Wind power monitoring system and wind power plant integrated system

Abstract

The embodiment of the utility model discloses a wind power monitoring system and a wind power plant integrated system, belongs to the technical field of wind power generation, and relates to a wind power monitoring system capable of realizing multi-terminal interlocking control. The system comprises a booster station monitoring device which is connected with a fan power system of a wind power plant and is used for collecting monitoring information of the wind power plant; the time synchronization device is connected with the booster station monitoring device and used for synchronizing time information of the booster station monitoring device; the booster station monitoring device is also connected with a scheduling end and is used for synchronizing the monitoring information to the scheduling end; the booster station monitoring device is synchronized with the time information of the scheduling end through the time synchronization device; and the booster station monitoring device and the dispatching end are also connected with the fan power system through interval equipment, and are used for selecting the booster station monitoring device or the dispatching end to execute control operation on the fan power system through the interval equipment.

Description

Technical Field

[0001] This document relates to the field of wind power generation technology, and in particular to a wind power monitoring system and a wind farm integration system. Background Technology

[0002] Wind energy, as a clean and renewable energy source, has received widespread attention globally, and related energy application technologies are developing rapidly. A wind power system mainly consists of wind turbine generators, towers, foundations, and related supporting facilities. The wind turbine generators, driven by wind power, rotate their blades, which in turn drive a generator to produce electricity. With technological advancements and increased environmental awareness, the implementation of new wind power projects can significantly contribute to local energy transition and reduce greenhouse gas emissions. To ensure efficient and stable system operation, monitoring systems can be used to determine the operational status of wind power generation, providing a basis for targeted, efficient power generation strategies and safe adjustment and control operations.

[0003] Currently, ordinary wind power monitoring systems are often used in wind farms with suitable temperatures, and system monitoring is achieved through remote dispatching. However, in environments with frequent low temperatures, ordinary monitoring systems are prone to failures in cables, equipment, software, and networks, which can lead to the failure of remote dispatching, resulting in high system safety risks and low reliability. In addition, manual inspections in low-temperature weather will also face difficulties. Summary of the Invention

[0004] The purpose of the embodiments in this specification is to provide a wind power monitoring system and a wind farm integration system, which avoids the low reliability caused by the easy failure of ordinary wind power monitoring systems in low-temperature environments, and realizes a wind power monitoring system with multi-terminal interlocking control, reducing manual inspection and lowering operation and maintenance costs.

[0005] To achieve the above objectives, the embodiments in this specification adopt the following solutions:

[0006] Firstly, a wind power monitoring system is provided, comprising:

[0007] The booster station monitoring device is connected to the wind turbine power system of the wind farm and is used to collect monitoring information of the wind farm.

[0008] A time synchronization device, connected to the booster station monitoring device, is used to synchronize the time information of the booster station monitoring device;

[0009] The booster station monitoring device is also connected to the dispatch terminal for synchronizing the monitoring information to the dispatch terminal;

[0010] The booster station monitoring device synchronizes its time information with that of the dispatching terminal through the time synchronization device; the booster station monitoring device and the dispatching terminal are also connected to the wind turbine power system through an interval device, which is used to select the booster station monitoring device or the dispatching terminal to perform control operations on the wind turbine power system through the interval device.

[0011] The booster station monitoring device includes: a bay-level measurement and control device connected to the wind turbine power system for collecting the monitoring information; and a station control layer monitoring device connected to the bay-level measurement and control device for acquiring the monitoring information and executing monitoring strategies corresponding to each monitoring information; wherein the bay-level measurement and control device is also connected to the dispatch terminal for synchronizing the monitoring information to the dispatch terminal.

[0012] The monitoring and control screen is connected to the interval layer monitoring and control device and is used to display the monitoring information; the monitoring and control screen is also connected to the interval equipment, and the station control layer monitoring device is also connected to the interval equipment, and is used to select one of the dispatch terminal, the station control layer monitoring device and the monitoring and control screen to perform control operations on the wind turbine power system through the interval equipment; the monitoring and control screen is equipped with a remote / local control switching switch and a trip / close button;

[0013] The monitoring and control panel is also used to respond to command operations and switch the control terminal of the interval equipment to the monitoring device of the booster station or the dispatch terminal.

[0014] The interval equipment includes circuit breakers and disconnect switches, which are controlled from three locations: the dispatching terminal, the station monitoring host, and the measurement and control panel. They are interlocked with each other, and can only be controlled from one location at a time. The interlocking function is achieved by controlling the circuit breaker through the monitoring host keyboard, or by receiving commands from the dispatching terminal to trip or close the circuit breaker, or, in an emergency, by operating the control switch or trip / close button on the control / protection measurement and control panel or switchgear.

[0015] The interval equipment includes three sets of switches. The first set of switches K1, the second set of switches K2, and the third set of switches K3 are interlocked to ensure that only one set of switches can perform control operations on the lines PL1, PL2, and PL3 of each wind turbine generator in the wind turbine power system within the same time interval. The dispatch terminal controls the first set of switches K1, the station control layer monitoring device controls the second set of switches K2, and the measurement and control panel controls the third set of switches K3.

[0016] Furthermore, the time synchronization device includes:

[0017] The primary time synchronization host and the backup time synchronization host are respectively connected to the monitoring device of the booster station; both the primary time synchronization host and the backup time synchronization host adopt a dual power supply mode.

[0018] Furthermore, the time synchronization device, the interval device, and the booster station monitoring device are installed at the booster station;

[0019] The booster station includes a secondary integrated protection room and a main control room; the equipment belonging to the interval layer in the booster station monitoring device and the time synchronization device are both located in the secondary integrated protection room.

[0020] Furthermore, the wind turbine power system includes a wind turbine generator set, a prefabricated substation, and a wind turbine monitoring system;

[0021] The wind turbine monitoring system is located in the secondary integrated protection room;

[0022] The booster station monitoring device is connected to the wind turbine monitoring system and is used to synchronize the monitoring information of the wind turbine generator set and the box-type substation to the dispatch terminal.

[0023] Furthermore, the booster station monitoring device is used to control the interval equipment to perform operations within a first time interval, and the interval equipment is used to disconnect the connection between the interval equipment and the dispatching terminal within the first time interval; or

[0024] The interval device is used to perform operations under the control of the scheduling terminal during the second time interval, and the interval device is also used to disconnect the connection between the interval device and the booster station monitoring device during the second time interval; the intersection of the second time interval and the first time interval is empty.

[0025] Firstly, a wind farm integrated system is provided, comprising:

[0026] The wind turbine power system of the wind farm, and the wind power monitoring system connected to the wind turbine power system, wherein the wind power monitoring system is the wind power monitoring system in any of the above technical solutions.

[0027] Furthermore, the wind turbine power system includes a wind turbine generator set, a prefabricated substation, and a wind turbine monitoring system;

[0028] The wind turbine monitoring system includes a local monitoring system and a centralized monitoring system. The local monitoring system is integrated with the wind turbine generator set, and the centralized monitoring system is integrated with the wind power monitoring system.

[0029] In the embodiments of this specification, the booster station monitoring device (not the field monitoring and diagnostic system) collects monitoring information of the wind turbine power system of the wind farm. The booster station monitoring device synchronizes the time through a time synchronization device to ensure the real-time and effectiveness of the monitoring information. At the same time, the booster station monitoring device also determines the time information of the monitoring information through the time synchronization device and synchronizes it with the time information of the dispatching terminal. The booster station monitoring device and the dispatching terminal selectively control the wind turbine power system through an interval device, thereby realizing multi-terminal monitoring and control based on shared and synchronized monitoring information. When one end fails, the other end can still realize power system control without waiting for manual inspection and restoration. This can provide reliability support for the application of wind power monitoring systems in low-temperature environments and provide a monitoring system foundation for ensuring the stable operation of wind power generation power systems.

[0030] Other features and advantages of the embodiments described herein will be described in detail in the following detailed description section. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings:

[0032] Figure 1 This is a schematic diagram of an exemplary wind power monitoring system according to an embodiment of this specification;

[0033] Figure 2 This is a schematic diagram illustrating the layout of an exemplary wind power monitoring system according to an embodiment of this specification.

[0034] Figure 3 This is a schematic diagram of an exemplary multi-terminal control interlocking switch connection structure according to an embodiment of this specification;

[0035] Figure 4 This is a schematic diagram of an exemplary multi-terminal control interlocking switch connection structure according to an embodiment of this specification;

[0036] Figure 5 This is a schematic diagram illustrating the layout of an exemplary wind farm integrated system according to an embodiment of this specification. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this document.

[0038] As mentioned earlier, conventional wind power monitoring systems typically employ single-end control to determine the operating status of wind turbine generators (wind turbines). For example, a wind turbine generator vibration online monitoring and fault diagnosis system could be tentatively used to determine the vibration status of the wind turbine. This system consists of a field monitoring and diagnosis system, a data communication network system, and a remote diagnosis system; these systems are sequentially connected. The field monitoring and diagnosis system includes a host computer engineering station and several wind turbine generators, wind turbine sensors, and signal processing boxes. Each set of wind turbine generators, wind turbine sensors, and signal processing boxes is connected in series to the host computer engineering station. The wind turbine generator consists of a generator, gearbox, and main bearing connected in series. The data communication network system consists of a local browser, a firewall, and the Internet (providing communication data security) sequentially connected. The remote diagnosis system consists of a remote diagnosis center, a group expert workstation, a factory expert workstation, and an enterprise expert workstation. The remote diagnosis center is connected to each of these workstations.

[0039] However, in some regions where low temperatures prevail year-round, equipment and communication infrastructure are easily affected by weather changes, leading to malfunctions or interruptions. In particular, after disasters such as blizzards and freezing, power cables and communication towers are very vulnerable to damage, resulting in power loss at base stations and communication interruptions. Faults / damage to external cables and communication facilities will affect the connection between the host computer engineering station and the wind turbine power system and / or the connection between the remote diagnostic system and the on-site monitoring and diagnostic system. At the same time, the host computer engineering station is often used to control the power equipment of the power system, while the remote diagnostic system is mainly used for expert consultations on vibration conditions and is not connected to the power equipment of the power system in a controllable manner. The control operation is only performed by the host computer engineering station, and the remote diagnostic system cannot control the power equipment of the wind power generation system. The overall reliability of the system is low in low-temperature areas. When facing communication and equipment failures in low-temperature areas, manual inspection and on-site troubleshooting will be required, which is very difficult to achieve in low-temperature environments.

[0040] In view of this, the solution in this specification provides a wind power monitoring system and a wind farm integration system. The wind power monitoring system is a system that integrates multiple functions such as monitoring information collection, information synchronization and control execution. It can monitor the operating status of the wind turbine power system, the wind farm environment and the power grid status from multiple terminals. It also supports multiple terminals to jointly analyze and select one to control the wind turbine power system, improve the reliability of the monitoring system of wind farms in low-temperature areas, reduce manual inspections, and provide a basis for the operation and maintenance management of wind farms.

[0041] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0042] One embodiment of this specification provides a wind power monitoring system that can be applied to wind farms in low-temperature regions, such as... Figure 1 The wind power monitoring system may include:

[0043] The booster station monitoring device is connected to the wind turbine power system of the wind farm and is used to collect monitoring information of the wind farm.

[0044] A time synchronization device is connected to the booster station monitoring device and is used to synchronize the time information of the booster station monitoring device (time synchronization to the booster station monitoring device).

[0045] The booster station monitoring device is also connected to the dispatch terminal for synchronizing the monitoring information to the dispatch terminal;

[0046] The booster station monitoring device synchronizes its time information with that of the dispatching terminal via the time synchronization device. The booster station monitoring device and the dispatching terminal are also connected to the wind turbine power system via a bayonet, which allows the bayonet to select either the booster station monitoring device or the dispatching terminal to perform control operations on the wind turbine power system. Specifically, when the bayonet selects the booster station monitoring device as the master control terminal, the booster station monitoring device performs local control operations on the wind turbine power system via the bayonet; when the bayonet selects the dispatching terminal as the master control terminal, the dispatching terminal performs dispatch control operations on the wind turbine power system via the bayonet. The bayonet can be installed on the transmission line between the wind turbine power system and the power grid.

[0047] In the embodiments of this specification, low-temperature regions can be determined using indicators. For example, low-temperature regions can be determined using dimensional indicators or temperature indicators. For instance, regions in my country whose lowest latitude is higher than a specified latitude or regions whose average temperature is lower than a specified number of months / days are greater than a specified number can be determined as the aforementioned low-temperature regions.

[0048] In some possible implementations, the booster station monitoring device can be a monitoring device installed at the booster substation (booster station) of the wind farm. The booster station monitoring device can be implemented by a microcomputer device with computing and instruction processing capabilities, such as a workstation, server, or industrial control computer. The booster station monitoring device can include microcomputer devices that perform functions such as control, protection, measurement, signaling, fault recording, and remote control, and the devices can support information transmission and resource sharing. For example, the wind turbine power system can include multiple wind turbine generators and corresponding prefabricated substations in a wind farm located in a low-temperature region. The booster station may include a main transformer unit connected to the booster station monitoring device. This main transformer unit is connected to the wind turbine generator set through the box-type substation to form a grid-connected power transmission (primary) system. The booster station monitoring device can collect various types of information from the power system. For example, the box-type substation and the wind turbine generator set are equipped with sensors and communication interfaces corresponding to preset monitoring indicators. The booster station monitoring device can receive signals or data packets carrying monitoring information of the power system through the sensor interface devices and communication interfaces. The monitoring information may specifically include remote control data, measurement waveform data, alarm / over-limit protection signals, and wind turbine monitoring data such as temperature, wind speed, rotational speed, voltage, and current, etc., carried by the corresponding monitoring information in the signals or data packets.

[0049] Time synchronization devices can be installed at the booster station of a wind farm. They can also be implemented by microcomputer devices with computing and instruction processing capabilities, such as workstations, servers, and industrial control computers. The booster station monitoring device can use the time synchronization device to determine its own time information and the accuracy and correctness of the reception / transmission times of monitoring information. This is suitable for clock status monitoring, clock time accuracy monitoring, and monitoring the correctness of time reception for time-synchronized devices such as protection, measurement and control, and fault recording. It ensures system clock uniformity and provides a foundation for multi-terminal monitoring and control of the wind turbine power system between the booster station monitoring device and the dispatching terminal.

[0050] The connection between the booster station monitoring device and the dispatching terminal transmits the monitoring information to the dispatching terminal, enabling simultaneous multi-terminal monitoring of the wind turbine power system of the wind farm at both the booster station and the dispatching terminal. The dispatching terminal can be a dispatching terminal corresponding to a power grid zone, implemented through a server, server cluster, or dispatch monitoring system. For example, the dispatching terminal can receive relevant remote control, relay protection fault information, and energy metering information through configured interface devices, and respond to the monitoring information by executing control operations on the wind turbine power system through interval devices. The booster station monitoring device synchronizes its time information with that of the dispatching terminal through a time synchronization device, enabling both the booster station monitoring device and the dispatching terminal to support the execution of control operations corresponding to the monitoring information. This provides synchronous support for multi-terminal selective control and provides a basis for avoiding inconsistent control operations for the same monitoring information due to delays and lags. The booster station monitoring device and dispatch terminal are also connected to the wind turbine power system through interval equipment. The interval equipment is used to select the booster station monitoring device or the dispatch terminal to perform control operations on the wind turbine power system. The interval equipment interlocks the booster station monitoring device and the dispatch terminal, which can realize multi-terminal selective control based on the aforementioned synchronous monitoring information and multi-terminal monitoring. Thus, even if the control of one end fails, the other end can continue to control the wind turbine power system, improving the reliability of the wind power monitoring system in low-temperature areas.

[0051] In one possible example, the substation monitoring device may include a bay-level measurement and control device and a station control-level monitoring device. The bay-level measurement and control device is connected to the wind turbine power system and is used to collect the monitoring information; the station control-level monitoring device is connected to the bay-level measurement and control device and is used to acquire the monitoring information and execute monitoring strategies corresponding to each monitoring piece of information; wherein, the bay-level measurement and control device is also connected to the dispatch terminal for synchronizing the monitoring information to the dispatch terminal. The aforementioned substation may include a secondary integrated protection room and a main control room. The bay-level measurement and control device may be located in the secondary integrated protection room, and the station control-level monitoring device may be located in the main control room, thereby facilitating the integration of protection, measurement, and control functions within the protection room. Simultaneously, the station control-level monitoring device with control functions is located in the same location area (substation) as the bay-level measurement and control device, eliminating the need to expose equipment and communication infrastructure to a low-temperature environment, further improving the reliability of the control, protection, and measurement functions. For example, as... Figure 2 The wind power monitoring system can be integrated into the substation, and the devices and corresponding communication infrastructure within the wind power monitoring system can be located in the secondary integrated protection room and the main control room, respectively. The secondary integrated protection room and the main control room can communicate with each other and share information to monitor various indicators of the wind turbine power system's power transmission to the grid and to synchronously monitor information to the dispatching terminal. Both the dispatching terminal and the wind power monitoring system can control the wind turbine power system.

[0052] The aforementioned substation monitoring device may further include: a control panel connected to the bay-level control device for displaying the monitoring information; the control panel is also connected to the bay equipment, and the substation control monitoring device is also connected to the bay equipment, for selecting one of the dispatch terminal, the substation control monitoring device, and the control panel to perform control operations on the wind turbine power system through the bay equipment; the control panel is also used to switch the control terminal of the bay equipment to the substation monitoring device or the dispatch terminal in response to command operations. This allows the bay equipment to be controlled from three locations: the dispatch terminal, the substation control monitoring device, and the control panel. The dispatch terminal, the substation control monitoring device, and the control panel can form an interlocking function, allowing only one location to control the equipment at any given time. The control panel may also be equipped with a remote dispatch terminal / local (substation-level) control switch and a trip / close button to support switching operations in emergency situations. This can be achieved through touch operation or by the control panel responding to command control.

[0053] In a further embodiment of this specification, control can be selectively applied between the booster station monitoring device and the dispatching terminal by setting a connection lock at one end and a disconnection mode at the other end within the same time zone (which may be referred to as an interlocking function). The booster station monitoring device controls the interval equipment to perform operations within a first time interval, and the interval equipment is used to disconnect its connection with the dispatching terminal within the first time interval; or the interval equipment is controlled by the dispatching terminal to perform operations within a second time interval, and the interval equipment is also used to disconnect its connection with the booster station monitoring device within the second time interval; the intersection of the second time interval and the first time interval is empty. Preferably, the interval equipment may include a circuit breaker and a disconnecting switch. The interval equipment may be an intelligent device containing a controller and may be located on the primary side of the booster station; for example, the disconnecting switch in the interval equipment may open or close in response to a control signal from the main control terminal, and the circuit breaker in the interval equipment may also trip or close in response to a control signal from the main control terminal. The substation monitoring device can include multiple monitoring hosts located in the main control room and control panels located in the main control room and / or secondary protection room as needed. The monitoring hosts or control panels can also serve as the main control terminal for the bay equipment. In other application scenarios, the monitoring hosts can be configured to have the highest privileges. When multiple terminals initiate control at the same time, the bay equipment uses the monitoring hosts as the main control terminal, maintaining a connection with the monitoring hosts while disconnecting from other terminals.

[0054] It should be further explained that, regarding the aforementioned interlocking function implementation, the connection between the substation monitoring device and the dispatching terminal and the bay equipment constitutes an interlocking structure. For example, in this interlocking structure, the bay equipment controller can select from the dispatching terminal, the station control layer monitoring device, and the monitoring and control panel to determine the current master control terminal for the bay equipment; or, in this interlocking structure, if one of the dispatching terminal, the station control layer monitoring device, or the monitoring and control panel initiates a control operation on the bay equipment, the bay equipment controller can return a signal carrying control status lock information to the other two; or, in this interlocking structure, if one of the dispatching terminal, the station control layer monitoring device, or the monitoring and control panel initiates a control operation on the bay equipment, the bay equipment triggers the disconnection of the switches on the connection lines with the other two. The specific method for implementing the interlocking function can be determined based on the specific equipment selection, hardware foundation, combined with testing and usage results.

[0055] For example, such as Figure 3 The interval equipment can include three sets of switches. The first set of switches K1, the second set of switches K2, and the third set of switches K3 are interlocked. That is, within the same time interval, only one set of switches can perform control operations on the lines PL1, PL2, and PL3 of each wind turbine generator in the wind turbine power system (this is only an example of the control principle and is not a limitation on the number of transmission lines and the transmission method; the settings and connections between each line can be considered according to actual needs, testing, and usage effects). The dispatch terminal can control the first set of switches K1, the station control layer monitoring device can control the second set of switches K2, and the monitoring and control panel can control the third set of switches K3. The monitoring and control panel can also choose whether to enable the first set of switches K1 to achieve three-terminal interlocking control when enabled, and two-terminal interlocking control when disabled. In a transmission scenario where the second set of switches K2 is in the fully closed state, if a fault occurs in line PL2, the station control layer monitoring device can control the switch in the second set of switches K2 that is on line PL2 to open, such as... Figure 4 The switch status shown is ignored, and subsequent control operations from the dispatching terminal or monitoring and control panel will be disregarded. However, if the station control layer monitoring device fails to control in a timely manner, the dispatching terminal can control the switches in the first group of switches K1 located on lines PL1 and PL3 to close (the switch on line PL2 to open) and simultaneously disconnect the second group of switches K2. Alternatively, the monitoring and control panel can control the switches in the third group of switches K3 located on lines PL1 and PL3 to close (the switch on line PL2 to open) and simultaneously disconnect the second group of switches K2. Besides this interlocking method, other interlocking methods, such as controllers or mechanical structures, can be designed according to the specific equipment type and actual needs.

[0056] In some possible implementations, the aforementioned time synchronization device can adopt a primary and backup time synchronization method, or it can adopt more time synchronization devices. It is preferable to have at least two physical devices with time synchronization service functions to ensure the time accuracy and real-time performance of the monitoring device, provide a basis for ensuring the effectiveness of multi-terminal interlocking control operations, and effectively avoid repeated control operations that respond to the same monitoring information due to delays.

[0057] In one possible example, the aforementioned time synchronization device may include a primary time synchronization host and a backup time synchronization host, each connected to the booster station monitoring device; both the primary and backup time synchronization hosts employ a dual-power supply mode. Each of the primary and backup time synchronization hosts is configured with both BeiDou satellite timing service and Global Positioning System (GPS) satellite timing service, with priority given to BeiDou satellite timing service.

[0058] The time synchronization device, interval equipment, and booster station monitoring device can be installed at the booster station. The equipment belonging to the interval layer in the booster station monitoring device (such as the aforementioned interval layer measurement and control device and other weak current switches) and the time synchronization device can all be installed in the secondary integrated protection room. This allows the time synchronization function to be integrated with the control, protection, and measurement and control functions in the same indoor area, improving system integration, avoiding the dispersion and exposure of control, protection, and measurement and control functions to the external environment, reducing the exposure of corresponding communication infrastructure, and eliminating the need for manual inspection in low-temperature external environments.

[0059] In some possible implementations, the wind turbine power system may include not only wind turbine generators and prefabricated substations (prefabricated transformers), but also a wind turbine monitoring system.

[0060] In one possible example, the wind turbine monitoring system can provide the substation monitoring device with monitoring information corresponding to multiple monitoring indicators. These indicators may include wind speed and direction at the wind farm, wind turbine operating status, transformer status, and the number of operating units. This monitoring information can be carried as a signal. The substation monitoring device can receive this signal and synchronize it to the dispatching terminal in real time. To facilitate integrated protection and reduce land costs, an energy storage area can also be set up in the area where the substation is located. The energy storage area system may include an energy storage system and an energy management system. The substation monitoring device can connect to the energy management system to receive operating signals from devices such as energy storage converters, unit step-up transformers, and energy storage batteries, and synchronize the monitoring information of their operating status to the dispatching terminal in real time, enabling the dispatching terminal to obtain the monitoring information corresponding to the energy storage system.

[0061] The aforementioned wind turbine monitoring system can be installed in the secondary integrated protection room; the booster station monitoring device is connected to the wind turbine monitoring system and is used to synchronize the monitoring information of the wind turbine generator set and the box-type substation to the dispatch terminal. Preferably, the wind turbine monitoring system can include a local monitoring system and a centralized monitoring system. The local monitoring system is integrated with the wind turbine generator set, and the centralized monitoring system is integrated with the wind power monitoring system. Furthermore, the local monitoring system and the wind turbine generator set can be located in the power generation area corresponding to the wind turbine generator set in the wind farm, and the centralized monitoring system and the wind power monitoring system can be located in the booster station.

[0062] Based on the above embodiments, this specification also provides a preferred wind power monitoring system, which can be located in a 110kV step-up substation. The step-up substation includes a secondary integrated protection room and a main control room. The step-up substation monitoring device for the 110kV system and the main transformer can include protection and measurement and control devices, safety automatic devices, network interfaces, and other equipment. Measurement and control panels can be assembled in the secondary integrated protection room and / or the main control room, and the equipment is arranged in the secondary integrated protection room. The 35kV system protection and measurement and control device is installed in the switch cabinet in the secondary integrated protection room.

[0063] The bay-level monitoring and control device can be synchronized with a time synchronization device, suitable for clock status monitoring, clock time accuracy monitoring, and monitoring the correctness of time received by time-synchronized equipment such as protection, monitoring and control, and fault recording. The bay-level monitoring and control device is centrally assembled into a monitoring and control panel in the secondary integrated protection room or installed locally in the switchgear. Each bay's equipment is relatively independent, interconnected only through the station's internal communication network, and can communicate with the station control layer equipment via fiber optic cable. The bay-level equipment can be configured with relay protection functions. The bay-level monitoring and control device can provide an interface for establishing a connection to the station's internal communication network. The monitoring information collected by the bay-level monitoring and control device can include current, voltage, active power, reactive power, temperature, DC, and various switching quantities. The bay-level monitoring and control device uploads / synchronizes monitoring information to the station control layer monitoring device and receives and executes control operations from the station control layer monitoring device or the dispatch terminal, thereby controlling the wind turbine power system.

[0064] The station control layer monitoring device may include two remote control units / workstations (centralized panel) and two monitoring hosts. One monitoring host can serve as the primary monitoring host, used for synchronous transmission and reception of monitoring information, while the other acts as a backup; or they may each be responsible for information services corresponding to different monitoring indicators. The station control layer monitoring device can connect to a time synchronization device or synchronize time via the remote control unit's serial port. The two monitoring hosts can synchronously share information with each remote control unit, and the remote control units can connect to the dispatch terminal. To improve transmission speed and increase reliability, shielded Ethernet cables, shielded twisted-pair cables, or optical fibers are used for network communication. The station's monitoring system network is configured with dual Ethernet connections. Shielded Ethernet cables or shielded twisted-pair cables are used for communication between the main control room and the secondary integrated protection room. For communication requiring passage through outdoor cable trenches, optical fibers are used.

[0065] The circuit breakers and disconnect switches in each bay can be controlled from three locations: the dispatch center, the station monitoring host, and the control panel. These are interlocked, and only one location can control them at a time. The control panel is equipped with a remote / local control switch and trip / close buttons. For interlocking functions, circuit breakers can be controlled via the monitoring host keyboard or by receiving commands from the dispatch center. In emergency situations, they can also be operated via control switches or trip / close buttons on the control / protection control panel or switchgear. Simultaneous operations can be specified to be controlled by the monitoring host.

[0066] The operating systems of the aforementioned hosts can be open source systems, such as real-time multitasking operating system software, support software, and monitoring application software, and can adopt a modular structure, possessing real-time performance, reliability, adaptability, scalability, and maintainability.

[0067] The wind power monitoring system described in this specification can also perform real-time data acquisition and processing. For example, it automatically and periodically collects the operating status and parameters of the substation, performs necessary preprocessing, and stores the data in a real-time database for real-time display, tabulation, printing, and various calculations. The wind power monitoring system can also perform limit monitoring and alarm processing; it monitors the operating parameters of various equipment in the substation in real time. When abnormalities occur, operating status changes, or parameters exceed set limits, alarm signals should be issued promptly, and real-time recording should be performed, including event sequence recording, fault alarm recording, parameter limit exceeding alarm and recording, electrical main equipment operation records, and accident replay.

[0068] In the embodiments described in this specification, the booster station monitoring device (not the wind turbine monitoring system or the field monitoring and diagnostic system) collects monitoring information of the wind turbine power system of the wind farm. The booster station monitoring device synchronizes the time through a time synchronization device to ensure the real-time nature and effectiveness of the monitoring information. At the same time, the booster station monitoring device also determines the time information of the monitoring information through the time synchronization device and synchronizes it with the time information of the dispatching terminal. The booster station monitoring device and the dispatching terminal selectively control the wind turbine power system through an interval device. Thus, based on the shared and synchronized monitoring information, multi-terminal monitoring and control of the wind turbine power system can be realized. When one end fails, the other end can still realize the power system control without waiting for manual inspection and restoration. This can provide reliability support for the application of wind power monitoring systems in low-temperature environments and provide a monitoring system foundation for ensuring the stable operation of the wind power generation power system.

[0069] This specification also provides wind farm integration systems that belong to the same inventive concept as the foregoing embodiments. Please refer to... Figure 5 It can include:

[0070] The wind farm includes a wind turbine power system and a wind power monitoring system connected to the wind turbine power system, wherein the wind power monitoring system is the aforementioned wind power monitoring system. Optionally, the wind turbine power system includes a wind turbine generator set, a prefabricated substation, and a wind turbine monitoring system; the wind turbine monitoring system includes a local monitoring system and a centralized monitoring system, wherein the local monitoring system is integrated with the wind turbine generator set, and the centralized monitoring system is integrated with the wind power monitoring system.

[0071] Optionally, a local monitoring system can be installed at the site of each wind turbine in the wind turbine generator set, enabling individual monitoring functions such as control, protection, and measurement for each turbine. A centralized monitoring system can be installed in the main control room of the substation, enabling remote measurement and remote signaling functions for the wind turbine generator set.

[0072] Optionally, the local monitoring system may include two control units. The first control unit is a monitoring unit, whose main function is to control the wind turbine generator set; the second control unit is a power supply unit, whose main function is to connect the wind turbine generator set to the power grid. Each control unit is located inside the tower of each wind turbine generator set and uses a touch-screen keyboard and display screen for human-machine interaction. Operators can use the keyboard to manually start, stop, start the motor, and rotate the wind turbine generator set clockwise. During operation, the first control unit continuously monitors the rotational speed of the wind turbine generator set to maintain the braking system at a safe level and can also adjust the power factor. A manual operation control box is located in the generator nacelle on the upper part of the wind turbine generator set tower. The control box is equipped with switches and buttons, such as: an automatic operation / locking switch, a yaw switch, an anemometer on / off switch, a start button, a motor start button, a brake chuck button, and a reset button.

[0073] Optionally, all wind turbine generators are connected to the turbine server cabinet in the secondary integrated protection room of the substation via fiber optic cables. The centralized monitoring system for the wind farm is located in the main control room of the substation. The aforementioned microcomputer device is used for centralized monitoring and management of all wind turbine generators. Duty personnel or operators in the main control room can complete monitoring and control tasks through a human-machine interface, thereby reducing manual inspection and troubleshooting work.

[0074] The embodiments in this specification help to avoid the exposure of the monitoring system in low-temperature environments, improve the overall integration of the monitoring system, further enhance the overall reliability of the system when applied in low-temperature areas, and further reduce manual inspection and troubleshooting.

[0075] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0076] In summary, the above description is merely a preferred embodiment of this specification and is not intended to limit the scope of protection of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

[0077] The apparatus, system, or module described in the above embodiments can be implemented by a computer chip or physical entity, or by a product with a certain function. A typical implementation device is a computer.

[0078] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A wind power monitoring system, characterized in that The wind power monitoring system comprises: a booster station monitoring device connected with a wind turbine power system of a wind farm for collecting monitoring information of the wind farm; a time synchronization device connected with the booster station monitoring device for synchronizing time information of the booster station monitoring device; the booster station monitoring device is further connected with a dispatching terminal for synchronizing the monitoring information to the dispatching terminal; the booster station monitoring device synchronizes time information with the dispatching terminal through the time synchronization device; the booster station monitoring device and the dispatching terminal are further connected with the wind turbine power system through an interval device for selecting the booster station monitoring device or the dispatching terminal to perform a control operation on the wind turbine power system through the interval device; the booster station monitoring device comprises: an interval layer measurement and control device connected with the wind turbine power system for collecting the monitoring information; a station control layer monitoring device connected with the interval layer measurement and control device for obtaining the monitoring information and performing a monitoring strategy corresponding to each monitoring information; wherein the interval layer measurement and control device is further connected with the dispatching terminal for synchronizing the monitoring information to the dispatching terminal; a measurement and control screen connected with the interval layer measurement and control device for presenting the monitoring information; the measurement and control screen is further connected with the interval device, and the station control layer monitoring device is further connected with the interval device for selecting one of the dispatching terminal, the station control layer monitoring device and the measurement and control screen to perform a control operation on the wind turbine power system through the interval device, and the measurement and control screen is provided with a remote / local control switch and a trip / close button; the measurement and control screen is further used for switching a control end of the interval device to the booster station monitoring device or the dispatching terminal in response to an instruction operation; the interval device comprises a circuit breaker and a disconnector, which are controlled at the dispatching terminal, a station monitoring host and a measurement and control screen, and have interlocking functions therebetween, and only one of them can be controlled at the same time; the interlocking functions are realized by controlling the circuit breaker through a keyboard of the monitoring host, receiving a command of the dispatching terminal to realize tripping or closing of the circuit breaker, or operating a control switch or a trip / close button on the control / protective measurement and control screen or a switch cabinet in an emergency state; the interval device comprises three groups of switches, i.e., a first group of switches K1, a second group of switches K2 and a third group of switches K3, which are interlocked with each other to enable only one group of switches to perform a control operation on lines PL1, PL2 and PL3 of each wind turbine generator set in the wind turbine power system at the same time interval; the dispatching terminal controls the first group of switches K1, the station control layer monitoring device controls the second group of switches K2, and the measurement and control screen controls the third group of switches K3.

2. The wind power monitoring system according to claim 1, characterized in that the time synchronization device comprises: a main time synchronization host and a backup time synchronization host connected with the booster station monitoring device respectively; the main time synchronization host and the backup time synchronization host both adopt a dual power supply mode.

3. The wind power monitoring system according to claim 1, wherein the time synchronization device, the interval device and the booster station monitoring device are arranged in a booster station. The booster station comprises a secondary comprehensive protection room and a main control room; the devices belonging to the interval layer in the booster station monitoring device and the time synchronization device are arranged in the secondary comprehensive protection room.

4. The wind power monitoring system according to claim 3, wherein the wind turbine power system comprises wind turbine generators, a box-type substation and a wind turbine monitoring system; the wind turbine monitoring system is arranged in the secondary comprehensive protection room; the booster station monitoring device is connected with the wind turbine monitoring system and is configured to synchronize monitoring information of the wind turbine generators and the box-type substation to the dispatching end.

5. The wind power monitoring system according to claim 1, wherein the booster station monitoring device is configured to control the interval devices to perform operations in a first time interval, and the interval devices are configured to disconnect the interval devices from the dispatching end in the first time interval; or the interval devices are configured to be controlled by the dispatching end to perform operations in a second time interval, and the interval devices are further configured to disconnect the interval devices from the booster station monitoring device in the second time interval; the intersection of the first time interval and the second time interval is empty. The wind turbine power system of the wind farm and a wind power monitoring system connected with the wind turbine power system, wherein the wind power monitoring system is any one of the wind power monitoring systems according to claims 1 to 5.

7. The wind farm integrated system according to claim 6, wherein the wind turbine power system comprises wind turbine generators, a box-type substation and a wind turbine monitoring system; the wind turbine monitoring system comprises a local monitoring system and a centralized monitoring system, the local monitoring system is integrated with the wind turbine generators, and the centralized monitoring system is integrated with the wind power monitoring system. ​ ​ ​ 6. A wind farm integration system characterized by, ​ ​ ​ ​ ​

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