Intelligent monitoring alarm method for hydraulic power plant computer monitoring system

Abstract

The invention discloses an intelligent monitoring alarm method for a hydraulic power plant computer monitoring system, and the method comprises the steps: carrying out the point table configuration, so as to determine a measurement point which needs to be monitored and transmitted in the hydraulic power plant computer monitoring system, and distributing a unique point number for each measurement point; wherein the measuring points comprise four different types of measuring points, namely remote signaling, remote measuring, remote control and remote regulation; monitoring hydraulic power plant equipment in the hydraulic power plant computer monitoring system through four different types of measuring points, and analyzing and processing the hydraulic power plant equipment to obtain key monitoring data; and performing real-time judgment on the key monitoring data based on a preset alarm rule, and outputting alarm information when judging that the key monitoring data meets a preset alarm condition. According to the invention, new equipment and functions can be conveniently integrated, and a monitoring alarm strategy of stable operation can be maintained in various complex environments, so that continuous and effective monitoring of hydraulic power plant equipment is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of computer monitoring, and in particular to an intelligent monitoring panel alarm method for a computer monitoring system of a hydropower plant. Background Art

[0002] With the continuous progress of industrial level, hydropower plant equipment is also constantly updated, and more complex functions and improved automation levels have also put forward higher requirements for the reliability and stability of the monitoring system. However, the traditional monitoring method has some problems in monitoring and alarming, such as untimely alarms, high false alarm rates, unclear alarm information, etc., which may not meet the requirements of operation monitoring. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] The present invention proposes an intelligent monitoring and alarm method for a hydropower plant computer monitoring system. By developing a monitoring and alarm strategy with high reliability and scalability, it is possible to easily integrate new equipment and functions and maintain stable operation in various complex environments, thereby ensuring continuous and effective monitoring of hydropower plant equipment.

[0005] To achieve the above-mentioned purpose, the present invention proposes, on one hand, an intelligent monitoring panel alarm method of a hydropower plant computer monitoring system, comprising:

[0006] Performing point table configuration to determine the measuring points that need to be monitored and transmitted in the hydropower plant computer monitoring system, and assigning a unique point number to each measuring point; wherein the measuring points include four different types of measuring points: remote signaling, remote measurement, remote control, and remote adjustment;

[0007] The hydropower plant equipment in the hydropower plant computer monitoring system is monitored through four different measurement points, and analyzed and processed to obtain key monitoring data;

[0008] The key monitoring data is judged in real time based on preset alarm rules, and alarm information is output when it is judged that the key monitoring data meets the preset alarm conditions.

[0009] The intelligent monitoring panel alarm method of the hydropower plant computer monitoring system according to the embodiment of the present invention may also have the following additional technical features:

[0010] In one embodiment of the present invention, the method further includes:

[0011] Output monitoring and control screen according to the point table configuration, and display the system monitoring status, alarm information and historical records through the monitoring and control screen;

[0012] Set alarm rules and adjust system parameters through the background of the monitoring system.

[0013] In one embodiment of the present invention, a telemetry signal dead zone is set, and a corresponding line crossing alarm value is set at the telemetry alarm limit value.

[0014] In one embodiment of the present invention, control exclusivity is selected, the control exclusivity is selected, the default selection object is unique, and remote control is performed with multiple control points; when performing the remote control closing operation of the circuit breaker, it is prioritized to check whether the status of the relevant equipment meets the closing conditions, and the closing operation is allowed only when all conditions are met.

[0015] In one embodiment of the present invention, remote adjustment is performed by associating the corresponding remote adjustment return value in the relevant telemetry point. After the remote adjustment operation is performed, the telemetry function is automatically started to obtain the relevant operating parameters of the equipment, and the telemetry return value is compared and analyzed with the expected remote adjustment target; if a difference is found, an alarm or prompt message is issued; at the same time, the telemetry return value is checked in real time through the monitoring system to determine the operating status of the equipment and the remote adjustment effect.

[0016] In one embodiment of the present invention, different types of signals are selected as needed and integrated, combined with various calculation formulas, and an editing window is entered to filter the signals that need to be calculated through a searcher; when performing calculations, operators such as addition, subtraction, multiplication, division, and or non-operation are used, and the analysis and processing of telesignaling and telemetry data are realized by defining calculation formulas.

[0017] In one embodiment of the present invention, when configuring the alarm library, the alarm types that need to be monitored are determined, the alarms are associated with the corresponding devices or systems to locate the problem location information when the alarm occurs, and the storage method and retention period of the alarm history records are set to perform fault analysis and trend prediction.

[0018] In one embodiment of the present invention, when configuring the alarm level, it is divided according to the actual situation, and a corresponding processing flow and priority are set for each level; the alarm group configuration manages different types of alarms in groups.

[0019] In one embodiment of the present invention, the alarm group configuration manages different types of alarms in groups, including:

[0020] Group the alarms of the same device into one alarm group, or group the alarms of the same nature into one alarm group. Click a specific alarm group to define the alarm group: define the details in the time action name, event level, and alarm processing method.

[0021] The intelligent monitoring and alarm method of the hydropower plant computer monitoring system according to the embodiment of the present invention realizes efficient and accurate monitoring and alarm functions through real-time monitoring and data analysis of hydropower plant equipment.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 is a flow chart of an intelligent monitoring panel alarm method of a hydropower plant computer monitoring system according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of performing logical judgment on the actual load and calculated output of the unit and the calculated vibration zone of the unit head through a functional module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] The following describes the intelligent monitoring panel alarm method of a hydropower plant computer monitoring system according to an embodiment of the present invention with reference to the accompanying drawings.

[0029] Figure 1 FIG. 1 is a flow chart of an intelligent monitoring panel alarm method of a hydropower plant computer monitoring system according to an embodiment of the present invention. Figure 1 As shown, the method includes:

[0030] S1, configure the point table to determine the measuring points that need to be monitored and transmitted in the computer monitoring system of the hydropower plant, and assign a unique point number to each measuring point; wherein the measuring points include four different types of measuring points: remote signaling, remote measurement, remote control and remote adjustment;

[0031] S2, monitors the hydropower plant equipment in the hydropower plant computer monitoring system through four different measurement points, and analyzes and processes to obtain key monitoring data;

[0032] S3, performing real-time judgment on the key monitoring data based on preset alarm rules, and outputting alarm information when it is judged that the key monitoring data meets the preset alarm conditions.

[0033] It can be known that the hydropower plant computer monitoring system of the present invention mainly monitors and controls the hydropower plant equipment through four different signal measurement points: remote signaling, remote measurement, remote control, and remote adjustment, and analyzes and processes the data to extract key information.

[0034] In one embodiment of the present invention, telesignaling is mainly used to monitor the status information of the equipment, and to control the different states of the signal and the alarm information by adding limiting conditions. As shown in the following figure, in the permission flag field, the signal can be marked with different states such as negation, alarm permission, and accident recall. By setting the telesignaling permission flag, some unnecessary or erroneous telesignaling signals can be excluded, and it is determined which telesignaling signals need further action processing, etc., to optimize the utilization of system resources. When a telesignaling signal arrives, the signal is first received and verified, and then the corresponding action is triggered according to the content of the telesignaling signal. For example, when a telesignaling signal of equipment failure is received, the system can issue an alarm, start a fault handling program, etc., to ensure accurate monitoring of the equipment status and timely response.

[0035] In one embodiment of the present invention, telemetry is used to collect various operating parameters of the equipment, which usually change and refresh quickly and need to be continuously monitored, so the frequency and accuracy requirements are relatively high. The sampling period of telemetry needs to be set manually. If it is set to 15 minutes, a point will be stored every 15 minutes, which can be searched in the corresponding historical curve. The time series storage accuracy requires higher accuracy, and it is set to store a point every 1 second. Through continuous dynamic monitoring, the trend of parameter changes can be observed and the future status of the equipment can be analyzed;

[0036] The coefficient in the telemetry signal is a proportional factor used to convert the collected raw physical quantity into an actual meaningful value. This coefficient is usually determined based on the characteristics of the sensor, the measurement range, and the design requirements of the system. For example, if a voltage sensor outputs a signal of 0-5V, and the actual voltage range to be measured is 0-1000V, then a coefficient is needed to convert the sensor output signal into an actual voltage value. Assume that this coefficient is 200, that is, every 1V output by the sensor represents an actual voltage of 200V. In this way, when the sensor output is 3V, the actual voltage converted by the coefficient is 600V.

[0037] The telemetry signal dead zone is set within a certain range, and the telemetry signal is not updated or reported even if the actual physical quantity changes. By setting the dead zone, some unimportant small changes can be filtered out, and only when the changes exceed the dead zone range will they be transmitted and processed. In actual systems, due to factors such as noise and interference, the measured values ​​may have some small fluctuations. If there is no dead zone, these small fluctuations may cause frequent alarms or misoperations. Setting the dead zone can avoid this situation.

[0038] Set the corresponding off-line alarm value at the telemetry alarm limit. By setting reasonable alarm limits, an alarm can be quickly issued when abnormal equipment operating parameters appear, reminding the operating personnel to take timely measures to avoid further expansion of the fault.

[0039] In one embodiment of the present invention, remote control exclusivity means that only one specific operation source is allowed to remotely operate the device at the same time to prevent multiple operation sources from issuing different instructions at the same time, causing confusion in the device state. In the rightmost control exclusivity of the remote control, you can select the exclusivity of the control. The default selection object is unique, so that the monitoring system can be remotely controlled by multiple control points.

[0040] Rule-based configuration means formulating a series of rules to restrict and guide remote control operations based on the operation requirements and safety specifications of the hydropower plant, including requirements on operation conditions, sequence, authority, etc. For example, when performing remote closing operations on circuit breakers, it is necessary to first check whether the status of related equipment meets the closing conditions, such as line fault-free, grounding switch disconnected, isolating switch position, etc. Closing operations are allowed only when all conditions are met.

[0041] These two settings ensure that remote control operations comply with the operating logic and safety requirements of the hydropower plant, reduce operational risks, improve operational efficiency and accuracy, and reduce errors and failures caused by illegal operations.

[0042] In one embodiment of the present invention, the remote adjustment point needs to be associated with the corresponding remote adjustment return value in the relevant telemetry point, and the measurement point on the screen only needs to be associated with the corresponding telemetry return value to perform remote adjustment. After the remote adjustment operation is performed, the control system will automatically start the telemetry function, obtain the relevant operating parameters of the equipment, and compare and analyze the telemetry return value with the expected remote adjustment target. If a difference is found, the system will issue an alarm or prompt information so that the operator can take timely measures. At the same time, the operator can also view the telemetry return value in real time through the monitoring system to understand the operating status of the equipment and the remote adjustment effect. At the same time, the remote adjustment can set upper and lower limits and the step size of the remote adjustment, and the upper and lower limits of the remote adjustment can also be associated with the corresponding dynamically changing telemetry.

[0043] In one embodiment of the present invention, the monitoring data is judged in real time based on the preset alarm rules. When the monitoring data meets the alarm conditions, the alarm is triggered. The alarm rules can be customized and adjusted according to actual needs to adapt to different application scenarios.

[0044] Specifically, in actual production work, the signals reported by the monitoring system are not sent directly, but are obtained through logical operation processing. Different types of signals can be selected and integrated according to needs. This function needs to be combined with various calculation formulas and function blocks. By entering the editing window and using the searcher, you can filter the signals that need to be calculated. These signals can come from different data sources, such as remote signaling and telemetry data collected by sensors, equipment status signals, etc.

[0045] When performing calculations, operators such as addition, subtraction, multiplication, division, and or non-operation can be used. By reasonably defining the calculation formula, in-depth analysis and processing of telemetering data can be achieved. Take the judgment condition of the unit being in the operable area as an example.

[0046] like Figure 2 The figure shows that the actual load of the unit, the calculated output of the water head and the calculated vibration zone of the unit water head are logically judged through a functional module. When the input high alarm is enabled, the high alarm function is valid, and when the input low alarm is enabled, the low alarm function is valid. When the input signal exceeds the high alarm value H and the high alarm function is valid, the function block will issue a higher alarm signal HAlm. When the input signal returns to a value lower than the high alarm value, the HAlm high alarm signal will not be eliminated immediately. Only when the input signal is ≤H-DBH, the alarm signal will be eliminated; when the input signal is lower than the low alarm value L and the low alarm function is valid, the function block will issue a lower alarm signal LAlm. However, when the input signal returns to a value higher than the low alarm value, the alarm signal LAlm will not be eliminated immediately. Only when the input signal is ≥L+DBL, the alarm signal will be eliminated. When either the higher limit alarm signal HAlm or the lower limit alarm signal LAlm is 1, the over-limit alarm output Alm is 1, otherwise it is 0; the output result is inverted and "AND"ed with the power generation state of the unit. If the conditions are met at the same time, the output is 1, and it is determined that the unit is in the operable area.

[0047] In one embodiment of the present invention, the alarm library is a place to store various alarm information. When configuring the alarm library, first determine the alarm type that needs to be monitored, such as equipment failure, parameter exceeding the limit, communication interruption, etc., and provide a clear and accurate description for the alarm type so that the operator can quickly understand the meaning of the alarm. Then associate the alarm with the corresponding equipment or system so that the problem can be quickly located when an alarm occurs, and set the storage method and retention period of the alarm history record to facilitate fault analysis and trend prediction.

[0048] The configuration of alarm levels can help operators distinguish alarms of different severity so that they can take appropriate measures. Generally speaking, alarm levels can be divided into several levels. When configuring alarm levels, it is necessary to make reasonable divisions based on actual conditions and set corresponding processing procedures and priorities for each level.

[0049] The alarm group configuration can group different types of alarms so that operators can view and handle related alarms more conveniently. For example, alarms of the same device can be grouped into one alarm group, or alarms of the same nature can be grouped into one alarm group. Click on a specific alarm group to define the alarm group, and define the details in the time action name, event level, and alarm handling method.

[0050] Furthermore, the main purpose of the 104 point table configuration is to determine the data points such as telesignaling and telemetry that need to be monitored and transmitted in the system. By configuring the point table reasonably, each data point is assigned a unique point number (KKS code) to facilitate system identification and management. Create a new txt file with the following content format:

[0051] [RTU]

[0052] Address,RTU name

[0053] [remote letter]

[0054] BASE=XXXX

[0055] Address, description name, measurement point type (operation alarm / accident alarm / position signal / telemeter), whether to invert (0,1), whether to have five protection points (0,1), logical name, whether to allow alarm (0,1), primary device type, primary device name (path), KKS

[0056] [telemetry]

[0057] BASE=XXXX

[0058] Address, description name, measurement point type (current / voltage / active power / reactive power / cycle / temperature / power factor / pressure / flow / storage capacity / water level / amplitude / amplitude / state telemetry), unit, coefficient, correction value, residual, dead zone, logical name, high 1 alarm limit, upper range limit, lower range limit, low 1 alarm limit, upper complex limit dead zone, lower complex limit dead zone, primary device type, primary device name (path), data type (float / short / ushort / long / ulong), KKS, high 3 alarm limit, high 2 alarm limit, low 2 alarm limit, low 3 alarm limit

[0059] [remote control]

[0060] BASE=XXXX

[0061] Address, description name, control type (status remote control / value remote control / sequential control), control mode (1: direct control / 2: selective control / 3: enhanced direct control / 4: enhanced selective control), control number, logical name, primary device type, primary device name (path), KKS

[0062] [Remote Pulse]

[0063] BASE=XXXX

[0064] Address, description name, measurement point type (input power / output power), unit, coefficient, offset, ratio, full scale value, logical name, primary device type, primary device name (path), KKS

[0065] Furthermore, a monitoring screen is made according to the point table configuration, which is convenient for users to view the system monitoring status, alarm information, historical records, etc. Alarm rule settings, system parameter adjustments, etc. can be performed through the monitoring system background.

[0066] Take AGVC operation 32 in the template as an example to introduce it. Drag AGVC operation 32 in the template into the screen. After filling in the actual information, a remote control dialog box will pop up when clicking the case on the screen. The input and exit buttons can be remotely controlled when the control conditions are met. Clicking "Not Allowed" will pop up another screen in which you can see which conditions are not met.

[0067] The intelligent monitoring and alarm method of the hydropower plant computer monitoring system according to the embodiment of the present invention can conveniently integrate new equipment and functions and maintain a stable monitoring and alarm strategy in various complex environments to ensure continuous and effective monitoring of hydropower plant equipment.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. An intelligent monitoring and alarm method for a hydropower plant computer monitoring system, characterized in that: include: Performing point table configuration to determine the measuring points that need to be monitored and transmitted in the hydropower plant computer monitoring system, and assigning a unique point number to each measuring point; wherein the measuring points include four different types of measuring points: remote signaling, remote measurement, remote control, and remote adjustment; The hydropower plant equipment in the hydropower plant computer monitoring system is monitored through four different measurement points, and analyzed and processed to obtain key monitoring data; The key monitoring data is judged in real time based on preset alarm rules, and alarm information is output when it is judged that the key monitoring data meets the preset alarm conditions.

2. The method according to claim 1, characterized in that: The method further comprises: Output monitoring and control screen according to the point table configuration, and display the system monitoring status, alarm information and historical records through the monitoring and control screen; Set alarm rules and adjust system parameters through the background of the monitoring system.

3. The method according to claim 1, characterized in that Set the telemetry signal dead zone and set the corresponding line crossing alarm value in the telemetry alarm limit place.

4. The method according to claim 1, characterized in that: Control exclusivity, select the exclusivity of control, the default selection object is unique, and remote control is performed with multiple control points; when performing remote control closing operation of the circuit breaker, priority is given to checking whether the status of related equipment meets the closing conditions. Only when all conditions are met, the closing operation is allowed.

5. The method according to claim 1, characterized in that: In the relevant telemetry points, the corresponding remote adjustment return value is associated to perform remote adjustment. After the remote adjustment operation, the telemetry function is automatically started to obtain the relevant operating parameters of the equipment, and the telemetry return value is compared and analyzed with the expected remote adjustment target. If a difference is found, an alarm or prompt message is issued. At the same time, the telemetry return value is checked in real time through the monitoring system to determine the operating status of the equipment and the remote adjustment effect.

6. The method according to claim 1, characterized in that Integrate the different types of signals selected according to the needs, combine with various calculation formulas, enter the editing window and use the searcher to filter the signals that need to be calculated; when performing calculations, use operators such as addition, subtraction, multiplication, division, and or non-operators, and define calculation formulas to realize the analysis and processing of telesignaling and telemetering data.

7. The method according to claim 1, characterized in that When configuring the alarm library, determine the alarm types that need to be monitored, associate the alarms with the corresponding devices or systems to locate the problem location information when an alarm occurs, and set the storage method and retention period of the alarm history records to perform fault analysis and trend prediction.

8. The method according to claim 1, characterized in that When configuring the alarm level, divide it according to the actual situation and set the corresponding processing flow and priority for each level; the alarm group configuration manages different types of alarms in groups.

9. The method according to claim 8, characterized in that Alarm group configuration manages different types of alarms in groups, including: Group the alarms of the same device into one alarm group, or group the alarms of the same nature into one alarm group. Click a specific alarm group to define the alarm group: define the details in the time action name, event level, and alarm processing method.

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