding all states of a power station to a simulation learning system in advance aiming at an alternating current substation, but the training function of the simulation system is single, so that the promotion effect of the skilled grasping of the new worker is not obvious.

Disclosure of Invention

In order to solve the problems, the invention provides a fault simulation method for a high-voltage direct-current converter station in a three-dimensional virtual scene.

The technical scheme adopted by the invention is as follows:

a three-dimensional virtual scene high-voltage direct current converter station fault simulation method is operated based on a fault simulation system; the simulation system comprises:

the system comprises an electromagnetic transient simulation platform, a three-dimensional virtual reality server, a fault entry system, an operation control background and a data interaction platform; the operation control background is respectively in information transmission connection with the fault entry system and the data interaction platform, and the data interaction platform is respectively in information transmission connection with the electromagnetic transient simulation platform and the three-dimensional virtual reality server;

the method comprises the following steps:

the method comprises the following steps that firstly, in the modeling process, a real high-voltage direct-current project is referred, a Unity 3D engine technology is adopted to model a scene of a direct-current converter station in a three-dimensional scene in a moderate proportion through a three-dimensional virtual reality server of a fault simulation system; performing high-precision modeling on a primary system and a secondary control and protection device of the high-voltage direct-current converter station by adopting PSCAD simulation software through an electromagnetic transient simulation platform;

step two, data processing, namely sending a control instruction to a fault recording system by an operation control background of a fault simulation system, so that the fault recording system retrieves specified fault recording data from fault recording data generated by faults of an actual engineering converter station stored in the fault recording system and transmits the specified fault recording data to an electromagnetic transient simulation platform through a data interaction platform;

step three, an electromagnetic transient simulation platform of a simulation operation simulation fault simulation system executes simulation operation simulation fault on specified fault recording data in the established high-precision models of the primary system and the secondary control and protection device through PSCAD simulation software, and transmits semaphore and events formed by the simulation fault to an operation control background and a three-dimensional virtual reality server through a data interaction platform;

and fourthly, generating the three-dimensional simulation animation, operating the control background to send a control instruction to the three-dimensional virtual reality server, and generating the fault three-dimensional simulation animation in the scene model of the direct current converter station by the three-dimensional virtual reality server through the semaphore and the event formed by the electromagnetic transient simulation platform.

Further, the second step further includes another data processing mode, specifically: and the operation control background directly inputs fault recording data and transmits the fault recording data to the electromagnetic transient simulation platform through the data interaction platform.

Further, the modeling of the scene of the direct current converter station by the three-dimensional virtual reality server includes:

the method comprises the steps that an external scene model of the high-voltage direct current converter station and an internal scene model of the high-voltage direct current converter station are obtained;

wherein, the scene model outside the HVDC convertor station includes: the system comprises a scene module of a direct current field and an alternating current-direct current filtering field, a device switch module of a converter transformer, a circuit breaker, a lightning arrester, an isolating switch and a grounding disconnecting link, a local operation module of an incoming line switch, a pressing plate and a button, and a function module of equipment abnormal display, protection state deflection information and the like;

the scene model in the high-voltage direct current converter station comprises: the indoor scene comprises scene modules of an electrode 1/electrode 2 control protection room, a low-end valve cold room, a low-end equipment room, a high-end control protection room, a high-end valve cold room, a high-end equipment room, a relay room, power consumption of a 35kV station and power consumption of a 10kV station, a low-end valve hall and a high-end valve module.

Further, the method can be used for carrying out simulation operation simulation on the short-circuit fault of the converter valve in the actual engineering converter station and generating the three-dimensional simulation animation of the short-circuit fault of the converter valve.

Further, the method can be used for carrying out simulation operation simulation on the alternating current short-circuit fault in the actual engineering converter station and generating the three-dimensional simulation animation of the alternating current short-circuit fault.

Further, the method can be used for carrying out simulation operation simulation on the direct-current line ground fault in the actual engineering converter station and generating the direct-current line ground fault three-dimensional simulation animation.

The invention has the beneficial effects that:

the method for simulating the fault of the high-voltage direct-current converter station in the three-dimensional virtual scene is based on a direct-current control protection off-line simulation platform, the scene of the direct-current converter station is subjected to three-dimensional modeling through a three-dimensional virtual reality server of a fault simulation system, and a primary system and a secondary control protection device of the high-voltage direct-current converter station are subjected to high-precision language modeling through an electromagnetic transient simulation platform; simulating fault recording data generated by faults of the actual engineering converter station through simulation operation on the electromagnetic transient simulation platform; and finally, generating a fault three-dimensional simulation animation through the three-dimensional virtual reality server, visualizing the equipment fault of the converter station through the fault three-dimensional simulation animation, performing specialized training on scheduling, operating and overhauling personnel, improving the direct current control protection performance and ensuring the safe operation of a large power grid.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic flow chart of the present invention;

FIG. 3 is a view of an external scene model of the HVDC convertor station according to the present invention;

fig. 4 is a view of a scene model in the high-voltage direct current converter station according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

The invention relates to a fault simulation method for a high-voltage direct-current converter station in a three-dimensional virtual scene, which is operated based on a fault simulation system; as shown in fig. 1, the fault simulation system includes: the system comprises an electromagnetic transient simulation platform, a three-dimensional virtual reality server, a fault entry system, an operation control background and a data interaction platform; the operation control background is respectively in information transmission connection with the fault entry system and the data interaction platform, and the data interaction platform is respectively in information transmission connection with the electromagnetic transient simulation platform and the three-dimensional virtual reality server.

The electromagnetic transient simulation platform, the three-dimensional virtual reality server, the fault entry system and the data interaction platform have the functions that:

the electromagnetic transient simulation platform mainly adopts PSCAD simulation software to carry out high-precision language modeling on a primary system module and a secondary system control and protection module of the high-voltage direct-current converter station by referring to an actual engineering converter station.

The three-dimensional virtual reality server is used for modeling the direct current converter station in a three-dimensional scene in a medium proportion by referring to an actual high-voltage direct current project; and performing three-dimensional simulation on primary equipment and secondary equipment of the converter station by adopting a Unity 3D engine technology, and realizing the display and operation of the equipment in a three-dimensional scene.

The three-dimensional modeling of the scene of the direct current converter station by the three-dimensional virtual reality server comprises the following steps: the system comprises a high-voltage direct current converter station external scene model and a high-voltage direct current converter station internal scene model, wherein the high-voltage direct current converter station external scene model and the high-voltage direct current converter station internal scene model are shown in figures 3-4.

The scene model outside the high-voltage direct current converter station comprises the following modules: the system comprises a scene module of a direct current field and an alternating current-direct current filtering field, a device switch module of a converter transformer, a circuit breaker, a lightning arrester, an isolating switch and a grounding disconnecting link, a local operation module of an incoming line switch, a pressing plate and a button, and a function module of equipment abnormal display, protection state deflection information and the like;

the scene model in the high-voltage direct current converter station comprises the following modules: the indoor scene comprises scene modules of an electrode 1/electrode 2 control protection room, a low-end valve cold room, a low-end equipment room, a high-end control protection room, a high-end valve cold room, a high-end equipment room, a relay room, power consumption of a 35kV station and power consumption of a 10kV station, a low-end valve hall and a high-end valve module.

The fault recording system can store fault recording data generated by faults of the actual engineering converter station. The data interaction platform can adopt different communication mechanisms to carry out data transmission with other platforms, and the reliable communication among the platforms is ensured.

As shown in fig. 2, the method for simulating the fault of the high-voltage direct current converter station in the three-dimensional virtual scene is performed according to the following steps:

step one, modeling process: according to the actual high-voltage direct-current engineering, three-dimensional modeling is carried out on the scene of the direct-current converter station in a three-dimensional scene in a moderate proportion by adopting a Unity 3D engine technology through a three-dimensional virtual reality server of a fault simulation system; and performing high-precision language modeling on a primary system and a secondary control and protection device of the high-voltage direct-current converter station by adopting a PSCAD simulation software through an electromagnetic transient simulation platform.

Step two, data processing: and the operation control background of the fault simulation system sends a control instruction to the fault recording system, so that the fault recording system retrieves specified fault recording data from fault recording data generated by faults of the actual engineering converter station stored in the fault recording system and transmits the specified fault recording data to the electromagnetic transient simulation platform through the data interaction platform.

Or another data processing mode: and the operation control background directly inputs fault recording data and transmits the fault recording data to the electromagnetic transient simulation platform through the data interaction platform.

Simulating a fault by using simulation operation: the electromagnetic transient simulation platform of the fault simulation system executes simulation operation on specified fault recording data to simulate faults in the established high-precision language models of the primary system and the secondary control and protection device through PSCAD simulation software, and transmits semaphore and events formed by the simulated faults to the operation control background and the three-dimensional virtual reality server through the data interaction platform.

Step four, generating three-dimensional simulation animation: and the operation control background sends a control instruction to the three-dimensional virtual reality server, and the three-dimensional virtual reality server generates a fault three-dimensional simulation animation in a scene model of the direct current converter station through the semaphore and the event formed by the electromagnetic transient simulation platform.

In order to further verify the feasibility of the high-voltage direct-current converter station fault simulation method of the three-dimensional virtual scene, the converter valve short-circuit fault, the XX fault, the alternating-current short-circuit fault and the direct-current line ground fault in the actual engineering converter station are explained in detail.

(1) Aiming at short-circuit faults of converter valves in a practical engineering converter station; firstly, an operator sends a control instruction to a fault recording system through an operation control background of a fault simulation system, the fault recording system retrieves fault recording data of short-circuit faults of converter valves from fault recording data generated by faults of actual engineering converter stations stored in the fault recording system, and the fault recording data are transmitted to an electromagnetic transient simulation platform through a data interaction platform. It should be noted that the data interaction platform performs language conversion of different communication mechanisms in the process, and converts the fault recording data into a C language that can be read by the electromagnetic transient simulation platform.

And then, the electromagnetic transient simulation platform executes simulation operation on the short-circuit fault recording data of the converter valve to simulate faults in the established high-precision language models of the primary system and the secondary control and protection device through PSCAD simulation software, arranges the semaphores and events formed by the simulation faults according to a certain logic sequence, and finally transmits the signals to the operation control background and the three-dimensional virtual reality server through the data interaction platform.

And finally, operating the control background to send a control instruction to the three-dimensional virtual reality server, and calling the following modules in an external scene model of the high-voltage direct current converter station and an internal scene model of the high-voltage direct current converter station by the three-dimensional virtual reality server through the semaphore and the event of a tool formed by the electromagnetic transient simulation platform:

the system comprises a direct current field scene module, an alternating current and direct current filtering field scene module and a pole 1/pole 2 control protection room scene module; the device comprises a converter transformer device module, a breaker device module, an isolating switch module and a grounding knife switch module; the local operation module comprises an incoming line switch, a pressing plate and a button;

and the three-dimensional virtual reality server integrates the called modules according to the semaphore and the logic sequence of the event, and generates a three-dimensional simulation animation of the short-circuit fault of the converter valve in a scene model of the direct-current converter station.

(2) Aiming at the AC short-circuit fault in the actual engineering converter station; firstly, an operator sends a control instruction to a fault recording system through an operation control background of a fault simulation system, the fault recording system retrieves fault recording data of an alternating current short-circuit fault from fault recording data generated by faults of an actual engineering converter station stored in the fault recording system, and the fault recording data are transmitted to an electromagnetic transient simulation platform through a data interaction platform. It should be noted that the data interaction platform performs language conversion of different communication mechanisms in the process, and converts the fault recording data into a C language that can be read by the electromagnetic transient simulation platform.

And then, the electromagnetic transient simulation platform executes simulation operation simulation faults on the alternating current short-circuit fault recording data in the established high-precision language models of the primary system and the secondary control and protection device through PSCAD simulation software, arranges the semaphores and events formed by the simulation faults according to a certain logic sequence, and finally transmits the signals and the events to the operation control background and the three-dimensional virtual reality server through the data interaction platform.

And finally, operating the control background to send a control instruction to the three-dimensional virtual reality server, and calling the following modules in an external scene model of the high-voltage direct current converter station and an internal scene model of the high-voltage direct current converter station by the three-dimensional virtual reality server through the semaphore and the event of a tool formed by the electromagnetic transient simulation platform:

the system comprises a direct current field scene module, an alternating current and direct current filtering field scene module and a pole 1/pole 2 control protection room scene module; the device comprises a converter transformer device module, a breaker device module, an isolating switch module and a grounding knife switch module; the local operation module comprises an incoming line switch, a pressing plate and a button;

and the three-dimensional virtual reality server integrates the called modules according to the semaphore and the logic sequence of the event, and generates an alternating current short circuit fault three-dimensional simulation animation in a scene model of the direct current converter station.

(3) Aiming at the direct current line ground fault in the actual engineering converter station; firstly, an operator sends a control instruction to a fault recording system through an operation control background of a fault simulation system, and the fault recording system retrieves fault recording data of a direct-current line ground fault from fault recording data generated by faults of an actual engineering converter station stored in the fault recording system and transmits the fault recording data to an electromagnetic transient simulation platform through a data interaction platform. It should be noted that the data interaction platform performs language conversion of different communication mechanisms in the process, and converts the fault recording data into a C language that can be read by the electromagnetic transient simulation platform.

And then, the electromagnetic transient simulation platform executes simulation operation simulation faults on direct current line ground fault recording data in the established high-precision language models of the primary system and the secondary control and protection device through PSCAD simulation software, arranges semaphore and events formed by the simulation faults according to a certain logic sequence, and finally transmits the semaphore and the events to the operation control background and the three-dimensional virtual reality server through the data interaction platform.

And finally, operating the control background to send a control instruction to the three-dimensional virtual reality server, and calling the following modules in an external scene model of the high-voltage direct current converter station and an internal scene model of the high-voltage direct current converter station by the three-dimensional virtual reality server through the semaphore and the event of a tool formed by the electromagnetic transient simulation platform:

the system comprises a direct current field scene module, a pole 1/pole 2 control protection room scene module and an incoming line switch module.

And the three-dimensional virtual reality server integrates the called modules according to the semaphore and the logic sequence of the event, and generates a direct-current line ground fault three-dimensional simulation animation in a scene model of the direct-current converter station.

In conclusion, the method for simulating the fault of the high-voltage direct-current converter station in the three-dimensional virtual scene is based on the direct-current control protection off-line simulation platform, the scene of the direct-current converter station is subjected to three-dimensional modeling through the three-dimensional virtual reality server of the fault simulation system, and the primary system and the secondary control protection device of the high-voltage direct-current converter station are subjected to high-precision language modeling through the electromagnetic transient simulation platform; simulating fault recording data generated by faults of the actual engineering converter station through simulation operation on the electromagnetic transient simulation platform; and finally, generating a fault three-dimensional simulation animation through the three-dimensional virtual reality server, and enabling equipment faults of the converter station to be visualized through the fault three-dimensional simulation animation, so that specialized training can be performed on scheduling, operating and overhauling personnel, the direct-current control protection performance is improved, and the safe operation of a large power grid is guaranteed.

It should be noted that: the method for simulating the faults of the high-voltage direct-current converter station in the three-dimensional virtual scene can simulate the faults by simulation operation aiming at short-circuit faults of converter valves, alternating-current short-circuit faults and direct-current line ground faults in the converter station in the actual engineering, generates a three-dimensional simulation animation of the faults through the three-dimensional virtual reality server, and is also suitable for other faults in the converter station in the actual engineering.