Generator set control system and control method thereof

Abstract

The invention relates to a generator set control system. A scheduling master station system sends a master station instruction to schedule a data device; a telecontrol system is connected through a network cable; the telecontrol system carries out optical communication data conversion on a master station instruction through a scheduling data device; the telecontrol system is connected to the unit measurement and control device through an optical fiber; simultaneously transmitting the converted optical communication data to a unit measurement and control device through an optical fiber; monitoring data collected by the unit measurement and control device is transmitted to the dispatching master station system; the unit measurement and control device is monitored in real time, remote control operation is carried out, and an alarm signal is output; a telecontrol system device and an automatic voltage control system are combined into a whole, and the problems that in an existing generator set control system, the requirement for operators is improved, meanwhile, repeated collection and repeated transmission are caused by the existence of the same data, data collection is prone to being disordered, and the data transmission efficiency is high are solved. And the operation stability of the power plant is reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to a generator set control system, and more particularly to a generator set control system integrating automatic voltage control and telecontrol functions and a control method thereof. Background Art

[0002] Power plants need to integrate various data in the power system and send them to the monitoring center in a unified manner; they also need to monitor power plant equipment in real time and send out alarm signals in time when faults occur; they need to perform unified remote control operations on various equipment in the power plant; they need to analyze the collected data and generate reports to provide them to management personnel for statistical and decision-making references; and they also need to have automatic voltage control functions to ensure power quality, improve transmission efficiency, reduce network losses, and achieve stable operation of generator sets and power grids.

[0003] In the existing control systems of generator sets, two sets of devices, namely the power plant telecontrol system device and the automatic voltage control system, are set up for independent operation. During the independent operation, it is necessary to operate both the power plant telecontrol system device and the automatic voltage control system, which increases the requirements for operators. At the same time, there are problems of repeated collection and repeated transmission of the same data, which can easily cause confusion in data collection and reduce the stability of power plant operation. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a generator set control system that integrates the power plant telecontrol system device and the automatic voltage control system into one device and integrates the automatic voltage control and telecontrol functions.

[0005] In order to achieve the above object, the embodiment of the present invention designs a generator set control system, including:

[0006] Dispatching master station system;

[0007] Scheduling data device; the scheduling master station system sends a master station instruction to a plurality of the scheduling data devices;

[0008] Telecontrol system, at least one of the dispatching data devices is connected to at least one of the telecontrol systems via a network cable; at least one of the telecontrol systems converts the master station instruction into optical communication data via at least one of the dispatching data devices;

[0009] Unit measurement and control device, at least one of the telecontrol systems is connected to at least one of the unit measurement and control device via an optical fiber; at least one of the telecontrol systems transmits the converted optical communication data to at least one of the unit measurement and control device via the optical fiber at the same time;

[0010] At least one of the telecontrol systems transmits the monitoring data collected by at least one of the unit measurement and control devices to the dispatching master station system through at least one of the dispatching data devices;

[0011] At least one of the telecontrol systems monitors at least one of the unit measurement and control devices in real time, performs remote control operations and outputs alarm signals.

[0012] Furthermore, in the generator set control system of the present invention, the dispatching data device, the telecontrol system, and the unit measurement and control device are redundantly configured.

[0013] Furthermore, in the generator set control system of the present invention, the dispatching master station system is connected to the dispatching data device via a network.

[0014] Further, in the generator set control system of the present invention, any one of the scheduling data devices further includes:

[0015] A dispatching data network, wherein at least one dispatching data network is connected in parallel to the dispatching master station system via a network;

[0016] The dispatching data network switch is connected to the dispatching data network on the dispatching data network; the dispatching master station system sends the master station instruction to the dispatching data network switch through the dispatching data network.

[0017] Furthermore, in the generator set control system of the present invention, the telecontrol system further comprises:

[0018] A communication management machine, in which any dispatching data network switch of the dispatching data device is connected to all the communication management machines through a network cable;

[0019] A synchronous clock device, wherein any one of the communication management machines is connected to the same synchronous clock device; a B code is transmitted between the synchronous clock device and any one of the communication management machines to check the time;

[0020] Station control layer switches, any one of the communication management machines is connected to all the station control layer switches via network cables;

[0021] The first fiber optic terminal box, any of the station control layer switches are connected to all the first fiber optic terminal boxes through fiber optic jumpers; the first fiber optic terminal box is connected to the second fiber optic terminal box on the unit measurement and control device through an optical cable.

[0022] Furthermore, in the generator set control system of the present invention, the generator set measurement and control device further includes:

[0023] A measurement and control device, connected to the second optical fiber terminal box of the unit measurement and control device through an optical cable;

[0024] Control modules: a plurality of control modules are arranged on the measurement and control device; the control modules are connected to the input and output terminals of the unit.

[0025] Furthermore, in the generator set control system of the present invention, the control module further includes:

[0026] A telemetry module is provided on the control module, and the telemetry module is respectively connected to the bus voltage signal, the unit active signal, the unit reactive signal, the excitation voltage signal, the excitation current signal, and the plant power signal through hard wiring;

[0027] A remote signaling module is provided on the control module, and the remote sensing module is respectively connected with the total accident signal, the line switch signal, the generator switch signal, and the protection action signal by hard wiring;

[0028] A remote control module is provided on the control module, and the remote control module is respectively connected to the unit magnetization signal, the unit demagnetization signal, the unit magnetization locking signal, the unit demagnetization locking signal, and the unit AVC on / off signal through hard wiring.

[0029] Furthermore, in the generator set control system of the present invention, the synchronous clock device is a Beidou clock or a GPS clock.

[0030] The present invention also provides a control method for a generator set control system, comprising:

[0031] The dispatching master station system sends the master station instructions through the dispatching data network to the dispatching data network switch; the dispatching data network switch sends the master station instructions to the communication management machine in the telecontrol system, and after the master station instructions are transmitted through the optical fiber of the station control layer switch, the first optical fiber terminal box and the second optical fiber terminal box, the communication management machine performs data collection and transmission, remote control and remote signaling, alarm management, data analysis, monitoring and report generation, and automatic voltage control operations on several unit measurement and control devices in response to the remote control instructions issued by the measurement and control device.

[0032] Further, in the control method of the generator set control system integrating automatic voltage control and telecontrol functions described in the present invention, the unit measurement and control device executes the remote control command issued by the communication management machine; and according to the remote control command;

[0033] The unit measurement and control device collects monitoring data such as bus voltage signal, unit active signal, unit reactive signal, excitation voltage signal, excitation current signal, plant power signal, bus voltage signal, unit active signal, unit reactive signal, excitation voltage signal, excitation current signal, plant power signal, unit magnetization signal, unit demagnetization signal, unit magnetization locking signal, unit demagnetization locking signal, and unit AVC on / off signal through the telemetry module, telesignal module, and remote control module; organizes and packages the data, and feeds back the data to the communication management machine in real time.

[0034] Compared with the prior art, the implementation method of the present invention adopts a dispatching master station system to send a master station instruction to several dispatching data devices; the dispatching data device is connected to the telecontrol system through a network cable; the telecontrol system converts the master station instruction into optical communication data through the dispatching data device; the telecontrol system is connected to the unit measurement and control device through an optical fiber; the telecontrol system simultaneously transmits the converted optical communication data to the unit measurement and control device through the optical fiber; the telecontrol system transmits the monitoring data collected by the unit measurement and control device to the dispatching master station system through the dispatching data device; the telecontrol system monitors the unit measurement and control device in real time, performs remote control operation and outputs alarm signals; realizes the integration of the telecontrol system device and the automatic voltage control system into one, solves the problem that in the existing generator set control system, the power plant telecontrol system device and the automatic voltage control system are set up for independent operation, and during the independent operation process, the power plant telecontrol system device and the automatic voltage control system need to be operated, which increases the requirements for operators, and at the same time, there are problems of repeated collection and repeated transmission of the same data, which easily causes confusion in data collection and reduces the stability of power plant operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the connection structure of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0037] The first embodiment of the present invention relates to a generator set control system, such as Figure 1 As shown, including:

[0038] The generator set control system in this embodiment is mainly a generator set control system that integrates automatic voltage control and telecontrol functions, and provides two redundant systems, namely, the dispatching master station system, the telecontrol system and the unit measurement and control device are all two systems.

[0039] The dispatching master station system mainly issues instructions to each power plant based on the actual needs of the power grid and receives real-time data on the operation of the power plants;

[0040] The dispatching master station system sends master station instructions to several dispatching data devices; the dispatching data devices mainly provide two communication channels.

[0041] At least one dispatching data device is connected to at least one telecontrol system via a network cable; at least one telecontrol system converts the master station command into optical communication data through at least one dispatching data device; the telecontrol system collects various data in the power system in real time, such as voltage, current, power, electricity, etc., by connecting with various sensors and telemetry equipment in the power plant, and then transmits these data to a remote monitoring center or other related equipment.

[0042] The telecontrol system can perform remote control operations, such as remote control of generators, transformers, switchgear, etc. At the same time, it can also receive remote telesignaling signals to monitor and judge the status of various equipment.

[0043] The remote control system can monitor the power plant equipment in real time. When the equipment fails or an abnormal situation occurs, it can promptly issue an alarm signal and transmit the alarm information to relevant personnel so that timely measures can be taken to deal with it.

[0044] Data analysis and report generation: The power plant telecontrol system device can analyze and process the collected data, generate various reports and charts, and provide them to management personnel for statistical and decision-making reference.

[0045] At least one telecontrol system is connected to at least one unit measurement and control device via an optical fiber; at least one telecontrol system transmits the converted optical communication data to at least one unit measurement and control device via the optical fiber at the same time;

[0046] At least one telecontrol system transmits the monitoring data collected by at least one unit measurement and control device to the dispatching master station system through at least one dispatching data device;

[0047] At least one telecontrol system monitors at least one unit measurement and control device in real time, performs remote control operations and outputs alarm signals. The unit measurement and control device is used to collect various real-time data of the power plant, organize and transmit them to the communication management machine; execute the remote control instructions issued by the communication management machine, open signals; receive input signals transmitted by various sensors, telemetry equipment, transmitters, etc. in the plant, and feed them back to the communication management machine in real time.

[0048] In this embodiment, the two sets of devices, namely the telecontrol system device and the automatic voltage control system, are integrated into one, thereby solving the problem that in the existing generator set control system, two sets of devices, namely the power plant telecontrol system device and the automatic voltage control system, are set up for independent operation. During the independent operation, it is necessary to operate both the power plant telecontrol system device and the automatic voltage control system, which increases the requirements for operators. At the same time, there is a problem of repeated collection and repeated transmission of the same data, which easily causes confusion in data collection and reduces the stability of power plant operation.

[0049] In order to achieve the above technical effects, the generator set control system in this embodiment is as follows: Figure 1 As shown, the dispatching data device, telecontrol system, and unit measurement and control device are redundantly configured with two sets each.

[0050] In order to achieve the above technical effects, the generator set control system in this embodiment is as follows: Figure 1 As shown, the dispatching master station system is connected to the dispatching data device through a network.

[0051] In order to achieve the above technical effects, the generator set control system in this embodiment is as follows: Figure 1 As shown, any one of the scheduling data devices also includes:

[0052] The dispatching master station system is connected in parallel to two dispatching data networks through the network; the dispatching data network mainly provides two communication channels.

[0053] Connect the dispatching data network to the dispatching data network; the dispatching master station system sends the master station instruction through the dispatching data network to the dispatching data network switch. The dispatching data network switch mainly provides the function of providing dispatching data network switching.

[0054] In order to achieve the above technical effects, the generator set control system in this embodiment is as follows: Figure 1 As shown, the telecontrol system also includes:

[0055] The two dispatching data network switches in the dispatching data device are connected to all communication management machines through network cables; the communication management machines collect various real-time data of the power plant from the measurement and control devices, and then transmit these data to the remote monitoring center and other equipment that require various real-time data of the power plant.

[0056] Any communication management machine is connected to the same synchronous clock device; the B code is transmitted between the synchronous clock device and any communication management machine to verify the time; the synchronous clock device is mainly used for accurate time synchronization.

[0057] The two communication management machines are connected to all station control layer switches through network cables; the station control layer switches are network devices used to forward electrical and optical signals.

[0058] The two station control layer switches are connected to all the first optical fiber terminal boxes through optical fiber jumpers; the first optical fiber terminal box is connected to the second optical fiber terminal box on the unit measurement and control device through an optical cable. The first optical fiber terminal box mainly plays the role of optical signal relay.

[0059] In order to achieve the above technical effects, the generator set control system in this embodiment is as follows: Figure 1 As shown, the unit measurement and control device also includes:

[0060] The second fiber optic terminal box of the unit's measurement and control device is connected to the measurement and control device through an optical cable; the measurement and control device is used to collect various real-time data of the power plant, organize and transmit them to the communication management machine; execute the remote control instructions issued by the communication management machine and send out signals; receive input signals transmitted by various sensors, telemetry equipment, transmitters, etc. in the plant, and feed back to the communication management machine in real time.

[0061] Several control modules are set on the measurement and control device; the control modules are connected to the input and output terminals of the unit. The control modules are mainly used for the input and output connection of signals.

[0062] In order to achieve the above technical effects, the generator set control system in this embodiment is as follows: Figure 1 As shown,

[0063] The control module in this embodiment further includes: a telemetry module, a telesignaling module, and a remote control module.

[0064] A telemetry module is provided on the control module, and the bus voltage signal, the unit active signal, the unit reactive signal, the excitation voltage signal, the excitation current signal, and the plant power signal are connected to the telemetry module through hard wiring;

[0065] A remote signaling module is set on the control module, and the total accident signal, line switch signal, generator switch signal, and protection action signal are connected to the telemetering module through hard wiring;

[0066] A remote control module is provided on the control module, and the remote control module is respectively connected with the unit magnetization signal, the unit demagnetization signal, the unit magnetization locking signal, the unit demagnetization locking signal, and the unit AVC on / off signal through hard wiring.

[0067] In order to achieve the above technical effects, the generator set control system in this embodiment is as follows: Figure 1 As shown, the synchronous clock device is a Beidou clock or a GPS clock.

[0068] In a second embodiment of the present invention, a control method for a generator set control system is also provided. Figure 1 As shown, including:

[0069] The dispatching master station system sends the master station instructions through the dispatching data network to two dispatching data network switches; one of the dispatching data network switches sends the master station instructions to two communication management machines in the telecontrol system, and after the master station instructions are transmitted through the optical fiber of one of the station control layer switches, one of the first optical fiber terminal boxes and one of the second optical fiber terminal boxes, the remote control instructions issued by the two measurement and control devices are used to perform data collection and transmission, remote control and remote signaling, alarm management, data analysis, monitoring and report generation, and automatic voltage control operations on the measurement and control devices of the two units.

[0070] In the control method of the generator set control system in this embodiment, as shown in FIG. Figure 1 As shown, the unit measurement and control device executes the remote control command issued by the communication management machine; and according to the remote control command;

[0071] Any set of unit measurement and control device collects monitoring data such as bus voltage signal, unit active signal, unit reactive signal, excitation voltage signal, excitation current signal, plant power signal, bus voltage signal, unit active signal, unit reactive signal, excitation voltage signal, excitation current signal, plant power signal, unit magnetization signal, unit demagnetization signal, unit magnetization locking signal, unit demagnetization locking signal, and unit AVC on / off signal through telemetry module, telesignal module and remote control module; organizes and packages the data and feeds them back to the communication management machine in real time.

[0072] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A generator set control system, characterized in that: include: Dispatching master station system; Dispatch data device; The dispatching master station system sends a master station instruction to a plurality of the dispatching data devices; Telecontrol system, at least one of the dispatching data devices is connected to at least one of the telecontrol system via a network cable; At least one of the telecontrol systems converts the master station instructions into optical communication data through at least one of the scheduling data devices; Unit measurement and control device, at least one of the telecontrol systems is connected to at least one of the unit measurement and control device via an optical fiber; at least one of the telecontrol systems transmits the converted optical communication data to at least one of the unit measurement and control device via the optical fiber at the same time; At least one of the telecontrol systems transmits the monitoring data collected by at least one of the unit measurement and control devices to the dispatching master station system through at least one of the dispatching data devices; At least one of the telecontrol systems monitors at least one of the unit measurement and control devices in real time, performs remote control operations and outputs alarm signals.

2. The generator set control system according to claim 1, characterized in that: The dispatching data device, the remote control system, and the unit measurement and control device are redundantly configured.

3. The generator set control system according to claim 1, characterized in that: The dispatching master station system is connected to the dispatching data device via a network.

4. The generator set control system according to claim 1, characterized in that: Any one of the scheduling data devices further comprises: A dispatching data network, wherein at least one dispatching data network is connected in parallel to the dispatching master station system via a network; The dispatching data network switch is connected to the dispatching data network on the dispatching data network; the dispatching master station system sends the master station instruction to the dispatching data network switch through the dispatching data network.

5. The generator set control system according to claim 1, characterized in that: The telecontrol system further comprises: A communication management machine, in which any dispatching data network switch of the dispatching data device is connected to all the communication management machines through a network cable; A synchronous clock device, wherein any one of the communication management machines is connected to the same synchronous clock device; a B code is transmitted between the synchronous clock device and any one of the communication management machines to check the time; Station control layer switches, any one of the communication management machines is connected to all the station control layer switches via network cables; The first fiber optic terminal box, any of the station control layer switches are connected to all the first fiber optic terminal boxes through fiber optic jumpers; the first fiber optic terminal box is connected to the second fiber optic terminal box on the unit measurement and control device through an optical cable.

6. The generator set control system according to claim 1, characterized in that: The unit measurement and control device also includes: A measurement and control device, connected to the second optical fiber terminal box of the unit measurement and control device through an optical cable; Control modules: a plurality of control modules are arranged on the measurement and control device; the control modules are connected to the input and output terminals of the unit.

7. The generator set control system according to claim 6, characterized in that: The control module further includes: A telemetry module is provided on the control module, and the telemetry module is respectively connected to the bus voltage signal, the unit active signal, the unit reactive signal, the excitation voltage signal, the excitation current signal, and the plant power signal through hard wiring; A remote signaling module is provided on the control module, and the remote sensing module is respectively connected with the total accident signal, the line switch signal, the generator switch signal, and the protection action signal by hard wiring; A remote control module is provided on the control module, and the remote control module is respectively connected to the unit magnetization signal, the unit demagnetization signal, the unit magnetization locking signal, the unit demagnetization locking signal, and the unit AVC on / off signal through hard wiring.

8. The generator set control system according to claim 5, characterized in that: The synchronous clock device is a Beidou clock or a GPS clock.

9. A control method for a generator set control system, characterized in that: include: The dispatching master station system sends the master station instructions through the dispatching data network to the dispatching data network switch; the dispatching data network switch sends the master station instructions to the communication management machine in the telecontrol system, and after the master station instructions are transmitted through the optical fiber of the station control layer switch, the first optical fiber terminal box and the second optical fiber terminal box, the communication management machine performs data collection and transmission, remote control and remote signaling, alarm management, data analysis, monitoring and report generation, and automatic voltage control operations on several unit measurement and control devices in response to the remote control instructions issued by the measurement and control device.

10. The control method of the generator set control system according to claim 9, characterized in that: The unit measurement and control device executes the remote control command issued by the communication management machine; and according to the remote control command; The unit measurement and control device collects monitoring data such as bus voltage signal, unit active signal, unit reactive signal, excitation voltage signal, excitation current signal, plant power signal, bus voltage signal, unit active signal, unit reactive signal, excitation voltage signal, excitation current signal, plant power signal, unit magnetization signal, unit demagnetization signal, unit magnetization locking signal, unit demagnetization locking signal, and unit AVC on / off signal through the telemetry module, telesignal module, and remote control module; organizes and packages the data, and feeds back the data to the communication management machine in real time.

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