Power plant monitoring system

Abstract

The utility model relates to a power plant monitoring system. The system comprises a plurality of telecontrol hosts, a switch, a grid-connected monitoring terminal and a server, each telecontrol host is connected with the switch, the switch is connected with the input end of the grid-connected monitoring terminal, and the output end of the grid-connected monitoring terminal is connected with the server; the telecontrol hosts correspond to different power plant units, the telecontrol hosts are used for collecting equipment monitoring data of the corresponding power plant units, and the grid-connected monitoring terminal is used for determining power plant monitoring data according to the equipment monitoring data collected by the telecontrol hosts and sending the power plant monitoring data to the telecontrol hosts. And the server is used for analyzing the power plant monitoring data to obtain a performance assessment result of the power plant.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of power plant unit performance examination, in particular to a power plant monitoring system. BACKGROUND

[0002] The relationship between the dispatching master station and the power plant is a mutually dependent and cooperative relationship, in which the power plant provides necessary data and executes the commands of the dispatching master station, while the dispatching master station uses the data to make decisions and guide the operation of the power plant, to jointly ensure the safety and stability of the power system.

[0003] In the prior art, the power grid dispatching master station has constructed a power plant unit performance examination and statistics system, but the dispatching master station only provides information publishing and dispute reporting functions for the power plant. Since the published information has a certain time delay, the power plant lacks effective means to monitor and analyze the operation data related to performance examination in real time, and also lacks means to timely notify the power plant operators of the unqualified examination results in real time, so as to take prompt measures for rectification. Once the performance examination is unqualified, it will cause economic losses to the power plant. CONTENT OF THE UTILITY MODEL

[0004] In order to achieve the above purpose, the present disclosure provides a power plant monitoring system, which comprises a plurality of remote hosts, a switch, a grid-connected monitoring terminal and a server.

[0005] Each of the remote hosts is connected with the switch, the switch is connected with the input end of the grid-connected monitoring terminal, and the output end of the grid-connected monitoring terminal is connected with the server.

[0006] Each of the remote hosts corresponds to a different power plant unit, the remote host is used to collect the equipment monitoring data of the power plant unit corresponding thereto, the grid-connected monitoring terminal is used to determine the power plant monitoring data according to the equipment monitoring data collected by the plurality of remote hosts, and the server is used to analyze the power plant monitoring data to obtain the performance examination result of the power plant.

[0007] Optionally, the switch comprises a first interface and a second interface, the first interface and the second interface are mirror interfaces for outputting homologous data, the first interface of the switch is connected with the input end of the grid-connected monitoring terminal, and the second interface of the switch is connected with the dispatching master station corresponding to the power plant.

[0008] Optionally, the switch is a plurality of switches, each of the remote hosts is connected with each of the switches, and each of the switches is connected with the grid-connected monitoring terminal.

[0009] Optionally, the plurality of switches comprises a first switch, a second switch and a third switch, the first switch and the second switch correspond to the same dispatching network, and the third switch corresponds to a 2M leased line network.

[0010] Optionally, the system further comprises a forward physical isolation device, an output end of the grid-connected monitoring terminal is connected with the server through the forward physical isolation device, and the forward physical isolation device only allows one-way data transmission from the grid-connected monitoring terminal to the server.

[0011] Optionally, the system further comprises a frequency meter, the frequency meter is connected with the server, the frequency meter is in communication connection with the power plant unit, and the frequency meter is used to collect the operating frequency of the power plant unit and send the collection result to the server.

[0012] Optionally, the grid-connected monitoring terminal comprises a database, and the database is used to store the equipment monitoring data collected by each remote host.

[0013] Optionally, the system further comprises a workstation, the workstation is connected with the server, and the workstation is used to view and manage the performance evaluation result of the power plant stored in the server.

[0014] Optionally, the workstation comprises a display module, the display module is used to display the performance monitoring result of the power plant and the management function options of the power plant monitoring system.

[0015] Optionally, the server further comprises an alarm module, the alarm module is used to alarm when the performance evaluation result of the power plant does not meet the preset operating standard.

[0016] By implementing the above technical solutions, the performance evaluation of the power plant unit is successfully realized on the power plant side. The equipment monitoring data for performance evaluation is the same as the data of the dispatching master station, ensuring the consistency and accuracy of the data. This synchronization not only strengthens the overall data supervision of the power plant, but also promotes in-depth analysis of the operating conditions. The power plant monitoring system provided in the present application provides a real-time updated performance evaluation result for power plant operation and maintenance personnel, enabling them to quickly grasp the operating state of the power plant. This greatly improves the efficiency of the maintenance team in locating problems, diagnosing faults and eliminating equipment faults. Through accurate data analysis, maintenance personnel can more quickly identify potential operating risks and take preventive measures, thereby reducing downtime and ensuring continuous and stable operation of the power plant.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, illustrate the present disclosure and, together with the specific embodiments described below, serve to explain the present disclosure but do not constitute a limitation on the present disclosure. In the drawings:

[0019] Figure 1 is a structural schematic diagram of a power plant monitoring system according to an exemplary embodiment.

[0020] Figure 2 is a schematic diagram of a power plant monitoring system according to an exemplary embodiment.

[0021] Legend of reference signs

[0022] Power plant monitoring system 10, remote host 100, switch 200, grid-connected monitoring terminal 300, server 400, forward physical isolation device 500, frequency meter 600, workstation 700, database 301, first switch 201, second switch 202, third switch 203, first interface A1 of the first switch, first interface A2 of the second switch, first interface A3 of the third switch, second interface B1 of the first switch, second interface B2 of the second switch, second interface B3 of the third switch. DETAILED DESCRIPTION

[0023] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0024] The present disclosure provides a power plant monitoring system, as shown in Figure 1 The power plant monitoring system 10 includes a plurality of remote hosts 100, a switch 200, a grid-connected monitoring terminal 300, and a server 400.

[0025] Each of the remote hosts 100 is connected to the switch 200, the switch 200 is connected to the input end of the grid-connected monitoring terminal 300, and the output end of the grid-connected monitoring terminal 300 is connected to the server 400.

[0026] Each of the remote hosts 100 corresponds to a different power plant unit, the remote host 100 is used to collect equipment monitoring data of the power plant unit corresponding to itself, the grid-connected monitoring terminal 300 is used to determine power plant monitoring data according to the equipment monitoring data collected by a plurality of remote hosts 100, and the server 400 is used to analyze the power plant monitoring data to obtain performance evaluation results of the power plant.

[0027] It is worth mentioning that the power plant monitoring system 10 is arranged at the power plant side, which includes a production control area (safety I area) and a management information area (safety III area), the production control area and the management information area are isolated from each other, the remote host 100, the switch 200 and the grid-connected monitoring terminal 300 are located in the production control area, and the server 400 is located in the management information area.

[0028] The remote host 100 can be an RTU (Remote Terminal Unit), and each remote host 100 can correspond to one or more power plant units to realize remote measurement, remote signaling and remote control of the corresponding power plant units, the RTU is used to monitor and control the state of the remote power plant unit in real time, and execute instructions sent by the dispatching master station and / or the power plant side workstation, the instructions include data acquisition instructions, for example, after receiving the data acquisition instruction, the RTU collects the current and voltage of the power plant unit through the sensor; remote control instructions, for example, after receiving the remote control instruction, the RTU remotely controls the opening and closing of the power plant unit; communication instructions, for example, the RTU has multiple communication interfaces such as RS232, RS458 and Ethernet, and after receiving the communication instruction, the RTU can exchange data with the upper monitoring device or other RTUs; data processing instructions, for example, after receiving the data processing instruction, the RTU can preliminarily process the collected data, such as digital filtering, out-of-limit judgment, data conversion, etc.; event recording command, for example, the RTU can record the events and operations occurring on site, such as switch action, alarm information, etc.; remote monitoring command, for example, the RTU can cooperate with the SCADA (Supervisory Control And Data Acquisition) system to enable the operator to remotely monitor the on-site situation of the power plant unit.

[0029] In an embodiment, the server 400 is an AUX server, and the power plant maintenance personnel can browse system information and set parameters through the server, but cannot modify any raw data in the grid-connected monitoring terminal 300, and at the same time, the performance evaluation results of the power plant can be displayed in the form of list, curve, alarm reminder, form and bar chart.

[0030] The server is used to store the power plant monitoring data collected by the remote host and the data analyzed by the grid-connected monitoring terminal, and provides sufficient storage space to retain historical data and real-time data. The server 400 can also further process and analyze the collected power plant monitoring data, such as performing complex data analysis, trend prediction, pattern recognition, etc., to determine the performance evaluation results of the power plant. In addition, the server 400 can also run application programs to display data in the form of charts, reports or other visual forms to users, so as to facilitate operators to monitor and understand the running state of the power plant; remote access, for example, the server can provide remote access function, allowing authorized users to access data and system from other locations, monitoring and control; system management: the server is used to manage system configuration, including user permissions, network settings, security policies, etc.; communication relay: the server can act as a communication relay station, forwarding data to other systems or devices, such as SCADA system, energy management system (EMS) or other decision support systems; alarm and event management, for example, the server can monitor data, and when detecting abnormality or preset condition triggering, generate alarm and event log, notify operator or automatically execute preset response measures.

[0031] The server 400 can perform various parameter settings to ensure efficient operation and safety of the power plant monitoring system 10, such as network settings, security settings, user management, service and application program settings, performance optimization, storage management, backup and recovery, and system monitoring, etc.

[0032] In an embodiment, the equipment monitoring data of the power plant unit includes at least one of electrical data (power generation, voltage, current, power, frequency, etc.), emission data, and energy efficiency indicators. The power plant monitoring data includes the evaluation results of AGC (Automatic Generation Control), AVC (Automatic Voltage Control), power generation plan, and primary frequency control performed on the power plant unit.

[0033] After the grid-connected monitoring terminal 300 obtains the equipment monitoring data from the plurality of remote hosts 100, it can perform the following evaluations to obtain the power plant monitoring data.

[0034] First (AGC evaluation): The power plant monitoring system 10 can calculate the operation rate and qualified rate of AGC according to the daily AGC evaluation data instruction time, actual output, target output, control mode, speed measurement start time, speed measurement start output, speed measurement end output, precision calculation start time, precision calculation end time, etc., and issue an alarm prompt when the evaluation standard is exceeded.

[0035] Second (primary frequency regulation examination): The system can calculate the primary frequency regulation operation rate and the qualified rate according to the system frequency, the primary frequency regulation input signal, the actual output of the unit and the AGC working condition.

[0036] For example, the primary frequency regulation refers to the ability of the generator set to automatically adjust the power generation to maintain the stability of the power grid frequency without the instruction of the automatic generation control (AGC) system. This frequency regulation mode mainly relies on the speed governor of the generator set to realize. The following processes are included:

[0037] S1: The frequency meter monitors the system frequency.

[0038] S2: The power plant monitoring system 10 detects the primary frequency regulation input signal, which indicates that the primary frequency regulation function has been activated, and the power plant unit needs to adjust the power generation according to the frequency deviation.

[0039] S3: The power plant monitoring system 10 monitors the actual output of the generator set in real time. If the AGC system is in the activated state, the system also monitors the working condition of the AGC, including the instruction of the AGC and the response of the unit to the instruction.

[0040] S4: Calculate the primary frequency regulation operation rate, which refers to the ability of the unit to actually participate in frequency regulation when frequency regulation is needed. The calculation method can be: in a certain period of time, the number of times the unit adjusts the power generation in response to the frequency deviation divided by the total number of frequency regulation requirements.

[0041] S5: Calculate the primary frequency regulation qualified rate, which refers to the ability of the unit to adjust the power generation to restore the power grid frequency to the specified range. The calculation method can be: in a certain period of time, the number of times the unit successfully adjusts the frequency to the specified range divided by the total number of frequency regulation times.

[0042] S6: Data analysis and early warning, the power plant monitoring system 10 will analyze the calculated operation rate and qualified rate, if these indicators are lower than the preset standard, the system will issue a warning, prompting the power plant operator to take measures.

[0043] In this way, the power plant monitoring system 10 can help the power plant operator to monitor and evaluate the performance of the primary frequency regulation in real time, adjust the operation strategy in time, ensure the stability of the power grid frequency, and thus maintain the safe and reliable operation of the power system.

[0044] Third (AVC examination): Calculate the operation rate and regulation qualified rate of AVC according to data such as voltage target value.

[0045] Among them, AVC is an important control mechanism to ensure grid voltage stability and maintain within the specified range. AVC system responds to voltage changes by automatically adjusting the voltage regulating devices of power plants and substations (such as transformer tap changers, reactive power compensation devices, etc.) to improve the voltage quality and power supply reliability of the power grid.

[0046] Fourth (generation plan curve assessment): The power plant monitoring system 10 calculates the assessment result according to the generation plan curve and active power output of the unit issued by the dispatching.

[0047] By implementing the above technical solutions, the performance assessment of the power plant unit is successfully realized at the power plant side. The equipment monitoring data used for performance assessment is consistent with the data of the dispatching master station, ensuring the consistency and accuracy of the data. This synchronization not only strengthens the overall data supervision of the power plant, but also promotes in-depth analysis of the operation. The power plant monitoring system provided in the present application provides real-time updated performance assessment results for power plant operation and maintenance personnel, enabling them to quickly grasp the operation status of the power plant. This greatly improves the efficiency of the maintenance team in locating problems, diagnosing faults and eliminating equipment faults. Through accurate data analysis, maintenance personnel can more quickly identify potential operational risks and take preventive measures to reduce downtime and ensure continuous and stable operation of the power plant.

[0048] Optionally, referring to Figure 1 As shown, the switches 200 are multiple, each of the remote host computers 100 is connected with each of the switches 200, and each of the switches 200 is connected with the grid-connected monitoring terminal 300.

[0049] Optionally, referring to Figure 1 As shown, the multiple switches 200 include a first switch 201, a second switch 202 and a third switch 203, the first switch 201 and the second switch 202 correspond to the same dispatching network, and the third switch 203 corresponds to a 2M private line network.

[0050] Among them, the first switch 201 corresponds to a first plane network, the second switch 202 corresponds to a second plane network, the first plane network and the second plane network have the same network nodes, and the first switch 201 and the second switch 202 are redundantly arranged to ensure the high availability of the dispatching network. The third switch 203 corresponds to a 2M private line network to meet the demand for dedicated and high-bandwidth network, which is used for transmitting a large amount of data and software services, such as video monitoring.

[0051] Through the above multiple switches 200, the power plant monitoring system 10 provides network redundancy, so that even if a certain switch 200 or network path has a problem, data can still be transmitted through other paths, and network traffic is distributed among multiple switches 200, which can reduce the load of a single switch 200 and improve the performance of the entire network.

[0052] Optionally, referring to Figure 1 and Figure 2 , the system further comprises a forward physical isolation device 500, the output end of the grid-connected monitoring terminal 300 is connected with the server 400 through the forward physical isolation device 500, and the forward physical isolation device 500 only allows one-way data transmission from the grid-connected monitoring terminal 300 to the server 400.

[0053] The forward physical isolation device 500 is used to provide security when data is exchanged between network areas of different security levels. The forward physical isolation device 500 ensures that data can only be transmitted from a high-security level area to a low-security level area in one direction, while preventing any reverse data flow, thereby protecting the high-security level network from potential threats from the low-security level network. For example, the grid-connected monitoring terminal 300 is located in the production control area (security I area) which has a relatively high security level, while the server 400 is located in the management information area (security III area) which has a relatively low security level. Therefore, the server 400 can only obtain the power plant monitoring data analyzed by the grid-connected monitoring terminal 300, but cannot modify the device monitoring data collected by the remote host 100, thereby ensuring the security and accuracy of the power plant data.

[0054] Optionally, referring to Figure 1 , the system 10 further comprises a frequency meter 600, the frequency meter 600 is connected with the server 400, the frequency meter 600 is in communication connection with the power plant unit, and the frequency meter 600 is used to collect the operating frequency of the power plant unit and send the collection result to the server 400.

[0055] The frequency meter 600 is used to collect the operating frequency of the power plant unit and send the collection result to the server 400. Figure 2As shown, the frequency meter 600 is a high-precision frequency meter UC630 supporting high-precision second pulse signal acquisition and time information decoding of GPS (Global Positioning System), and can realize high-precision frequency measurement in various harmonic and noise environments, and accurately reflect the real-time operation state of the power system. At the same time, the frequency meter 600 adopts a modular design technology of software and hardware, so that maintenance is more convenient, and function expansion is easier. The time signal of the frequency meter is a PPS (Pulse Per Second) signal of TTL (Transistor Transistor Logic) level and a B code time signal of RS485 level, and the field time synchronization device supports the PPS second pulse time signal.

[0056] The frequency meter 600 can obtain the frequency data of the power plant unit in real time, and perform accurate measurement and analysis, and send the analysis result to the server 400. The communication connection between the frequency meter 600 and the power plant unit can also support remote monitoring and diagnosis, so that the power plant operator can respond to any frequency deviation in time and take necessary control measures to maintain the normal operation of the power grid.

[0057] Optionally, the grid-connected monitoring terminal 300 comprises a database (not shown) for storing the equipment monitoring data collected by each remote host 100.

[0058] Optionally, the switch 200 comprises a first interface and a second interface, the first interface and the second interface are mirror interfaces for outputting homologous data, the first interface of the switch 200 is connected with the input end of the grid-connected monitoring terminal 300, and the second interface of the switch 200 is connected with the corresponding dispatching master station of the power plant.

[0059] It is worth noting that in some related technologies, a performance monitoring system of the power plant unit is usually added in the DCS (Distributed Control System), but due to different data source collection devices, inconsistent time synchronization, inconsistent data processing methods, etc., the dispatching data of the power plant side and the dispatching master station and the performance detection result of the power plant are different.

[0060] Therefore, the input ends of the grid-connected monitoring terminal 300 and the dispatching master station are connected with two corresponding mirror interfaces, i.e. the first interface and the second interface, so that the dispatching master station and the grid-connected monitoring terminal obtain homologous and consistent equipment monitoring data.

[0061] For example, referring to Figure 1As shown, each switch 200 includes two interfaces, an A interface and a B interface, which are mirror interfaces, wherein the A interface is the first interface and the B interface is the second interface, the first interface A1 of the first switch 201, the first interface A2 of the second switch 202 and the first interface A3 of the third switch 203 are connected with the grid monitoring terminal 300, and the second interface B1 of the first switch 201, the second interface B2 of the second switch 202 and the second interface B3 of the third switch 203 are connected with the dispatching master station, so that the data output by the A interface and the B interface of each switch 200 are the same and homologous, which ensures the consistency of the power plant performance evaluation on the power plant side and the dispatching master station side from the perspective of data collection.

[0062] Optionally, referring to Figure 1 As shown, the system further includes a workstation 700 connected with the server 400, and the workstation 700 is used for viewing and managing the performance evaluation results of the power plant stored in the server 400.

[0063] Participate Figure 2 As shown, the workstation is an AUX workstation.

[0064] Optionally, the workstation 700 includes a display module (not shown) for displaying the performance monitoring results of the power plant and management function options of the power plant monitoring system 10.

[0065] In an embodiment, the display module of the workstation 700 displays the performance data of the power plant obtained from the server 400 in real time, such as power generation, frequency, voltage and current, etc. The display module also provides a historical data comparison function, allowing users to select data of different time periods for comparison to evaluate changes in the performance of the power plant, wherein the performance evaluation results of the power plant can be displayed in the form of charts and curves, allowing users to intuitively understand the data trends and patterns.

[0066] In an embodiment, the management function options displayed by the display module include parameter setting options, such as setting the operation standards and data collection frequency of the power plant, system setting options, such as network settings, user permissions and security settings.

[0067] Optionally, the server 400 further includes an alarm module (not shown) for alarming in the case that the performance evaluation results of the power plant do not meet the preset operation standards.

[0068] The preset operation standards include at least one of the power generation efficiency, emission standards and equipment temperature of each power plant unit, and the alarm module can issue alarms in various ways such as sound, light, email, SMS or application notification, and according to the severity of the alarm, the alarm module can set different priorities to ensure that emergency situations are given priority.

[0069] In an embodiment, when the performance test result of the power plant does not meet the preset operation standard or any device fails, the display module highlights the alarm information, for example, displays "No signal of No. 1 remote host", "Abnormal voltage of No. 2 power plant unit" on the display page of the reality model.

[0070] The alarm module not only improves the safety of the system, but also speeds up the response speed to potential problems, thereby ensuring the stable operation of the power plant.

[0071] In an embodiment, the power plant monitoring system further comprises the following functions.

[0072] First: Remote real-time monitoring communication channel function.

[0073] The grid-connected monitoring terminal 300 can capture the communication messages of at least 6 network channels of the remote host 100 and the multi-level dispatch communication. Real-time analysis of user-selected network channel or serial port channel communication messages, real-time display of communication conditions including: TCP connection of network channel, TCP connection interruption, link calling and confirmation, initialization end, sending and receiving message timeout, message sequence number inequality.

[0074] Real-time data, historical data, message query and channel state are visually displayed by visual means, and the monitoring content is saved to realize the functions of query, export and printing of historical data, historical messages and the like.

[0075] Second: Remote channel data monitoring and alarm function.

[0076] The information table of the remote host 100 and the multi-host communication, the AI / AO range conversion and the upper and lower limit value table can be imported to identify data exceeding the limit value or invalid data. The point number and value in the remote signaling, remote measurement, remote adjustment, remote control and pulse message reported by full data and changed data are engineering interpreted, analyzed, processed and recorded.

[0077] Third: Dispatch instruction recording function.

[0078] The dispatch instruction communicated by IEC 60870-5-101 / 104 protocol can be analyzed, the AGC and AVC instructions issued by the master station, the instruction issue time and the response of the remote host 100 to the instruction can be obtained from the message in time, the message reported by the remote host 100 to the dispatch master station after receiving the AGC / AVC instruction can be analyzed, and the response of the remote host 100 to the instruction can be obtained.

[0079] Fourth: Dispatch remote adjustment instruction abnormality analysis function.

[0080] According to the configuration, automatic real-time analysis and alarm scheduling are issued AGC / AVC target value and other remote control instruction exception problems, and the abnormal data can be packaged. Including scheduling timeout without issuing remote control, scheduling issuing remote control exception, scheduling issuing remote control limit, scheduling issuing remote control returning telemetry exception, scheduling issuing AGC / AVC target value and measured active or bus voltage comparison adjustment direction inconsistency and other problems.

[0081] Fifth: display function.

[0082] Through the display module of the workstation 700, the power plant monitoring system 10 topology, the overview of the running state, the management personnel on the power plant side can intuitively understand the whole plant scheduling mode, the actual output of the unit, the AGC instruction, the AVC instruction, the bus voltage, the channel state and other conditions to display, so that the operator can customize the power generation plan according to the work demand.

[0083] Sixth: comparative analysis function.

[0084] The server 400 realizes the comparative analysis of all main parameters in the whole plant, analyzes the influence of the main operating parameters on the load change, and improves the operation and management level of the power plant. In the data comparison process, the comparison period can be adjusted according to the actual situation (such as comparing the data within 24 hours with 5 minutes as an interval, and 1 minute as an interval for short-term), and can be scaled and rolled according to date.

[0085] Seventh: data storage function.

[0086] The grid-connected monitoring terminal 300 includes a database 301 that can store power plant operation data related to performance evaluation and communication messages. The data includes bus voltage, frequency, unit active power, reactive power, etc.

[0087] The basis for performance evaluation is the real-time operation data of the power plant. The dispatch analyzes the data according to the data sent by the power plant and the relevant conditions of the evaluation, but in the traditional remote mode, in addition to the SOE (Sequence of Events, event sequence record) function of remote signaling, there is no concept of time scale for analog quantities and no means of data storage. Therefore, if the evaluation data is obtained from the RTU in the form of communication, the obtained data must be marked with a time scale, and the data is stored according to the time scale.

[0088] Eighth: data browsing and query function.

[0089] In order to ensure the objectivity and fairness of the information, the power plant user can access the server 400 through the remote network or the workstation 700 to set parameters and browse information, but cannot modify any original data.

[0090] Ninth: data export function.

[0091] The grid-connected monitoring terminal 300 can transfer (or backup) various data and records stored in the monitoring device to other dedicated storage devices.

[0092] Through the above scheme, the power plant monitoring system 10 can provide comprehensive monitoring, analysis and management tools to help the power plant improve operation efficiency, ensure safety compliance, and optimize power generation plans.

[0093] The preferred embodiments of the present disclosure are described in detail above in combination with the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0094] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0095] In addition, various different embodiments of the present disclosure can also be combined in any manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed by the present disclosure.

Claims

1. A power plant monitoring system, characterized by, The system comprises a plurality of remote hosts, a switch, a grid-connected monitoring terminal and a server; Each of the remote hosts is connected with the switch, the switch is connected with the input end of the grid-connected monitoring terminal, and the output end of the grid-connected monitoring terminal is connected with the server; Each of the remote hosts corresponds to a different power plant unit, the remote host is used to collect the equipment monitoring data of the power plant unit corresponding thereto, the grid-connected monitoring terminal is used to determine the power plant monitoring data according to the equipment monitoring data collected by a plurality of remote hosts, and the server is used to analyze the power plant monitoring data to obtain the performance evaluation result of the power plant.

2. The power plant monitoring system of claim 1, wherein, The switch comprises a first interface and a second interface, the first interface and the second interface are mirror interfaces for outputting homologous data, the first interface of the switch is connected with the input end of the grid-connected monitoring terminal, and the second interface of the switch is connected with the dispatching master station corresponding to the power plant.

3. The power plant monitoring system of claim 2, wherein, The switch is a plurality of switches, each of the remote hosts is connected with each of the switches, and each of the switches is connected with the grid-connected monitoring terminal.

4. The power plant monitoring system of claim 3, wherein, The plurality of switches comprises a first switch, a second switch and a third switch, the first switch and the second switch correspond to the same dispatching network, and the third switch corresponds to a 2M private line network.

5. The power plant monitoring system of claim 1, wherein, The system further comprises a forward physical isolation device, the output end of the grid-connected monitoring terminal is connected with the server through the forward physical isolation device, and the forward physical isolation device only allows one-way data transmission from the grid-connected monitoring terminal to the server.

6. The power plant monitoring system of claim 1, wherein, The system further comprises a frequency meter, the frequency meter is connected with the server, the frequency meter is in communication connection with the power plant unit, and the frequency meter is used to collect the operating frequency of the power plant unit and send the collection result to the server.

7. The power plant monitoring system of claim 1, wherein, The grid-connected monitoring terminal comprises a database, and the database is used to store the equipment monitoring data collected by each of the remote hosts.

8. The power plant monitoring system of claim 1, wherein, The system further comprises a workstation, the workstation is connected with the server, and the workstation is used to view and manage the performance evaluation result of the power plant stored in the server.

9. The power plant monitoring system of claim 8, wherein, The workstation comprises a display module, and the display module is used to display the performance monitoring result of the power plant and the management function options of the power plant monitoring system.

10. The power plant monitoring system of claim 1, wherein, The server further comprises an alarm module, and the alarm module is used to alarm when the performance evaluation result of the power plant does not meet the preset operation standard.

Images