Power station control system and automatic modeling method thereof

Abstract

The invention belongs to the technical field of power station control, and particularly relates to a power station control system and an automatic modeling method thereof. In order to solve the problem that the manual modification process is tedious and easy to make mistakes due to the change of a spacer layer device model in a power monitoring system, the model is automatically established according to service information of a spacer layer device, and when the model in the spacer layer device changes, the model is automatically modified according to the service information of the spacer layer device. A new model of the bay level device is automatically obtained or an old model is sent to the bay level device according to requirements, so that model unification of the bay level device, the in-station monitoring system and the data communication gateway machine is completed, a service data interaction stage is entered, plug and play of the power station control system accessing the bay level device is realized, and the service efficiency is improved. And the accessed debugging process is simpler and more efficient.

Description

Technical Field

[0001] The present invention belongs to the technical field of power station control, and in particular relates to a power station control system and an automatic modeling method thereof. Background Art

[0002] The power station control system mainly includes monitoring communication system and bay layer devices. The monitoring communication system includes station monitoring system and data communication gateway. At present, the power station control system of substations, power plants and new energy plants has basically popularized DL / T860 protocol communication. The DL / T860 protocol adopts modeling based on communication service information. The information model adopts the semantic representation of the communication model, which has excellent communication and model interoperability.

[0003] The current modeling process is as follows: the in-station monitoring system is generally used as an integrated device. After integrating the ICD model file provided by the interval layer device, an SCD model file is generated. Then the SCD model file is imported into the in-station monitoring system and the data communication gateway to generate a database model; the in-station monitoring system continues to complete business functions and graphic configuration functions based on the database model; the data communication gateway continues to complete business functions and forwarding model configuration based on the database model; the current data access process is as follows: after the in-station monitoring system and the data communication gateway complete information modeling, they connect to the interval layer device to start communication and data interaction debugging, including data debugging such as telesignaling, telemetry and remote control. During this process, if the interval layer device model changes or the measurement point name changes, the in-station monitoring system and the data communication gateway will frequently manually modify the database and graphic configuration. The model iteration and debugging of equipment access is a tedious, complex, time-consuming and error-prone process. Summary of the invention

[0004] The object of the present invention is to provide a power station control system and an automatic modeling method thereof, so as to solve the problem that the manual modification process is cumbersome and error-prone due to changes in the model of the bay layer device in the power monitoring system.

[0005] To solve the above technical problems, the present invention provides an automatic modeling method for an electric power station control system. After the monitoring and communication system in the electric power station control system establishes communication with the interval layer device, if the monitoring and communication system detects that the model in the interval layer device is changed compared to the model established according to the service information of the interval layer device stored in the monitoring and communication system, it is determined whether to adopt the new model in the interval layer device: if the new model is adopted, the service information of the interval layer device is re-acquired to establish and store the new model; if the new model is not adopted, the in-station monitoring system in the monitoring and communication system is used to publish the old model to the interval layer device, so that the interval layer device is updated to the old model.

[0006] Its beneficial effects are: in order to solve the problem that the model of the interval layer device in the power monitoring system changes, resulting in a cumbersome and error-prone manual modification process, the present invention automatically establishes a model through the service information of the interval layer device, and when the model in the interval layer device changes, the new model of the interval layer device is automatically obtained or the old model is sent to the interval layer device according to demand, thereby completing the model unification of the interval layer device with the in-station monitoring system and the data communication gateway machine to enter the business data interaction stage, realizing the plug-and-play of the power station control system accessing the interval layer device, and making the access debugging process simpler and more efficient.

[0007] Furthermore, if the model in the in-station monitoring system changes, the changed new model is directly published to the corresponding bay layer device, so that the model in the bay layer device is updated to the new model.

[0008] Its beneficial effects are: after solving the problem that the model of the interval layer device changes, which makes the manual modification process cumbersome and error-prone, it further prevents the problems caused by changes in the model in the station monitoring system, thereby avoiding the inconsistency of the model of the interval layer device and the station monitoring system and the data communication gateway, and further realizing the plug-and-play of the power station control system accessing the interval layer device.

[0009] Furthermore, after the bay layer device is updated to the old model, it is necessary to verify with the model in the station monitoring system to ensure that the bay layer device is consistent with the model in the station monitoring system.

[0010] The beneficial effects are: further preventing errors from occurring when the in-station monitoring system publishes the model to the bay layer device, and further ensuring the model uniformity between the bay layer device and the in-station monitoring system.

[0011] Furthermore, if the data communication gateway in the monitoring communication system detects that the model in the interval layer device has changed compared to the model established based on the service information of the interval layer device stored in the data communication gateway, and the new model is not adopted, it is necessary to verify the old model in the interval layer device and the model in the data communication gateway. If the two models are different, the data communication gateway re-acquires the service information of the interval layer device to update the model and store it.

[0012] Its beneficial effect is: after the old model is published to the interval layer device through the station monitoring system, it prevents the old model in the station monitoring system and the data communication gateway from being different, ensures the model unification of the interval layer device and the data communication gateway, and further realizes the plug-and-play of the power station control system accessing the interval layer device.

[0013] Furthermore, after the bay layer device is updated to a new model, it is verified with the model in the station monitoring system to ensure that the models of the bay layer device and the station monitoring system are consistent.

[0014] Its beneficial effects are: it is conducive to the accuracy of model changes in the station monitoring system and the publication of the changed model to the interval layer device, and further ensures the consistency of the model between the interval layer device and the station monitoring system.

[0015] Furthermore, the service information of the bay layer device includes reading a server directory, reading a logical device directory, reading a logical node directory, and reading a data definition.

[0016] The beneficial effect is that the service information of the spacer layer device is collected from multiple aspects, so that the established model is more in line with the actual state of the spacer layer device, so that the established model is more reliable.

[0017] Furthermore, a model version number is set in the model, and the model version number is updated when the model changes; the model version number is used to detect whether the model has changed.

[0018] The beneficial effects are: effectively improving the recognition accuracy of model changes and simplifying the way of identifying model changes, so as to simplify the debugging process and reduce the time, thereby improving the reliability of modeling.

[0019] Furthermore, the monitoring communication system communicates with the bay layer device to be connected via IP and IEDName.

[0020] Its beneficial effects are: effectively improving the accuracy of communication between the bay layer device and the station monitoring system or data communication gateway, and only needing to enter the IP and IEDName to complete the communication, simplifying the communication method and reducing the communication time.

[0021] Furthermore, when the monitoring communication system stores the model, it also needs to store it in an SCD file.

[0022] The beneficial effect is that after the model changes, the interval layer device can automatically load the model after being disconnected from the station monitoring system or data communication gateway and restarted, thereby reducing manual operations, simplifying the debugging process, and improving debugging efficiency.

[0023] In order to solve the above technical problems, the present invention also provides a power station control system, which includes a monitoring and communication system and an interval layer device, and the monitoring and communication system includes an in-station monitoring system and a data communication gateway machine, and is characterized in that the monitoring and communication system is used to: after establishing communication with the interval layer device, if it is detected that the model in the interval layer device is changed compared with the model established according to the service information of the interval layer device stored in the monitoring and communication system, then it is determined whether to adopt the new model in the interval layer device: if the new model is adopted, the service information of the interval layer device is re-acquired to establish and store the new model; if the new model is not adopted, the in-station monitoring system in the monitoring and communication system is used to publish the old model to the interval layer device, so that the interval layer device is updated to the old model.

[0024] The beneficial effects are as follows: the present invention automatically establishes a model through the service information of the interval layer device, and when the model in the interval layer device changes, the new model of the interval layer device is automatically obtained or the old model is sent to the interval layer device according to demand, thereby completing the method of model unification of the interval layer device with the station monitoring system and the data communication gateway machine, realizing plug-and-play of the power station control system, and making the system debugging process simpler and more efficient during access. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the structure of the power station control system of this embodiment;

[0026] Figure 2 is a schematic diagram of the model version parameter code of the spacing layer device of this embodiment;

[0027] Figure 3 This is a flow chart of the in-station monitoring system and the data communication gateway machine automatically acquiring the model service of this embodiment;

[0028] Figure 4 is a flow chart of a model version verification service of the in-station monitoring system of this embodiment;

[0029] Figure 5 is a flow chart of the model publishing service of the in-station monitoring system of this embodiment;

[0030] Figure 6 is a flow chart of the model version verification service of the data communication gateway machine of this embodiment;

[0031] Figure 7 This is a flow chart of the model validation service of the bay layer device of this embodiment. DETAILED DESCRIPTION

[0032] The basic concept of the present invention is: after the to-be-connected interval layer device completes communication with the monitoring and communication system, the monitoring and communication system obtains the model information of the interval layer device to complete the modeling, and when it detects that the model of the interval layer device has changed, it automatically obtains the new model information of the interval layer device or publishes the old model to the interval layer device, thereby completing the unification of the model; the principle of the present invention is: after the monitoring and communication system performs modeling according to the device information, the model information is stored, if the model changes and needs to be updated, the monitoring and communication system re-obtains the model information from the interval layer device to establish a new model, if the model changes and does not need to be updated, the in-station monitoring system in the monitoring and communication system publishes the old model to the interval layer device. Based on this concept, a power station control system and an automatic modeling method thereof of the present invention can be realized.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and method embodiments.

[0034] Power station control system implementation example:

[0035] A power station control system of the present invention has a flow chart as shown in Figure 1 As shown, the system includes: a monitoring communication system and multiple interval layer devices, and the monitoring communication system includes an in-station monitoring system and a data communication gateway machine, and the in-station monitoring system and the data communication gateway machine are used to obtain information of multiple interval layer devices to complete the model establishment. On the basis of this power station control system, the present invention adopts an automatic modeling method of the power station control system to solve the problem that the model of the interval layer device in the power monitoring system changes, resulting in a cumbersome and error-prone manual modification process. The method includes the following services: automatic model acquisition service, model version verification service and model change publishing service of the in-station monitoring system; automatic model acquisition service and model version verification service of the data communication gateway machine; model validation service of the interval layer device.

[0036] 1) Automatic acquisition model service of the station monitoring system.

[0037] When a bay layer device needs to be connected to the station monitoring system, the IP and IEDName (the name of the intelligent device specified in the information communication and model of the DL / T860 protocol) of the bay layer device are entered on the client, and the two are connected through a network cable to complete the communication. The station monitoring system then initiates the DL / T860 AC operations such as reading the server directory (GetServerDirectory), reading the logical device directory (GetLogicalDeviceDirectory), reading the logical node directory (GetLogicalNodeDirectory), reading the data directory (GetDataDirectory) and reading the data definition (GetDataDefinition). The SI class model service is provided to the interval layer device. After the station monitoring system receives the data from the interval layer device in response to the above service, the station monitoring system completes the automatic modeling of the information in the memory model library according to the received response data, and generates the IED instance configuration file (CID) of the interval layer device, and then automatically integrates the interval layer device model into the system configuration description file (SCD), and further updates the information model memory containing this interval layer device to the information model binary memory file of the station monitoring system. At the same time, the software of the station monitoring system automatically obtains the model version (cfgRev) and records it in the non-volatile memory; wherein, the system configuration description file (SCD) will be used to automatically load and initialize the model to the memory when the station monitoring system is restarted.

[0038] 2) Model version verification service for the in-station monitoring system.

[0039] When a certain interval layer device that has completed modeling is connected to the station monitoring system through a network cable, the model version parameter value of the interval layer device is obtained through the data value reading service GetDataValues. If the model version read is inconsistent with the model version recorded by the station monitoring system, the maintenance personnel are reminded of the version inconsistency through a self-check alarm. Subsequently, the maintenance personnel manually choose whether to adopt the new model of the device. If the new model is adopted, it is necessary to obtain the new model of the device through the automatic acquisition model service of the station monitoring system. During the acquisition of the new model, it is checked with the memory model library in real time. If the check is inconsistent, only the inconsistent parts of the file in the memory model library are updated, and the changed parts are also updated to the SCD of the power station control; if the new model is not adopted, the CID stored in the station monitoring system is transferred to the interval layer device through the file transfer service (SetFile). At this time, the model validation service of the interval layer device should regularly check whether the model has changed.

[0040] 3) Model change publishing service for the on-site monitoring system.

[0041] The in-station monitoring system publishes the stored model to the corresponding interval layer device through SetFile. If a new model is selected in the model version verification service of the in-station monitoring system, cfgRev needs to be increased by 0.01 before publishing; otherwise, cfgRev does not need to be increased by 0.01 before publishing. After the in-station monitoring system publishes the model to be sent to the interval layer device through SetFile, the model validation service of the interval layer device periodically checks whether the model has changed.

[0042] 4) Automatic acquisition model service of data communication gateway.

[0043] When an interval layer device needs to be connected to the data communication gateway, the IP and IEDName of the interval layer device are entered on the client, and the two are connected through a network cable to complete the communication. The data communication gateway then initiates the ACSI class model service of reading the server directory, reading the logical device directory, reading the logical node directory, reading the data directory and reading the data definition DL / T860 to the interval layer device. After the data communication gateway receives the data of the interval layer device in response to the above services, the data communication gateway completes the automatic modeling of the information in the memory model library according to the received response data, and generates the CID file of the interval layer device, and then automatically integrates the interval layer device model into the SCD file, and further updates the information model memory containing this interval layer device to the information model binary memory file of the data communication gateway. At the same time, the software of the data communication gateway records the automatically obtained cfgRev in the non-volatile memory.

[0044] 5) Model version verification service for data communication gateway.

[0045] When a certain interval layer device that has completed modeling is connected to the data communication gateway through a network cable, the model version parameter value of the interval layer device is obtained through the data value reading service GetDataValues. If the model version read is inconsistent with the model version recorded by the data communication gateway, the maintenance personnel are reminded of the version inconsistency through a self-check alarm. Subsequently, the maintenance personnel manually choose whether to adopt the new model of the device. If the new model is adopted, it is necessary to obtain the new model of the device through the automatic acquisition model service of the data communication gateway. During the acquisition of the new model, it is verified with the memory model library in real time. If the verification is inconsistent, only the inconsistent parts of the files in the memory model library are updated, and the changed parts are also updated to the SCD of the power station control; if the new model is not adopted, the model verification of the interval layer device is completed through the model version verification service of the station monitoring system, and then the data communication gateway verifies again whether it is consistent with the model in the interval layer device. If it is inconsistent, the device model is re-obtained through the automatic acquisition model service.

[0046] 6) Model validation service for spacer layer devices.

[0047] The model validation service of the bay layer device checks whether the model has changed when receiving the model file released by the station monitoring system (or at regular intervals). If there is a change, it should automatically take effect in real time. After the change takes effect, the bay layer device actively disconnects the link, and the station monitoring system and the data communication gateway initiate the reconnection and association process, and enter the model version verification service again. If the versions are consistent, the data interaction stage is entered.

[0048] The specific implementation examples of each service are as follows:

[0049] Generally, a station control system has a station monitoring system and a data communication gateway configured as two machines. The two-machine configuration is irrelevant to the content of this embodiment. Figure 1 In the example, the station monitoring system 1 and the data communication gateway 1 are used. The IP address of the station monitoring system 1 is 10.100.100.1, the IP address of the data communication gateway 1 is 10.100.100.6, the IP address of the bay layer device 1 is 10.100.100.70, and its IEDName is CT01. The model version is represented by the version number. Figure 2 It is the model version parameter of the spacer layer device 1, the parameter value is set to 1.06, and its reference is CT01LD0 / LPHD1 / PhyNam.cfgRev.

[0050] like Figure 3 As shown, when the interval layer device 1 is plugged into the network cable to connect to the station control layer network, there is no device model in the station monitoring system or data communication gateway, so it is necessary to manually enter the IP address 10.100.100.70 and IEDName CT01 to enter the automatic model acquisition process; after successfully establishing a connection with the interval layer device with IP 10.100.100.70, the station monitoring system or data communication gateway immediately initiates the ACSI class model service of reading the server directory, reading the logical device directory, reading the logical node directory, reading the data directory and reading the data definition DL / T860, and outputs the model data responded by the interval layer device 1 to the memory, CID and SCD; then the automatically acquired model version parameter value (cfgRev=1.06) is recorded in the non-volatile memory.

[0051] like Figure 4As shown in the figure, after the communication interruption is restored and the connection association is completed, the model version verification service of the station monitoring system automatically initiates the reading of the model version (CT01LD0 / LPHD1 / PhyNam.cfgRev) through GetDataValues, and the return value is 1.06. If the station monitoring system records that the model version of the device is 1.05, the model version is inconsistent, and an alarm is immediately issued to prompt the operation and maintenance personnel to choose whether to use the 1.06 version or the 1.05 version of the model; if the 1.06 version model is used, the station monitoring system will initiate the automatic acquisition model service process to obtain the 1.06 version model of the interval layer device 1 to the station monitoring system; if the 1.06 version model is not used, the station monitoring system will transmit the local 1.05 version model to the interval layer device 1 through the model change publishing service, and then keep the model version consistent with 1.05 through the model version verification service process again, thereby completing the model consistency verification and entering the business data interaction process.

[0052] like Figure 5 As shown, after the in-station monitoring system changes the device model (such as: data set member changes, measurement point name changes, etc.), the in-station monitoring system records the device model version plus 0.01 as 1.07, and then transmits the IED instance configuration (CID) model file with a model version value of 1.07 to the interval layer device 1 through the SetFile service; after the interval layer device 1 receives this CID file, the real-time effectiveness service of the interval layer device 1 will monitor this file and take effect in real time, and then disconnect, waiting for the client (in-station monitoring system or data communication gateway) to connect and enter the business data interaction process.

[0053] like Figure 6 As shown, the only difference from the model version verification service process of the in-station monitoring system is that when the model versions are inconsistent and the interval layer device model is manually selected not to be used, the in-station monitoring system model should be changed and released to unify the models of the in-station monitoring system and the interval layer device. After the model version is unified, if the model version verification service process of the data communication gateway finds that the version is inconsistent again, it is necessary to choose to use the model of the interval layer device, thereby completing the model unification of the in-station monitoring system, data communication gateway and interval layer device, and then the business data interaction process can be entered.

[0054] like Figure 7As shown, after the bay layer device receives the CID file transmitted by the model change publishing service of the station monitoring system, the model validation service process will be triggered or started regularly. The model validation service will check the size and time of the IED instance configuration model file (CID) stored in the bay layer device. If any of them is inconsistent, it will start to automatically load the new model file into the memory, then disconnect, wait for the client (station monitoring system or data communication gateway) to initiate a connection, and enter the model version verification service process. After the model version is consistent, it will enter the business data interaction process.

[0055] The present invention solves the problem of complicated and error-prone information modeling and equipment access process through the above method, realizes automatic modeling and plug-and-play of station control systems such as station monitoring systems and data communication gateways accessing interval layer devices, and supports rapid access of station control systems to devices.

[0056] Embodiment of the automatic modeling method of the power station control system:

[0057] An automatic modeling method for an electric power station control system of the present invention automatically establishes a model through the service information of the interval layer device, and when the model in the interval layer device changes, automatically obtains the new model of the interval layer device or sends the old model to the interval layer device according to demand, thereby completing the model unification of the interval layer device with the in-station monitoring system and the data communication gateway machine. The specific implementation process has been described in detail in the electric power station control system embodiment, so it will not be repeated here.

Claims

1. An automatic modeling method for a power station control system, characterized in that: After the monitoring and communication system in the power station control system establishes communication with the interval layer device, if the monitoring and communication system detects that the model in the interval layer device has changed compared to the model established according to the service information of the interval layer device stored in the monitoring and communication system, it determines whether to adopt the new model in the interval layer device: if the new model is adopted, the service information of the interval layer device is re-acquired to establish and store the new model; if the new model is not adopted, the in-station monitoring system in the monitoring and communication system is used to publish the old model to the interval layer device, so that the interval layer device is updated to the old model.

2. The automatic modeling method of the power station control system according to claim 1 is characterized in that: If the model in the monitoring system within the station changes, the changed new model will be directly published to the corresponding interval layer device, so that the model in the interval layer device is updated to the new model.

3. The automatic modeling method of the power station control system according to claim 1 is characterized in that: After the bay layer device is updated to the old model, it is necessary to verify it with the model in the station monitoring system to ensure that the bay layer device is consistent with the model in the station monitoring system.

4. The automatic modeling method of the power station control system according to claim 1 is characterized in that: If the data communication gateway in the monitoring communication system detects that the model in the interval layer device has changed compared to the model established based on the service information of the interval layer device stored in the data communication gateway, and the new model is not adopted, it is necessary to verify the old model in the interval layer device and the model in the data communication gateway. If the two models are different, the data communication gateway re-acquires the service information of the interval layer device to update the model and store it.

5. The automatic modeling method of the power station control system according to claim 2 is characterized in that: After the bay layer device is updated to a new model, it is verified with the model in the station monitoring system to ensure that the model of the bay layer device is consistent with that of the station monitoring system.

6. The automatic modeling method of the power station control system according to claim 1, characterized in that: The service information of the bay layer device includes reading the server directory, reading the logical device directory, reading the logical node directory and reading the data definition.

7. The automatic modeling method for a power station control system according to any one of claims 1 to 5, characterized in that: A model version number is set in the model, and the model version number will be updated when the model changes; the model version number is used to detect whether the model has changed.

8. The automatic modeling method of the power station control system according to claim 1, characterized in that: The monitoring communication system communicates with the bay layer device to be connected via IP and IEDName.

9. The automatic modeling method of the power station control system according to claim 1, characterized in that: When the monitoring communication system stores the model, it also needs to be stored in the SCD file.

10. A power station control system, the system comprising a monitoring communication system and an interval layer device, the monitoring communication system comprising an in-station monitoring system and a data communication gateway, characterized in that: The monitoring communication system is used to: after establishing communication with the interval layer device, if it is detected that the model in the interval layer device has changed compared to the model established according to the service information of the interval layer device stored in the monitoring communication system, then determine whether to adopt the new model in the interval layer device: if the new model is adopted, the service information of the interval layer device is re-acquired to establish and store the new model; if the new model is not adopted, the in-station monitoring system in the monitoring communication system is used to publish the old model to the interval layer device, so that the interval layer device is updated to the old model.

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