Earthquake emergency scheduling method and system for diversion type hydropower station

Abstract

The invention discloses an earthquake emergency scheduling method and system for a diversion type hydropower station, and relates to the technical field of hydropower station scheduling control, and the method comprises the steps: obtaining multi-source safety data in real time through a data collection unit, and generating an alarm; constructing a fault tree based on the alarm, calculating an event occurrence probability, expanding an event tree path, and evaluating a risk degree in combination with an accident consequence; dividing each event path into a risk area and a risk level according to the assessment risk degree, and executing an emergency scheduling strategy for different risk levels; and after each scheduling is implemented, the security alarm is collected again, and the fault tree model is updated, so that continuous dynamic response is realized. According to the method, multi-source data of earthquakes, units, dams, communication and the like are collected in real time, potential risks can be comprehensively identified, probability calculation and accident consequence analysis are combined, and quantitative assessment and grading of the risks are achieved. The scientificity and the accuracy of emergency decision making are improved, and the adaptability and the robustness of emergency scheduling are improved through continuous feedback and dynamic optimization.

Description

Technical Field

[0001] This invention relates to the field of hydropower station dispatching and control technology, and in particular to a method and system for earthquake emergency dispatching of a diversion-type hydropower station. Background Technology

[0002] A hydropower station mainly consists of two parts: a dam (reservoir) and a powerhouse. Its function is to convert the potential energy of water into electrical energy, providing clean and renewable energy. Diversion-type hydropower stations separate the powerhouse and dam, using a diversion channel to bring water from the reservoir to the powerhouse. With the continuous maturation of hydropower production technology and the further improvement of management systems, more and more hydropower stations are developing towards unmanned urban hydropower, adopting remote centralized control (referred to as a control center).

[0003] Hydropower stations are typically built in river valleys or areas with significant elevation differences, with the southwest region being the most prone to such disasters. In recent years, the southwest region has experienced frequent earthquakes. When an earthquake occurs, it is often accompanied by secondary disasters such as communication disruptions and landslides, posing a dual challenge to power station personnel: escaping while protecting equipment. After a communication disruption, the control center cannot remotely monitor the power station equipment. If an earthquake causes traffic disruptions or occurs at night when no one is on duty, personnel cannot arrive on the first attempt, and the reservoir gates and generator units lose control, making the accident more likely to escalate in unpredictable directions. For example: if a power line trips due to an earthquake, causing generators to shed load, but the reservoir gates are not controlled and fail to open in time, there is a risk of dam overflow; if upstream water flow decreases and generators do not reduce load or shut down in time, it will lower the reservoir water level and may even collapse the water diversion tunnel; if downstream river channels are blocked or even form landslide dams due to an earthquake, and the gates are not closed in time, continued water release will lead to downstream flooding and escalation of the accident; in diversion-type hydropower stations, the plant and dam area are far apart, and although there are personnel on site, the loss of communication and improper coordination between the two sides can lead to the escalation of the accident. All of the above situations will further exacerbate the damage to the power station. Currently, the emergency response plan for hydropower stations in the event of an earthquake mainly focuses on the emergency evacuation of personnel, and there is no specific solution for the disruption of dispatch and communication in the reservoir area and generator units caused by the earthquake. Summary of the Invention

[0004] In view of the aforementioned existing problems, the present invention is proposed.

[0005] Therefore, this invention provides an earthquake emergency dispatch method for diversion-type hydropower stations to solve the problems of insufficient data utilization, low level of quantitative risk assessment, and poor dynamics of dispatch response in existing hydropower station earthquake emergency dispatch technologies.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: In a first aspect, the present invention provides an earthquake emergency dispatching method for a water diversion hydropower station, which includes acquiring multi-source safety data in real time through a data acquisition unit and generating alarms; Based on the alarms, a fault tree is constructed and the probability of event occurrence is calculated. The event tree path is expanded, and the risk level is assessed in conjunction with the consequences of the accident. Based on the assessed risk level, each event path is divided into risk areas and risk levels, and emergency dispatch strategies are implemented for different risk levels. After each scheduling operation, security alarms are recollected and the fault tree model is updated to achieve continuous dynamic response.

[0007] As a preferred embodiment of the earthquake emergency dispatching method for a water diversion hydropower station described in this invention, the step of acquiring multi-source safety data and generating alarms includes: deploying multi-channel data acquisition terminals near the dam and in the unit building, and connecting them to multi-source sensors; integrating and aggregating earthquake, unit, dam, and communication information to form a complete emergency data stream; processing the original time-series signals and transmitting them to the control unit through a secure communication protocol; Define alarm entry set Including alarm types timestamp Strength value Sort by time and add all newly received alarm entries to the set. ,right By timestamp Sort in ascending order to obtain the sequence. Initialize an empty list Set time jitter threshold Merge duplicate alarms of the same type within a short period of time, and iterate through the sorted sequence. ; Obtain the alarm sequence after deduplication and filtering out jitter noise. ; For each alarm in the sequence Obtain its original clock source identifier According to the pre-calibrated offset Perform the correction, using Replace the original timestamp, then press after correction. right Reorder the alarms and output the alarm sequence synchronously.

[0008] As a preferred embodiment of the earthquake emergency dispatching method for diversion-type hydropower stations described in this invention, the construction of the fault tree includes: collecting a list of leaf nodes and forming a set of all the basic events at the lowest level of the fault tree. The basic events are leaf nodes with no child events; assign a probability to each leaf node. The probability of its occurrence is set based on historical statistics. ; Bottom-up synthesis computation involves iteratively processing intermediate nodes in the fault tree that have both upstream sub-events and are dependent on downstream parent events, according to traversal rules. Calculate the intermediate nodes from bottom to top according to the hierarchical depth, first calculating the intermediate nodes closest to the leaf nodes, then calculating the higher-level nodes, for each intermediate node... Read the sub-event collection ; Read the gate type, calculate the logic gate output, and for an AND type node, if an intermediate node N uses an AND logic connection... If there are multiple sub-events, then read this first. The calculated probabilities of each sub-event are multiplied sequentially to obtain the node. The overall probability; If the intermediate node Use or logical connection Each sub-event has a probability. Convert this to a probability that it will not occur. Multiply the probabilities of non-occurrence sequentially to calculate the node. The probability of occurrence; If node Requirements, at least If a sub-event occurs, enumerate all events that satisfy the selection criteria. A combination of sub-events; for each combination of sub-events, sum the product results of all combinations to obtain the node. The final probability; after each calculation, the obtained probability value is stored back to the corresponding node; Once all intermediate nodes have completed their calculations and the root node of the fault tree is reached, the probabilities of the sub-events are read and synthesized to obtain the probability of occurrence of the top-level event in the fault tree. .

[0009] As a preferred embodiment of the earthquake emergency dispatching method for diversion-type hydropower stations described in this invention, the step of forming a risk matrix based on accident consequences includes path extraction, for each top event... Traverse the fault tree downwards from the root node to extract the set of all possible accident evolution paths. Each path It consists of a series of action nodes; Top-down event probability of occurrence , for path Assign Severity Calculate the risk level based on a predefined consequence level. .

[0010] As a preferred embodiment of the earthquake emergency dispatching method for diversion-type hydropower stations described in this invention, the step of dividing risk areas and risk levels includes, based on the input... Set of all paths Perform risk level calculations to obtain respective risk level lists; perform risk level mapping and set two thresholds. , Risk level Mapped to three levels: green, Yellow indicates acceptable risk; Red indicates the need for early warning and preparation; This indicates that immediate action is required; each path Mark it according to the corresponding risk level; Clustering partitioning methods are used based on the input. The system automatically divides risk areas and assigns corresponding risk levels to them for use in generating emergency dispatch strategies.

[0011] As a preferred embodiment of the earthquake emergency dispatching method for a water diversion hydropower station described in this invention, the implementation of the emergency dispatching strategy includes determining the risk level based on the earthquake magnitude and distance; if... If so, emergency dispatch will be initiated and communication status will be checked; Initiate emergency dispatch, construct a fault tree for hydropower station dispatch, and calculate the probability of the top event occurring in hydropower station dispatch. Initiate the audible and visual alarm process for the hydropower station; Combined with the severity level, a preliminary risk assessment is generated, and communication with the dam monitoring system is examined; If communication is interrupted, start the timer, re-execute the event tree probability synthesis, and assign a high severity to paths that exceed the time limit; calculate path risk. ,like If the indicator is red, the process will proceed directly to the control unit to execute the hydropower station protection procedure without waiting for the timer to finish; if the timer reaches its limit and... If the color remains yellow or higher, the hydropower station protection process will begin. If the timer has not expired, but other high-risk paths are found through the event tree, the event tree will turn red and immediately enter the hydropower station protection process.

[0012] As a preferred embodiment of the earthquake emergency dispatching method for a water diversion hydropower station described in this invention, the method for achieving continuous dynamic response includes: if communication is normal, performing water level stabilization and load control, calculating the inflow rate, calculating the power of each unit according to segmentation rules, and updating the current water level; Add load adjustment-induced water level imbalance and excessive unit vibration as basic events to the fault tree; recalculate the top event probability and path risk; if If the risk level is yellow, switch to the hydropower station protection process; if the risk level is yellow, implement water level stabilization and load control, and issue an early warning; if the risk level continues to fall back to green, maintain the current load. The hydropower station protection process involves tripping the line circuit breaker, issuing an immediate shutdown command to all generating units, triggering the highest-level audible and visual alarm, recording the emergency shutdown log, and generating a complete accident path report. Triggering conditions include exceeding time limits and being on a red path in the event tree for risk assessment.

[0013] Secondly, the present invention provides an earthquake emergency dispatch system for a water diversion hydropower station, including an input acquisition unit for acquiring earthquake data, unit data, dam data, and communication data; The data preprocessing unit is used to preprocess the collected information, convert its format, and transmit it to the control unit. The control unit is used to execute information according to the emergency dispatch process and send output signals to the output unit; The output unit is used to control the monitoring system and audible and visual alarm system of each unit.

[0014] Thirdly, the present invention provides a computer device including a memory and a processor, wherein the memory stores a computer program, wherein when the computer program is executed by the processor, it implements any step of the earthquake emergency dispatching method for a diversion-type hydropower station as described in the first aspect of the present invention.

[0015] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program is executed by a processor, it implements any step of the earthquake emergency dispatching method for a diversion-type hydropower station as described in the first aspect of the present invention.

[0016] The beneficial effects of this invention are as follows: By collecting multi-source data such as earthquake, generator, dam, and communication data in real time, potential risks can be comprehensively identified, avoiding omissions caused by judging based on a single signal. Based on fault tree and event tree models, combined with probability calculation and accident consequence analysis, quantitative assessment and classification of risks can be achieved, improving the scientific nature and accuracy of emergency decision-making. Different levels of dispatching strategies are automatically triggered according to the risk level, avoiding over-handling while ensuring that high-risk events are controlled in a timely and effective manner. After each dispatch, data is re-collected and the model is updated, achieving continuous feedback and dynamic optimization, improving the adaptability and robustness of emergency dispatching. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart of the earthquake emergency dispatching method for diversion-type hydropower stations. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0022] Reference Figure 1 As an embodiment of the present invention, this embodiment provides an earthquake emergency dispatching method for a diversion-type hydropower station, comprising the following steps: S1: Acquire multi-source security data in real time through the data acquisition unit and generate alarms.

[0023] The process of acquiring multi-source safety data and generating alarms includes deploying multi-channel data acquisition terminals near the dam and in the unit building, and connecting to multi-source sensors; integrating and aggregating earthquake, unit, dam, and communication information to form a complete emergency data stream; processing the original time-series signals and transmitting them to the control unit through a secure communication protocol.

[0024] The alarm data structure is defined, defining the set of alarm entries, expressed by the formula: in: Indicates the alarm type (e.g., "seismic acceleration exceeds limit", "dam body crack displacement"); Represents a timestamp (UTC or GPS time accurate to milliseconds); Indicates the intensity value (optional, such as acceleration value, displacement, packet loss rate, etc.).

[0025] Sort by time and add all newly received alarm entries to the set. ,right By timestamp Sort in ascending order to obtain the sequence formula: Jitter window filtering and deduplication, setting a time jitter threshold (like This is used to merge duplicate alarms of the same type within a short period of time.

[0026] Initialize an empty list Traverse the sorted sequence. Processing result. This is the alarm sequence after deduplication and filtering out jitter noise.

[0027] Time base alignment is required if different data sources use different clocks; clock skew correction must be performed. For each alarm Obtain its original clock source identifier According to the pre-calibrated offset (Unit: ms) Perform the correction, expressed by the formula: Among them, using Replace the original timestamp. Correct and then re-check. according to Reorder to ensure global consistency.

[0028] All alarm information from various sensors and monitoring devices is aggregated into a single set, with each alarm including its type, original timestamp, and intensity value. The system then sorts these alarms from earliest to latest timestamp to ensure correct processing order. After sorting, duplicate alarms of the same type with time intervals within the jitter threshold are merged: the later alarm is retained, and its intensity is updated to the highest value among all duplicate alarms, thus filtering out noise caused by transmission or measurement jitter.

[0029] The output synchronous alarm sequence, after sorting, jitter filtering, deduplication, and time base correction, is expressed by the following formula: The corrected alarm sequence As input for subsequent fault tree / event tree evaluation.

[0030] It should be noted that since different data sources use different clocks, the timestamps of each alarm need to be clock offset corrected to be unified to the same reference time base, and then sorted again to ensure global timing consistency. Finally, the system outputs a list of alarms that is both unique and corrected, arranged in true time order, as input for the subsequent security assessment model.

[0031] S2: Construct a fault tree based on the alarm and calculate the probability of the event occurrence, expand the event tree path, and assess the risk level in conjunction with the consequences of the accident.

[0032] The construction of the fault tree includes collecting a list of leaf nodes and assembling a set of all the basic events at the lowest level of the fault tree. The basic events are leaf nodes with no child events; assign a probability to each leaf node. The probability of its occurrence is set based on historical statistics. .

[0033] Bottom-up synthesis computation involves iteratively processing intermediate nodes in the fault tree that have both upstream sub-events and are dependent on downstream parent events, according to traversal rules.

[0034] Collect the list of leaf nodes, and form a set of all the lowest-level basic events (leaf nodes with no child events) of the fault tree. The formula is as follows: Assign leaf node probabilities for each basic event. The probability of its occurrence is set based on historical statistics or expert experience, and the formula is expressed as: If precise data is lacking for some events, life tests can be used to fill the gaps or a conservative upper limit can be set.

[0035] Bottom-up composite computation calculates the probability of occurrence for each intermediate node in the fault tree (i.e., a node that has both upstream sub-events and is dependent on downstream parent events) according to the following rules, up to the root node.

[0036] Traverse the hierarchy, from bottom to top according to the hierarchy depth (i.e., first calculate the intermediate nodes closest to the leaf nodes, then calculate the higher-level nodes), for each intermediate node Read its child event set, expressed by the formula: Read the gate type, gate(N) AND or OR.

[0037] Calculate the output of a logic gate. If gate(N) = AND, the formula is as follows: This represents the probability that all sub-events occur simultaneously. If gate(N) = OR, the formula is expressed as: This represents the probability of at least one sub-event occurring.

[0038] For special logic gates, such as complex gates with k-out-of-n (at least k sub-events occurring), binomial distribution or inclusion-exclusion principle can be used. Store intermediate results, calculate... Write back to node Attributes so that their parent nodes can use them later. The root node is output probabilistically when traversing to the root node (top event). At that time, the final probability calculation is performed according to the above logic gate types, thus obtaining... .

[0039] If the fault tree contains multiple disjoint root nodes, they can be calculated separately and output as multiple sets of top events.

[0040] For a tree with M nodes, traversing it from bottom to top once has a time complexity of approximately [missing information]. .

[0041] If the probability of a sub-event is extremely small or extremely large, multiplication or consecutive multiplication can be used to find the probability. When dealing with underflow / overflow, it is necessary to consider accumulating the logarithmic field before exponentiation. Calculate the intermediate nodes from bottom to top according to the hierarchical depth, first calculating the intermediate nodes closest to the leaf nodes, then calculating the higher-level nodes, for each intermediate node... Read the sub-event collection .

[0042] Read the gate type, calculate the logic gate output, and for an AND type node, if an intermediate node N uses an AND logic connection... If there are multiple sub-events, then read this first. The calculated probabilities of each sub-event are multiplied sequentially to obtain the node. The overall probability.

[0043] If the intermediate node Use or logical connection Each sub-event has a probability. Convert this to a probability that it will not occur. Multiply the probabilities of non-occurrence sequentially to calculate the node. The probability of occurrence.

[0044] If node Requirements, at least If a sub-event occurs, enumerate all events that satisfy the selection criteria. A combination of sub-events; for each combination of sub-events, sum the product results of all combinations to obtain the node. The final probability; after each calculation, the obtained probability value is stored back to the corresponding node.

[0045] After completing the probability of the top event of the fault tree After the calculation, we need to score the risk of the event tree branch path corresponding to each top event so that we can sort and respond in order of risk level.

[0046] Path generation, for each fault tree top event Starting from its root node in the event tree, recursively traverse along all possible branches to generate a set of paths: Each path This represents a series of subsequent emergency actions or state transition nodes, such as in, root node The following For the first on this path An event or action node.

[0047] Severity scoring was performed. For each path Assign a "severity of consequences" value. This reflects the potential damage to systems, people, or the environment after the path has evolved.

[0048] Severity can be assessed based on expert ratings and historical incident classifications, such as: minor impact. Moderate impact Severe impact. If the path contains multiple consequences, the maximum value or a weighted average can be taken.

[0049] Path risk calculation for each path Calculate its overall risk level according to the following formula. : in, Indicates the probability of the top event occurring; This indicates the severity score of the path.

[0050] Once all intermediate nodes have completed their calculations and the root node of the fault tree is reached, the probabilities of the sub-events are read and synthesized to obtain the probability of occurrence of the top-level event in the fault tree. .

[0051] Risk level mapping maps continuous risk values. Convert to discrete risk levels for hierarchical decision-making logic: Set two thresholds. , ,satisfy For each Comparison: If If so, the level = green (low risk). Then the level is yellow (medium risk). If so, the level is red (high risk).

[0052] All paths according to Sort by size from largest to smallest, and prioritize high-risk paths.

[0053] Within the same risk level, it can be further divided into... or severity Size subdivision priority.

[0054] It should be noted that the following steps are involved: path generation: enumerating all possible evolution paths under the top event; severity scoring: setting a quantitative consequence level for each path; risk calculation: obtaining a comprehensive risk value using "probability × severity"; risk mapping: classifying risk values ​​into three levels: green, yellow, and red, based on preset thresholds; and priority sorting: ensuring that the most dangerous scenarios are responded to first.

[0055] S3: Based on the assessed risk level, divide each event path into risk areas and risk levels, and execute emergency dispatch strategies for different risk levels.

[0056] Furthermore, consequence indicators are defined, introducing two-dimensional quantitative indicators for accident consequences: economic loss. Personnel safety .

[0057] Normalization transformation, , Normalize to the [0,1] interval respectively: Calculate the overall severity for each path. The severity of the overall consequences : in, For economic and security weights (e.g.) =0.6, =0.4).

[0058] Risk matrix construction using a probability-severity grid. The horizontal axis represents the probability of the top event. or path risk probability = The vertical axis represents severity. .

[0059] Define boundaries and select probability thresholds , (For example =0.1, =0.3), select severity threshold , (For example =0.3, =0.7).

[0060] The process of forming a risk matrix by combining accident consequences includes path extraction, for each top event... Traverse the fault tree downwards from the root node to extract the set of all possible accident evolution paths. Each path It consists of a series of action nodes.

[0061] Top-down event probability of occurrence , for path Assign Severity Calculate the risk level based on a predefined consequence level. .

[0062] The division of risk areas and risk levels includes, based on the input... Set of all paths Perform risk level calculations to obtain respective risk level lists; perform risk level mapping and set two thresholds. , Risk level Mapped to three levels: green, Yellow indicates acceptable risk; Red indicates the need for early warning and preparation; This indicates that immediate action is required; each path Mark it as the corresponding risk level.

[0063] Clustering partitioning methods are used based on the input. The system automatically divides risk areas and assigns corresponding risk levels to them for use in generating emergency dispatch strategies.

[0064] It should be noted that this system and method are primarily designed for diversion-type hydropower stations, capable of handling various extreme situations such as communication disruptions with the central control center during earthquakes, communication disruptions between the power plant and the dam, and line tripping. The overall dispatching strategy prioritizes stable power generation and water level control to prevent further escalation of accidents. Key features are as follows: The process initiation is primarily based on the communication status with the central control center. If the communication status is normal, the central control center will handle the scheduling, and the process will not be initiated. After the process is initiated, the main focus is on assessing the communication status between the power plant and the dam. If communication is normal, the unit load and gate opening will be automatically adjusted based on the inflow rate. If communication is interrupted, the power generation time will be determined based on the power plant's generating capacity and reservoir water level during the last communication, delaying the gate opening and water release as much as possible. This method effectively prevents the escalation of downstream accidents due to direct water release, maximizing time for human intervention; it also avoids equipment damage accidents caused by the loss of control over the units and gates.

[0065] S4: After each scheduling operation, security alarms are collected again and the fault tree model is updated to achieve continuous dynamic response.

[0066] The implementation of the emergency dispatch strategy includes determining the risk level based on the earthquake magnitude and distance, if... If so, emergency dispatch will be initiated and communication status will be checked.

[0067] Initiate emergency dispatch, construct a fault tree for hydropower station dispatch, and calculate the probability of the top event occurring in hydropower station dispatch. Initiate the audible and visual alarm process for the hydropower station; Combined with the severity level, a preliminary risk assessment is generated, and communication with the dam monitoring system is detected.

[0068] If communication is interrupted, start the timer, re-execute the event tree probability synthesis, and assign a high severity to paths that exceed the time limit; calculate path risk. ,like If the indicator is red, the process will proceed directly to the control unit to execute the hydropower station protection procedure without waiting for the timer to finish; if the timer reaches its limit and... If the level remains yellow or higher, the hydropower station protection process will begin.

[0069] If the timer has not expired, but other high-risk paths are found through the event tree, the event tree will turn red and immediately enter the hydropower station protection process.

[0070] The implementation of continuous dynamic response includes, if communication is normal, performing water level stabilization and load control, calculating the incoming water flow, calculating the power of each unit according to segmentation rules, and updating the current water level.

[0071] Add load adjustment-induced water level imbalance and excessive unit vibration as basic events to the fault tree; recalculate the top event probability and path risk; if If the risk level is yellow, switch to the hydropower station protection process; if the risk level is yellow, implement water level stabilization and load control, and issue an early warning; if the risk level continues to fall back to green, maintain the current load.

[0072] The system calculates the generating load based on the inflow rate, stabilizes the reservoir water level, and automatically controls the load of each generating unit. If communication with the dam monitoring system is interrupted during this process, the system enters the hydropower station dispatching process.

[0073] The n generating units meet the required flow rates as follows: ~ The inflow rate is The unit for incoming water is m³ / s, and the load of each unit is directly controlled according to the amount of incoming water flow.

[0074] Then the power of Unit 1 is expressed as: The power formula for Unit 1 is then expressed as: The power formula for Unit 2 is expressed as: And so on, if the incoming water exceeds the full operating flow of all generating units... ~ When all units are operating at full capacity, the excess flow is handled by the emergency dispatch system at the gate.

[0075] The hydropower station protection process involves tripping the line circuit breaker, issuing an immediate shutdown command to all generating units, triggering the highest-level audible and visual alarm, recording the emergency shutdown log, and generating a complete accident path report. Triggering conditions include exceeding time limits and being on a red path in the event tree for risk assessment.

[0076] It should be noted that if the outgoing line circuit breaker trips at any time, the hydropower station operation will be immediately stopped. During startup, if the reset button is pressed at any time, all processes will be stopped, and the input signal detection and judgment will resume. This system comprehensively considers extreme situations such as line-side switch tripping and high reservoir water levels, and is used to interrupt process execution as a last resort to protect the generating units and dam. Simultaneously, reset buttons located in each control room and important passageways allow for the cancellation of processes at any time, enabling manual intervention and takeover of dispatch. For other types of hydropower stations, such as those where the powerhouse and dam are located in the same location downstream of the dam, this system can still be used as a reference, requiring only one integrated system, with input signal acquisition and output control units configured according to the actual situation.

[0077] This embodiment also provides an earthquake emergency dispatch system for a diversion-type hydropower station, including an input acquisition unit for acquiring earthquake data, generator data, dam data, and communication data.

[0078] The data preprocessing unit is used to preprocess the collected information, convert its format, and transmit it to the control unit.

[0079] The control unit is used to execute information according to the emergency dispatch process and send output signals to the output unit.

[0080] The output unit is used to control the monitoring system and audible and visual alarm system of each unit.

[0081] This embodiment also provides a computer device applicable to the earthquake emergency dispatching method for a diversion-type hydropower station, comprising: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement the earthquake emergency dispatching method for a diversion-type hydropower station as proposed in the above embodiment.

[0082] The computer device can be a terminal, comprising a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0083] This embodiment also provides a storage medium storing a computer program, which, when executed by a processor, implements the earthquake emergency dispatch method for a diversion-type hydropower station as proposed in the above embodiments. The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0084] In summary, this invention achieves its goal by: acquiring multi-source security data in real time through a data acquisition unit and generating alarms; Based on the alarms, a fault tree is constructed and the probability of event occurrence is calculated. The event tree path is expanded, and the risk level is assessed in conjunction with the accident consequences. According to the assessed risk level, each event path is divided into risk areas and risk levels. For different risk levels, emergency dispatch strategies are executed. After each dispatch is implemented, safety alarms are collected again and the fault tree model is updated to achieve continuous dynamic response.

[0085] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for earthquake emergency dispatching of a run-of-river hydropower station, characterized in that: This includes acquiring multi-source security data in real time through a data acquisition unit and generating alarms; Based on the alarms, a fault tree is constructed and the probability of event occurrence is calculated. The event tree path is expanded, and the risk level is assessed in conjunction with the consequences of the accident. Based on the assessed risk level, each event path is divided into risk areas and risk levels, and emergency dispatch strategies are implemented for different risk levels. After each scheduling operation, security alarms are recollected and the fault tree model is updated to achieve continuous dynamic response.

2. The seismic emergency dispatch method for a hydraulic power station with diversion type, as claimed in claim 1, wherein: The acquisition of multi-source safety data and generation of alarms includes deploying multi-channel data acquisition terminals near the dam and in the unit building, and connecting to multi-source sensors; integrating and aggregating earthquake, unit, dam and communication information to form a complete emergency data stream; processing the original time-series signals and transmitting them to the control unit through a secure communication protocol; Definition of alarm entry set , including alarm type , timestamp , intensity value ; sort by time, add all newly received alarm entries to the set , according to , ascending order of timestamp , get sequence ; initialize empty list , set time jitter threshold , merge repeated alarms of the same type within a short time, traverse the sorted sequence ; Obtaining de-duplicated and jitter noise filtered alarm sequences ; For each alarm in the sequence Obtain its original clock source identifier According to the pre-calibrated offset Perform the correction, using Replace the original timestamp, then press after correction. right Reorder the alarms and output the alarm sequence synchronously.

3. The earthquake emergency dispatch method for a diversion-type hydropower station as described in claim 2, characterized in that: The construction of the fault tree includes collecting a list of leaf nodes and assembling a set of all the basic events at the lowest level of the fault tree. The basic events are leaf nodes with no child events; assign a probability to each leaf node. The probability of its occurrence is set based on historical statistics. ; Bottom-up synthesis computation involves iteratively processing intermediate nodes in the fault tree that have both upstream sub-events and are dependent on downstream parent events, according to traversal rules. Calculate the intermediate nodes from bottom to top according to the hierarchical depth, first calculating the intermediate nodes closest to the leaf nodes, then calculating the higher-level nodes, for each intermediate node... Read the sub-event collection ; Read the gate type, calculate the logic gate output, and for an AND type node, if an intermediate node N uses an AND logic connection... If there are multiple sub-events, then read this first. The calculated probabilities of each sub-event are multiplied sequentially to obtain the node. The overall probability; If the intermediate node Use or logical connection Each sub-event has a probability. Convert this to a probability that it will not occur. Multiply the probabilities of non-occurrence sequentially to calculate the node. The probability of occurrence; If node Requirements, at least If a sub-event occurs, enumerate all events that satisfy the selection criteria. A combination of sub-events; for each combination of sub-events, sum the product results of all combinations to obtain the node. The final probability; after each calculation, the obtained probability value is stored back to the corresponding node; Once all intermediate nodes have completed their calculations and the root node of the fault tree is reached, the probabilities of the sub-events are read and synthesized to obtain the probability of occurrence of the top-level event in the fault tree. .

4. The earthquake emergency dispatch method for a diversion-type hydropower station as described in claim 3, characterized in that: The process of forming a risk matrix by combining accident consequences includes path extraction, for each top event... Traverse the fault tree downwards from the root node to extract the set of all possible accident evolution paths. Each path It consists of a series of action nodes; Top-down event probability of occurrence , for path Assign Severity Calculate the risk level based on a predefined consequence level. .

5. The earthquake emergency dispatch method for a diversion-type hydropower station as described in claim 4, characterized in that: The division of risk areas and risk levels includes, based on the input... Set of all paths Perform risk level calculations to obtain respective risk level lists; Perform risk level mapping and set two thresholds. , Risk level Mapped to three levels: green, Yellow indicates acceptable risk; Red indicates the need for early warning and preparation; This indicates that immediate action is required; each path Mark it according to the corresponding risk level; Clustering partitioning methods are used based on the input. The system automatically divides risk areas and assigns corresponding risk levels to them for use in generating emergency dispatch strategies.

6. The earthquake emergency dispatch method for a diversion-type hydropower station as described in claim 5, characterized in that: The implementation of the emergency dispatch strategy includes determining the risk level based on the earthquake magnitude and distance, if... If so, emergency dispatch will be initiated and communication status will be checked; Initiate emergency dispatch, construct a fault tree for hydropower station dispatch, and calculate the probability of the top event occurring in hydropower station dispatch. Initiate the audible and visual alarm process for the hydropower station; Combined with the severity level, a preliminary risk assessment is generated, and communication with the dam monitoring system is examined; If communication is interrupted, start the timer, re-execute the event tree probability synthesis, and assign a high severity to paths that exceed the time limit; calculate path risk. ,like If the indicator is red, the process will proceed directly to the control unit to execute the hydropower station protection procedure without waiting for the timer to finish; if the timer reaches its limit and... If the color remains yellow or higher, the hydropower station protection process will begin. If the timer has not expired, but other high-risk paths are found through the event tree, the event tree will turn red and immediately enter the hydropower station protection process.

7. The earthquake emergency dispatch method for a diversion-type hydropower station as described in claim 6, characterized in that: The implementation of continuous dynamic response includes, if communication is normal, performing water level stabilization and load control, calculating the inflow rate, calculating the power of each unit according to the segmentation rules, and updating the current water level; Add load adjustment-induced water level imbalance and excessive unit vibration as basic events to the fault tree; recalculate the top event probability and path risk; if If the risk level is yellow, switch to the hydropower station protection process; if the risk level is yellow, implement water level stabilization and load control, and issue an early warning; if the risk level continues to fall back to green, maintain the current load. The hydropower station protection process involves tripping the line circuit breaker, issuing an immediate shutdown command to all generating units, triggering the highest-level audible and visual alarm, recording the emergency shutdown log, and generating a complete accident path report. Triggering conditions include exceeding time limits and being on a red path in the event tree for risk assessment.

8. An earthquake emergency dispatch system for a diversion-type hydropower station, based on the earthquake emergency dispatch method for a diversion-type hydropower station as described in any one of claims 1 to 7, characterized in that: It includes an input acquisition unit for acquiring seismic data, generator data, dam data, and communication data; The data preprocessing unit is used to preprocess the collected information, convert its format, and transmit it to the control unit. The control unit is used to execute information according to the emergency dispatch process and send output signals to the output unit; The output unit is used to control the monitoring system and audible and visual alarm system of each unit.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, it implements the steps of the earthquake emergency dispatching method for a water diversion hydropower station as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the steps of the earthquake emergency dispatching method for diversion-type hydropower stations as described in any one of claims 1 to 7.

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