Transformer substation starting device and method and generator response device

Abstract

The embodiment of the invention discloses a transformer substation starting device and method and a generator response device. The transformer substation starting device comprises an uninterruptible power supply (UPS) power supply module and a remote control system. The UPS power supply module is used for providing an uninterruptible power supply for the remote control system; the remote control system comprises a generator monitoring module, a generator remote starting module and a generator device information reset module. The generator monitoring module is used for transmitting generator state information to the dispatching center in real time; the generator remote starting module is used for sending a starting instruction to the generator starting circuit to start the generator when the generator state is not abnormal; and the generator device information reset module is used for sending a reset signal to the generator when the generator state is abnormal. Through the UPS power supply module and the remote control system, remote quick start and automatic access to the station system of the generator can be realized, and the time from power failure to power supply recovery is greatly shortened.

Description

Technical Field

[0001] The present application relates to the technical field of substations, and in particular to a substation starting device, method and generator response device. Background Art

[0002] In the power system, 220 kV substations play an important role, and their stable operation is of great significance to ensuring the safety and reliable power supply of the power grid. However, in actual operation, the problem of emergency power supply of substations has become increasingly prominent, especially in the face of emergencies such as AC power failure of the entire station, earthquakes and other natural disasters, which poses a severe challenge to the emergency power supply capacity of substations.

[0003] In the related art, some substations have been equipped with remote monitoring systems to monitor the operating parameters and environmental conditions of the equipment in the station. However, in actual applications, if a generator in the substation fails, the fault can only be determined based on the remote monitoring system.

[0004] Therefore, there is an urgent need for a starting device so that the generator of the substation can be started when the generator of the substation fails. Summary of the invention

[0005] In view of this, the present application provides a substation starting device, method and generator response device, which are used to solve the technical problem that a starting device is urgently needed in the prior art so as to start the generator of the substation when the generator of the substation fails. In order to achieve one or part or all of the above purposes or other purposes, the first aspect of the present application proposes a substation starting device, the substation starting device comprising: an uninterruptible power supply (UPS) power supply module and a remote control system;

[0006] The UPS power supply module is used to provide an uninterruptible power supply for the remote control system;

[0007] The remote control system includes: a generator monitoring module, a generator remote starting module and a generator device information reset module;

[0008] The generator monitoring module is used to transmit the generator status information to the dispatching center in real time to realize remote diagnosis of the generator status;

[0009] The generator remote start module is used to send a start instruction to the generator start circuit to start the generator when the generator is in normal condition;

[0010] The generator device information reset module is used to send a reset signal to the generator when the generator is in an abnormal state, restart the fault diagnosis program and the state self-check process, and eliminate the instantaneous fault.

[0011] Optionally, the substation starting device further comprises: a remote control hard pressure plate anti-misoperation device, wherein the remote control hard pressure plate anti-misoperation device is used to block misoperation and isolate irrelevant switch control circuits.

[0012] Optionally, the substation starting device also includes: specialized devices for synchronization check and no-voltage check, which are used to allow the generator to start when the power grid pressure loss meets a preset threshold, and to keep the starting circuit locked when the power grid voltage is abnormal.

[0013] Optionally, the generator starting circuit cooperates with the electromagnetic drive mechanism through relay logic control to drive the generator starting motor to operate, thereby driving the engine crankshaft to rotate and achieve ignition starting.

[0014] Optionally, the remote-controlled hard pressure plate anti-misoperation device includes: three remote-controlled hard pressure plates connected to a remote operation circuit.

[0015] Optionally, the generator monitoring module, the generator remote start module and the generator device information reset module are a switch combination;

[0016] The generator remote start module and the generator device information reset module are air switches.

[0017] Optionally, the generator monitoring module, the generator remote start module and the generator device information reset module are operated in sequence.

[0018] Optionally, the power of the generator is determined based on substation load characteristics and emergency power supply requirements.

[0019] In a second aspect, the present application further provides a substation startup method, which is applied to any substation startup device as described in the first aspect, and the substation startup method includes:

[0020] If the entire substation loses AC power, the remote control system in the substation starting device is powered by the UPS power supply module in the substation starting device;

[0021] The generator monitoring module remotely monitors the status of the generator based on the power provided by the UPS power supply module;

[0022] If the generator fails, a warning is triggered and a message is pushed;

[0023] If the generator is not faulty, the generator remote start module is started.

[0024] In a third aspect, the present application further provides a generator response device, comprising: a standardized mechanical interface, an electrical connector, and a substation starting device as described in any one of the first aspects.

[0025] Implementing the embodiments of the present application will have the following beneficial effects:

[0026] 1. The efficiency of emergency power supply is significantly improved:

[0027] By realizing remote rapid start-up of the generator and automatic access to the station system, the time from power outage to power restoration is greatly shortened. In a typical 220kV substation emergency scenario, compared with the traditional manual start-up method, the power restoration time is shortened from several hours to several minutes. This improvement effectively guarantees the continuous operation of key equipment such as the main transformer, and reduces the risk of equipment damage caused by power outages by more than 80%. This not only significantly enhances the reliability and stability of power supply, but also effectively reduces the losses caused by power outages and operation and maintenance costs.

[0028] 2. Remote monitoring and control are precisely enhanced:

[0029] A comprehensive remote monitoring system for generator status has been built, which covers a variety of operating parameters and fault signals, and integrates remote start, abnormal reset and anti-misoperation functions. This "one-stop" intelligent management and control solution enables the dispatcher's remote operation accuracy to reach more than 99%, and the probability of misoperation is almost zero. At the same time, the addition of fault warning and remote diagnosis functions has increased the recognition rate of potential faults to 95%. Maintenance personnel can plan maintenance strategies and prepare materials and tools in advance based on warning information, so as to complete fault repair in one on-site visit. This improvement not only improves the operation and maintenance efficiency by more than 60%, but also reduces the frequency and duration of on-site operations of personnel, further enhancing the flexibility and timeliness of emergency power supply, and ensuring the safe and stable operation of the power grid.

[0030] 3. Optimization of equipment universal resource utilization:

[0031] The design of the generator response device breaks the application limitations of power station equipment, enabling it to be flexibly deployed according to the emergency needs of the power grid. In cross-regional power grid emergency drills and actual operations, generators between substations of different voltage levels achieved smooth and efficient emergency sharing and collaborative operations. This improvement has expanded the emergency power supply coverage of the regional power grid by 50% and increased resource allocation efficiency by 40%. This not only strengthens the overall emergency response efficiency, but also improves the resilience and disaster resistance of the power system. Through the innovative equipment management model, the coordination and coordination level of power grid emergency resources has been improved, providing strong support for the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] in:

[0034] Figure 1 A schematic diagram of a substation starting device provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of another substation starting device provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of the working principle of the substation starting device provided in the embodiment of the present application;

[0037] Figure 4 A schematic diagram of the working method of the substation starting device provided in the embodiment of the present application;

[0038] Figure 5 A schematic diagram of the principle of a generator response device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] In the power system, 220kV substation plays an important role, and its stable operation is of great significance to ensure the safety and reliable power supply of the power grid. However, in actual operation, the problem of emergency power supply of substations has become increasingly prominent, especially in the face of emergencies such as AC power failure of the entire station, earthquakes and other natural disasters, which poses a severe challenge to the emergency power supply capacity of substations.

[0041] First, 220kV substations mostly use strong oil circulation transformers, which need to be continuously cooled to maintain normal operating temperature during operation. However, once the AC power of the entire station is lost, the main transformer coolers will all stop working, causing the transformer temperature to rise rapidly, and there is a risk of tripping due to overheating after 20 minutes or 60 minutes. This poses a serious threat to the operational safety of the substation.

[0042] Secondly, for substations in remote areas, due to their remote geographical location, it is difficult for operators to rush to the site to restore the power supply of the station system in a short time. This further exacerbates the difficulty of emergency power supply and makes the emergency power supply problem of remote substations more prominent.

[0043] In addition, Yunnan Province and other places are prone to earthquakes, and natural disasters such as earthquakes have put forward higher requirements on the emergency power supply capacity of substations. Severe earthquakes may cause the station power supply to be lost, making the substation face a serious power supply crisis. Therefore, it is increasingly important to ensure the reliability of substation emergency power supply during natural disasters such as earthquakes.

[0044] However, the existing generator operation has limitations. Although all 220kV substations in the Southern Power Grid have been equipped with generators to cope with emergencies, most of these generators cannot be started remotely and still require operators to enter the station to operate. This not only fails to meet the needs of rapid emergency power supply in emergencies, but also fails to achieve remote monitoring and control, resulting in slow emergency response and inefficiency.

[0045] At present, the emergency power supply solutions of most 220kV substations still rely on manually operated generators. When the station power supply is interrupted, the operator needs to rush to the substation site, complete a series of inspections and preparations before starting the generator, and manually start the generator. Afterwards, the generator output needs to be connected to the station AC system to supply power to key equipment. This process is cumbersome and time-consuming, and it is difficult to meet emergency power needs.

[0046] Although some substations have been equipped with remote monitoring systems to monitor the operating parameters and environmental conditions of equipment within the station, the remote start-up control function of the generator has not been effectively integrated into it. As a result, the response speed and efficiency of emergency power supply are still severely limited in emergencies.

[0047] Therefore, the main problems currently facing emergency power supply of 220kV substations include: timeliness of emergency power supply and remote monitoring and control.

[0048] Therefore, the embodiment of the present application proposes a substation starting device, including: a UPS power supply module and a remote control system, and the remote control system may include: a generator monitoring module, a generator remote starting module and a generator device information reset module, so as to form a collaborative remote control system. The remote control system realizes comprehensive remote monitoring of the generator status, including but not limited to real-time perception of various states such as low oil pressure and ground fault, and has accurate remote starting function and efficient abnormal alarm signal reset capability. Each switch has a clear division of labor and close cooperation in the remote control process, and jointly builds a seamless, intelligent and efficient emergency generator remote control mechanism. This mechanism is fundamentally different from the traditional decentralized or single-function remote control method, and provides an intelligent and integrated control center for substation emergency power supply guarantee. It greatly improves the timeliness, reliability and accuracy of emergency power supply, ensuring rapid response, stable power supply and precise operation and maintenance in complex and changeable power failure scenarios.

[0049] Moreover, the remote control system is powered by the UPS power supply module, which is closely related to and strengthens the overall emergency power supply architecture. The uninterruptible power supply characteristics of the UPS power supply module ensure the stability of control command transmission under extreme conditions such as power failure, and can work efficiently with the remote control system. The UPS power supply module can provide a solid power link support for the real-time feedback of remote monitoring data, the accurate issuance of start-up commands, and the reliable transmission of fault reset signals. It can effectively avoid the risk of control failure caused by power fluctuations or interruptions, significantly improve the overall anti-interference and fault tolerance capabilities of the system, and provide a solid "lifeline" guarantee for the continuity of power supply.

[0050] In addition, a remote control hard pressure plate anti-misoperation mechanism is set on the 0.4kV measurement and control screen, which is deeply embedded in the working logic of the remote control system. As a key line of defense for the accuracy and safety of remote control instructions, through the synergy of electrical isolation and logical interlocking, it can adaptively switch the protection state under normal remote operation and special test conditions, accurately shield the interference of misoperation, and ensure that remote start, monitoring, reset and other instructions can accurately reach the target equipment, effectively eliminating the risk of equipment failure and power supply interruption caused by misoperation, thereby realizing the organic unity of remote control accuracy and safety, providing a rock-solid security guarantee for the remote management of substation emergency power supply, and significantly improving the stability of power system operation and the reliability of operation and maintenance.

[0051] The following first introduces the substation starting device provided in the embodiment of the present application, see Figure 1 . Figure 1 This is a schematic diagram of a substation starting device provided in an embodiment of the present application. Figure 1As shown, the substation starting device includes: a UPS power supply module 101 and a remote control system 102 .

[0052] The UPS power supply module 101 can provide an uninterruptible power supply for the remote control system 102 .

[0053] Furthermore, the remote control system 102 may include: a generator monitoring module 1021 , a generator remote starting module 1022 , and a generator device information resetting module 1023 .

[0054] It should be noted that in the embodiment of the present application, it is necessary to select a power-matched generator based on the load characteristics of the substation and the emergency power supply requirements. Preferably, after precise load calculation and field testing, a 30 kilowatt (kW) generator can be configured in a 220kV substation. After cutting off non-critical loads (such as air conditioning) under remote control, the 30kW generator can fully meet the power requirements of the core equipment in the station (such as the main transformer cooler, measurement and control protection device), providing reliable emergency protection for power consumption in the station. This power adaptation strategy can effectively avoid damage to equipment due to underload or overload caused by insufficient power, thereby optimizing energy utilization efficiency and emergency power supply efficiency.

[0055] In view of the complexity of AC power access after the entire station loses AC power, and the characteristics of small loads of some remote control switches, the embodiment of the present application supplies power to the three key remote control modules, namely, the generator monitoring module 1021, the generator remote start module 1022, and the generator device information reset module 1023, through the UPS power supply module 101. The UPS power supply module 101 has functions such as instantaneous switching, voltage and frequency stabilization, filtering and purification, and can ensure "zero interruption" of the power supply of the remote control system, laying a solid foundation for the stable transmission and execution of remote control commands, and can significantly improve the reliability and response agility of the emergency power supply system.

[0056] Preferably, the generator monitoring module 1021, the generator remote start module 1022 and the generator device information reset module 1023 can be realized by controlling the switch combination, see Figure 2 . Figure 2 A schematic diagram of another substation starting device provided in an embodiment of the present application.

[0057] like Figure 2 As shown, the substation starting device can also include: a remote control hard pressure plate anti-misoperation device and a specialized device for checking synchronization and checking no-pressure functions.

[0058] The following description takes the generator monitoring module 1021, the generator remote start module 1022 and the generator device information reset module 1023 as an example of implementation through a control switch combination, but the embodiment of the present application does not impose specific restrictions on the implementation method of the generator monitoring module 1021, the generator remote start module 1022 and the generator device information reset module 1023.

[0059] like Figure 2 As shown, the generator monitoring module 1021 transmits the status information of the generator to the dispatch center in real time through the communication link in the closed state. With the help of various sensors such as oil temperature, oil pressure, voltage and current, the data collected by various sensors are analyzed through the pre-set controller. If the oil pressure is too low or the ground fault is found, an alarm will be triggered and the information will be pushed to the dispatcher or operator to realize remote "health monitoring", so as to provide data support for the startup decision, effectively prevent potential problems, and ensure the safety and efficiency of the generator startup.

[0060] After the dispatcher confirms that the generator is in normal condition and has no abnormal alarm, the generator remote start control switch can be closed through remote operation to send a start command to the generator start circuit. Through the synergy of relay logic control and electromagnetic drive mechanism, the generator start motor is driven to rotate, and then the engine crankshaft is driven to rotate to achieve ignition start. Therefore, the time delay between channel transmission and mechanical start can be greatly shortened, providing a fast energy supply for the station AC system, which can significantly improve the emergency response speed.

[0061] If an abnormal alarm occurs in the generator, the operator can reset it with one key based on the generator status reset control switch through remote operation. Accordingly, the remote operation can send a reset signal to the generator device information reset module 1023, restart the fault diagnosis program and the status self-check process, quickly identify and eliminate transient faults, and clear the alarm record at the same time. Therefore, it can create favorable conditions for the smooth start of subsequent generators, reduce on-site maintenance costs and manpower input, and improve the availability of equipment and the convenience of operation and maintenance.

[0062] Preferably, the remote control hard pressure plate anti-misoperation device is located at a key position of the 0.4kV measurement and control panel, and a safety barrier for remote operation is constructed by connecting three remote control hard pressure plates. When the entire station is remotely controlled, the hard pressure plate is in the exit state, which can effectively block the interference of misoperation; when conducting specific remote control tests, the hard pressure plate can be accurately put into use, limit the operating range and isolate irrelevant switch control circuits. Through the principles of electrical isolation and logical interlocking, and after strict electrical interlocking verification tests, it is ensured that the remote control instructions can accurately reach the target switch, effectively avoiding the risk of misoperation and ensuring the safe and stable operation of equipment and power grids.

[0063] Preferably, the specialized device for checking synchronization and no-voltage function can set the power grid synchronization and no-voltage detection function in the generator control module to no-voltage mode according to the actual working conditions of the power grid operation and the generator access. The power grid voltage status is monitored in real time through the voltage transformer. When the power grid voltage loss reaches the preset threshold, the control logic of the specialized device for checking synchronization and no-voltage function will unlock the generator's starting circuit, allowing the generator to start.

[0064] On the contrary, in the case of abnormal grid voltage or misoperation, specialized devices for checking synchronization and voltage-free functions keep the starting circuit in a locked state, which can effectively avoid the risks of current shock, equipment damage and grid fluctuations that may be caused by the asynchronous parallel connection of the generator and the station transformer, and ensure the smooth transition of the power system and reliable power supply.

[0065] Preferably, Figure 2 In the illustrated embodiment, the switch of the generator monitoring module 1021 may be closed first, then the switch of the generator remote starting module 1022 may be closed, and finally the switch of the generator device information resetting module 1023 may be closed.

[0066] The following is an explanation of the working principle of the substation starting device provided in the embodiment of the present application. Figure 3 . Figure 3 The schematic diagram of the working principle of the substation starting device provided in the embodiment of the present application is as follows. Figure 3 The working principle shown includes: when the AC power supply of the entire station fails, the UPS power supply module 101 is immediately started as a backup power supply to provide power support for the generator monitoring module 1021. The generator monitoring module 1021 uses the power provided by the UPS power supply module 101 to remotely monitor various key parameters of the generator in real time through the built-in communication interface. With the help of a reliable communication link (such as optical fiber, Ethernet, etc.), the generator monitoring module 1021 transmits the real-time collected generator status information (including but not limited to operating parameters, fault alarms, etc.) to the central dispatching center.

[0067] The controller built into the central dispatch center or the generator monitoring module 1021 collects detailed operating data of the generator through a variety of high-precision sensors such as oil temperature sensors, oil pressure sensors, voltage sensors, and current sensors, and performs real-time analysis and processing. The controller analyzes the collected data based on the preset algorithm and threshold to determine whether the generator has abnormal conditions such as low oil pressure and ground fault. If a generator fault is detected, the alarm mechanism will be triggered immediately, and the fault information will be sent to the dispatcher or operator in real time through various methods such as sound and light alarms, SMS notifications, and email push notifications, so that countermeasures can be taken quickly.

[0068] If the analysis confirms that the generator is fault-free and meets the starting conditions, the dispatcher or the central dispatch center can issue a start command through remote control to remotely start the generator. After the generator is successfully started, it will provide stable power support for the entire station system, ensuring the normal operation and stable performance of the station system.

[0069] If the generator has an abnormal alarm, the operator can remotely reset the generator status by one key. This operation will send a reset signal to the generator device information reset module 1023, restart the fault diagnosis program and status self-check process, quickly identify and eliminate instantaneous faults, and clear the alarm record.

[0070] The following is an introduction to the working method of the substation starting device, see Figure 4 . Figure 4 A schematic diagram of the working method of the substation starting device provided in the embodiment of the present application; Figure 4 As shown, the working method of the substation starting device includes the following steps:

[0071] If the entire substation loses AC power, the remote control system in the substation starting device is powered by the UPS power supply module in the substation starting device;

[0072] The generator monitoring module remotely monitors the status of the generator based on the power provided by the UPS power supply module;

[0073] If the generator fails, a warning is triggered and a message is pushed;

[0074] If the generator is not faulty, start the generator remote start module

[0075] S401: If the entire substation loses AC power, the remote control system in the substation starting device is powered by the UPS power supply module in the substation starting device.

[0076] Specifically, in the power supply system, the reliability of the AC power supply of the entire station is crucial. However, once the AC power supply of the entire station is lost, in order to ensure the continuous operation of the generator remote control system, the system will immediately start the UPS power supply module as an emergency backup power supply. The UPS power supply module can quickly switch when the main power supply is interrupted, providing stable power support for the remote control system, ensuring that the remote control system can operate normally.

[0077] The remote control system is a comprehensive system that integrates multiple key functions, mainly including the generator monitoring module, the generator remote start module and the generator device information reset module.

[0078] S402: The generator monitoring module remotely monitors the status of the generator based on the power provided by the UPS power supply module.

[0079] Specifically, the generator monitoring module relies on the power provided by the UPS power supply module and uses the built-in communication interface to achieve remote real-time tracking of the core parameters of the generator. The generator monitoring module transmits the instant generator status information (such as operating parameters and fault alarms) to the central control center through a stable communication channel such as optical fiber or Ethernet.

[0080] Whether it is the central control center or the embedded controller of the generator monitoring module, it can collect the operating details of the generator through a series of high-precision sensors such as oil temperature, oil pressure, voltage and current, and conduct data analysis immediately. According to the preset algorithm logic and critical values, the controller will deeply analyze the collected data to identify whether the generator has abnormal conditions such as low oil pressure and grounding fault.

[0081] S403: Determine whether to start the engine according to whether the generator fails.

[0082] After the generator data is acquired, it can be determined whether the generator is faulty based on the acquired data. If the generator is faulty, a warning can be triggered and a message can be pushed, but if the generator is not faulty, the generator remote start module can be activated to start the generator.

[0083] Specifically, the generator monitoring module plays a vital role in the entire power supply process. Once the module detects any signs of fault, it will immediately activate the alarm mechanism and quickly convey the specific information of the fault to the dispatcher or on-site operator through multiple communication methods, such as intuitive warnings from the sound and light alarm system, instant reminders from SMS services, and detailed notifications from emails.

[0084] If careful analysis confirms that the generator is not faulty and meets all startup conditions, the dispatcher or central control center can send a startup command to the generator through a secure remote control interface. After receiving the startup signal, the generator will start smoothly according to the preset program and provide stable and continuous power support for the entire station system.

[0085] In addition, if the generator gives an abnormal alarm during power supply, the operator can reset the generator status through remote operation without having to be on site. By sending a reset signal to the control module, the fault diagnosis program and the status self-check process can be triggered to restart, so that possible transient faults can be quickly identified and resolved, and the alarm record can be automatically cleared.

[0086] On the other hand, the present application also provides a generator response device, see Figure 5 . Figure 5 A schematic diagram of the principle of a generator response device provided in an embodiment of the present application. Figure 5 The generator response device shown includes: a standardized mechanical interface, an electrical connector, and any substation starting device provided in the embodiments of the present application.

[0087] The standardized mechanical interface is designed to seamlessly connect with various transportation tools and installation platforms, which can simplify the loading and unloading process of the generator and ensure the compatibility and versatility of the generator in different application scenarios. Through the standardized connection method, the generator can be quickly and stably installed in the designated location, ready for subsequent power supply.

[0088] Electrical connectors are used to connect the power output of the generator to the electrical equipment or the power grid. At the same time, electrical connectors also have the characteristics of plug-and-play. Users only need to simply insert the connector into the corresponding socket to achieve rapid power transmission. This design not only simplifies the operation process, but also greatly improves work efficiency.

[0089] Based on the above features, the generator response device can achieve fast response and plug-and-play functions. When the plan or demand is triggered, the generator response device can be quickly transported to the designated location and quickly installed and connected through standardized mechanical interfaces and electrical connectors. Once installed, the substation starter will immediately start and adjust the operating parameters of the generator to meet the current power demand. This efficient and flexible operation mode enables the generator system to perform well in various emergency or temporary power scenarios.

[0090] The generator response device adopts innovative modular, lightweight design concepts and quick connection technology to create a generator response device. The device has standardized mechanical interfaces and electrical connectors, and can be quickly transported, loaded and unloaded, and plug-and-play in different 110kV and 35kV substation emergency scenarios. In the regional power grid emergency linkage, according to the level, load characteristics and geographical distribution of the faulty substation, generator resources can be quickly deployed and the emergency power supply network can be flexibly established. This system not only expands the application scope of the equipment, but also significantly improves the overall emergency coordination capability and resource allocation efficiency of the regional power grid.

[0091] In summary, the embodiment of the present application constructs a unique remote control system consisting of a generator monitoring module charging switch, a remote start air switch and a device information reset air switch. This system has brought revolutionary changes to the management of emergency generators in 220kV substations, and has achieved a leap from single function to diversified function integration. It not only covers remote comprehensive monitoring (including multi-fault mode identification) and precise startup, but also introduces functions such as intelligent reset of abnormal signals. The switches work together and complement each other in function, establishing a stable remote control link for emergency power supply, effectively making up for the shortcomings of the fragmentation of traditional remote control functions, and significantly improving the autonomy and accuracy of emergency response.

[0092] A 30kW generator was precisely selected, and its power supply method was optimized to ensure an accurate match with the substation load characteristics and emergency power supply needs. After rigorous testing and verification, the remote load-carrying capacity and stability of the generator have been fully guaranteed, providing reliable power support for core equipment. At the same time, the power supply of the key remote control switch is led out by the UPS, and the high-reliability power quality assurance and seamless switching characteristics of the UPS are used to ensure the continuity and stability of the control command transmission. This strategy provides pure and continuous energy support for the remote control circuit under complex working conditions such as power failure, consolidates the startup foundation of the emergency power supply system, effectively reduces the risk of chain reactions that may be caused by power failures, and improves the reliability of the overall system.

[0093] A remote control hard pressure plate anti-misoperation system is set up on the 0.4kV measurement and control screen. This system is based on the principle of electrical isolation and logical interlocking, and is cleverly integrated into the remote control process of the entire station. In normal operation, it hides behind the scenes and does not interfere with the process, but it can accurately cut into protection under test conditions, and effectively blocks the conduction path of misoperation through the dual barriers of physical isolation and logical judgment. This mechanism ensures that remote control instructions can be "targeted" to the target switch. After a large number of on-site practical operations and fault simulation verification, the risk of power outages and equipment damage caused by misoperation is reduced to an extremely low level, significantly improving the safety of equipment operation and the stability of power grid operation.

[0094] The relevant functions in the generator control module are locked into the no-voltage mode, which deeply integrates the grid topology and operation logic. With voltage monitoring as the core, precise thresholds are preset to define the startup boundary, effectively avoiding the hazards of asynchronous parallel connection of generators. Through the analysis of big data on grid operation and field test verification, this setting completely eliminates the current shock and grid fluctuations that may be caused by incorrect parallel connection, ensuring that the transition process from power failure to generator access is smooth and safe, effectively maintaining the power quality and equipment life cycle of the grid, and building a solid safety line for the emergency power supply and grid connection link.

[0095] A detachable generator response device was designed, and a mobile emergency mode was constructed. By using modular and quick-release connection technology, the generator is given cross-station emergency mobility, and the dynamic allocation of emergency resources between substations of different voltage levels is realized. Under the regional power grid emergency system, generators are quickly deployed according to fault characteristics and resource distribution, and through multi-station collaborative drills and actual combat tests, the radius and response depth of emergency power supply are effectively expanded. This innovative design not only improves the equipment utilization rate by more than 50%, but also significantly enhances the overall emergency resilience and collaborative combat effectiveness of the power grid, and reshapes the allocation pattern of power grid emergency resources with flexible equipment configuration.

[0096] It should be noted that, in practical applications, the embodiments of the present application can also be implemented in the following ways:

[0097] 1. Remote control solution based on advanced PLC and communication module

[0098] The core of the solution is a high-performance programmable logic controller (PLC), which integrates multi-channel analog and digital input and output ports, high-speed counters, and multiple communication interfaces (such as Ethernet, RS485, etc.). Equipped with a professional signal acquisition unit, it can accurately capture various operating data of the generator, covering analog signals such as voltage, current, oil temperature, oil pressure, and digital signals such as switch status and fault alarm.

[0099] A stable communication channel is built with the host computer monitoring system using the communication module. Data transmission follows standardized industrial communication protocols such as ModbusTCP / IP and OPC UA, ensuring the efficiency, accuracy and reliability of data transmission. The host computer monitoring system is located in the dispatching center and has an intuitive visual interface that can display the status information of the generator in real time and issue remote control instructions.

[0100] A complex control logic program has been written inside the PLC to replace the original remote control switch function. For example, based on the collected oil temperature and oil pressure data, through logical judgment and numerical comparison, when the oil temperature exceeds the standard or the oil pressure drops to the preset threshold, the alarm signal will be triggered to upload; for the remote start function, after the host computer issues the start command, the PLC will follow the preset process to perform equipment self-check, motor drive start, generator excitation establishment and other steps in sequence, and feedback the status information of each stage in real time to ensure the accurate control of the start process; the reset function of the abnormal alarm signal is realized by clicking the reset button on the host computer, and the PLC sends the reset command to the generator control unit to complete the corresponding operation. The entire control logic is rigorous and highly automated, which can effectively respond to complex working conditions and achieve efficient remote control effects.

[0101] 2. Pressure monitoring solution based on micro-electromechanical system (MEMS) sensors and wireless communication

[0102] MEMS sensor arrays are deployed at key parts of the generator, including MEMS accelerometers, pressure sensors, temperature sensors, etc. Accelerometers are used to monitor the vibration state of the generator in real time to diagnose mechanical component imbalances, bearing wear and other faults; pressure sensors accurately measure changes in oil pressure and air pressure to monitor the pressure of the fuel system and cooling system; temperature sensors comprehensively monitor the temperature distribution of various parts of the generator to build a multi-parameter real-time monitoring system.

[0103] Through wireless communication technologies such as low-power Bluetooth, ZigBee or NB-IoT, a sensor network is built to aggregate the collected data to the wireless gateway. The wireless gateway communicates with the remote monitoring cloud platform through Ethernet or 4G / 5G network to achieve remote transmission and storage of data. The cloud platform has powerful big data analysis and processing capabilities, and uses machine learning algorithms to conduct in-depth mining and fault pattern identification of sensor data, to warn of potential fault hazards in advance, and to provide data support for remote operation and maintenance decisions.

[0104] The cloud platform is designed with a user-friendly remote operation interface that supports remote start, stop, and parameter adjustment operations through mobile terminals or PCs. For example, when the cloud platform analyzes and determines that the generator has the conditions for starting and receives a start command, it sends a start signal to the generator controller through the wireless gateway. During the startup process, each sensor feeds back data in real time to assist monitoring and adjustment, realizing efficient remote intelligent management and control functions. This solution improves the flexibility and scalability of the system, and is particularly suitable for distributed power stations or scenarios with high requirements for the convenience of equipment modification.

[0105] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0106] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A substation starting device, characterized in that: The substation startup device includes: an uninterruptible power supply UPS power supply module and a remote control system; The UPS power supply module is used to provide an uninterruptible power supply for the remote control system; The remote control system includes: a generator monitoring module, a generator remote starting module and a generator device information reset module; The generator monitoring module is used to transmit the generator status information to the dispatching center in real time to realize remote diagnosis of the generator status; The generator remote start module is used to send a start instruction to the generator start circuit to start the generator when the generator is in normal condition; The generator device information reset module is used to send a reset signal to the generator when the generator is in an abnormal state, restart the fault diagnosis program and the state self-check process, and eliminate the instantaneous fault.

2. The substation starting device according to claim 1, characterized in that: The substation starting device also includes: a remote control hard pressure plate anti-misoperation device, which is used to block misoperation and isolate irrelevant switch control circuits.

3. The substation starting device according to claim 1, characterized in that: The substation starting device also includes: a specialized device for checking synchronization and checking for no-voltage functions, which is used to allow the generator to be started when the power grid pressure loss meets a preset threshold, and is used to keep the starting circuit locked when the power grid voltage is abnormal.

4. The substation starting device according to claim 1, characterized in that: The generator starting circuit cooperates with the electromagnetic drive mechanism through relay logic control to drive the generator starting motor to operate, drive the engine crankshaft to rotate and realize ignition starting.

5. The substation starting device according to claim 2, characterized in that: The remote control hard pressure plate anti-misoperation device comprises: three remote control hard pressure plates connected to a remote operation circuit.

6. The substation starting device according to any one of claims 1 to 5, characterized in that: The generator monitoring module, the generator remote start module and the generator device information reset module are switch combinations; The generator remote start module and the generator device information reset module are air switches.

7. The substation starting device according to claim 6, characterized in that: The generator monitoring module, the generator remote starting module and the generator device information resetting module are operated in sequence.

8. The substation starting device according to any one of claims 1 to 5, characterized in that: The power of the generator is determined based on the load characteristics of the substation and the emergency power supply demand.

9. A substation startup method, characterized in that: Applied to the substation starting device according to any one of claims 1 to 8, the substation starting method comprises: If the entire substation loses AC power, the remote control system in the substation starting device is powered by the UPS power supply module in the substation starting device; The generator monitoring module in the substation starting device remotely monitors the status of the generator based on the power provided by the UPS power supply module; If the generator fails, a warning is triggered and a message is pushed; If the generator is not faulty, the generator remote starting module in the substation starting device is started.

10. A generator response device, characterized in that: include: A standardized mechanical interface, an electrical connector, and a substation starting device as claimed in any one of claims 1 to 8.

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