CN105207354A - Data transmission method for gateway and smart substation monitoring system data center - Google Patents

Abstract

The invention relates to a data transmission method between a remote machine and a data center of an intelligent substation monitoring system, and belongs to the technical field of electric power engineering relay protection automation. In the present invention, the business service or subsystem operated by the data center of the substation monitoring system is constructed into a virtual intelligent IED. The virtual intelligent IED is a server conforming to the IEC61850 specification. A logical node carries functional data, and interacts data and commands with the remote machine according to the IEC61850 specification. In the present invention, the business service or subsystem operated by the data center of the substation monitoring system is constructed into a virtual intelligent IED, so that the data center of the substation and the remote machine can use MMS messages to interact, and the remote machine can send data to the main station according to the data demand of the main station. station transmission, the present invention improves the reliability of the monitoring system, reduces the pressure of the rapid expansion of the data capacity of the main station, enhances the load capacity of the system, and can effectively utilize a large amount of redundant data of the main station and sub-stations.

Description

Data transmission method between remote machine and intelligent substation monitoring system data center

technical field

The invention relates to a data transmission method between a telemotor and a data center of an intelligent substation monitoring system, and belongs to the technical field of electric power engineering relay protection automation.

Background technique

Under the guidance of the technical specifications for the integration of main power plants and stations, my country's power grid has steadily advanced in the field of power automation and has made great progress. Based on IEC61970, a panoramic data center has been established at the main station, relying on the data bus and data conversion adapter, to provide open comprehensive data support and even multi-section data access support for various advanced professional technical applications, which improves the utilization efficiency of data resources and reduces Avoid repeated investment in hardware equipment.

In the construction of the factory station, based on the IEC61850 technical specification, the station-side automation provider has also been able to provide a panoramic data center that integrates the process layer, interval layer, and station control layer. Through the data center, it not only provides traditional station-side SCADA monitoring And control functions, and continue to explore various advanced business applications usually carried out in the main station at the data source of the power grid, such as zero impedance state estimation in the station, distributed reactive power compensation control, intelligent alarm, remote browsing, etc.

The intelligent remote machine at the station end is responsible for the comprehensive collection, intelligent preprocessing and unified export of various data in the station, mainly including SCADA for measurement and control, sub-station guarantee, metering, status monitoring, PMU, etc. The intelligent data center at the station performs data exchange and supports the subscription and publication of data services. For smart substations, the smart remote machine directly collects the MMS messages of the intelligent IEDs in the station, and can also issue control commands to the control IED device; while the data transmission between the remote machine and the data center of the factory station generally adopts the IEC104 protocol transmission, when the data center of the substation When transmitting data to the data center of the main station, all the data to be uploaded will be packaged and then transmitted to the remote machine through the IEC104 protocol, and the remote machine will upload the packaged data to the main station in a unified manner, while the two-level data centers of the sub-station and the main station are relatively Independent, the data analysis business running on the data platform has basically no complementary relationship, which causes some data redundancy and some business overlap, which causes the data capacity of the master station to expand rapidly and affects the reliability of the system.

Contents of the invention

The purpose of the present invention is to provide a data transmission method between the telemotor and the data center of the intelligent substation monitoring system, so as to reduce the pressure of the rapid expansion of data in the monitoring system of the main station and improve the reliability of the system.

In order to solve the above technical problems, the present invention provides a transmission method between the telemotor and the data center of the intelligent substation monitoring system. To be a server conforming to the IEC61850 specification, the virtual intelligent IED classifies the data transmitted to the main station according to functions, constructs a logical node for each function to carry the functional data, and interacts with the telematics data and commands according to the IEC61850 specification.

The intelligent telemotor includes a client and a server supporting the IEC61850 protocol. The client exchanges MMS messages with the intelligent IED in the substation monitoring system, and the server exchanges MMS messages with the front client in the master station monitoring system.

The server of the remote machine is an intelligent IED conforming to the 61850 specification, and its ICD file is a subset or a complete set of logical nodes of all intelligent IEDs in the station.

The telemotor receives MMS messages of all intelligent IEDs in the station, including virtual intelligent IEDs, packs all data in all sub-station monitoring systems, and transmits data to the main station monitoring system according to the data requirements of the main station monitoring system, At the same time, it forwards the commands and data of the main station monitoring system to the sub station monitoring system.

The main station monitoring system establishes its own business model according to the classification of the monitoring data services by the substation monitoring system. This model and the model of the substation monitoring system should be master-slave distributed, and the data uploaded by the substation monitoring system is the master A subset of the model.

The beneficial effects of the present invention are: the present invention constructs a virtual intelligent IED from the business service or subsystem operated by the data center of the substation monitoring system. Classification of functions, each function constructs a logical node to carry functional data, and interacts data and commands with the remote machine according to the IEC61850 specification. In the present invention, the business service or subsystem operated by the substation monitoring system data center is constructed into a virtual intelligent IED, so that the substation data center and the remote machine use MMS messages to interact, and the remote machine can send data to the main station according to the data requirements of the main station. Station transmission without uploading all the data, the invention improves the reliability of the monitoring system, reduces the pressure of the rapid expansion of the data capacity of the master station, enhances the capacity of the system, and can effectively utilize a large amount of redundant data of the master and sub-stations .

Description of drawings

Figure 1 is a system structure diagram of the integrated monitoring system of the main plant and station.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

At present, the integrated monitoring system of the main factory and station includes the main station and the sub-station. The main station has established a data center and various business services, and the sub-station has also established a data center and various business services, as shown in Figure 1. The transmission between the main station and the sub-station is realized by the intelligent telemotor. The intelligent telemotor includes the client and the server. The client interacts with various intelligent IEDs and data centers of the sub-station, and the server interacts with the pre-client of the main station. According to the business services or subsystems operated by the data center of the substation monitoring system, a virtual intelligent IED is constructed. The virtual intelligent IED is a server conforming to the IEC61850 specification. The virtual intelligent IED classifies the data transmitted to the main station according to functions, and constructs a logic for each function. Nodes carry functional data, and in accordance with the IEC61850 specification and remote machine interaction data and commands, the 104 protocol is no longer used for transmission.

The data transmission equipment between the master and sub-stations is a remote machine. As an intelligent IED, it has a client and a server that support the 61850 protocol. The client exchanges MMS messages with the IED in the station, and the server exchanges MMS messages with the pre-client of the master station. There is a fast data exchange mechanism with the server to provide support for data forwarding between master and sub-stations. The server of the remote machine of the substation is an intelligent IED conforming to the 61850 specification, and its ICD file is a subset or a complete set of logical nodes of all intelligent IEDs in the station. The design of this server follows the second edition of the IEC61850 specification.

The substation monitoring system no longer uses the 104 protocol to communicate with the gateway, but classifies the data that the monitoring system needs to upload to the main station according to the nature or function of the business, and designs the business or function into a logical node, and these data are logical nodes The data set; then these logical nodes are divided into different virtual logical devices, and the monitoring system communicates with the telemotor through the virtual logical devices, and the communication protocol meets the IEC61850 specification. The telemotor receives the MMS messages of all intelligent IEDs in the station, including virtual service IEDs, packs all the data in all stations, transmits data to the master station according to the data requirements of the master station, and forwards the commands and commands of the master station to the slave stations at the same time data. The main station establishes its own business model according to the classification of monitoring data services by the sub-stations. The model and the sub-station model should be master-slave distributed, and the data uploaded by the sub-stations should be a subset of the main station model.

Claims (5)

1. A data transmission method of remote machine and intelligent substation monitoring system data center, characterized in that, the data transmission method is based on the business service or subsystem construction virtual intelligent IED operated by the substation monitoring system data center, and the virtual intelligent IED is A server conforming to the IEC61850 specification, the virtual intelligent IED classifies the data transmitted to the main station according to functions, constructs a logical node for each function to carry the functional data, and interacts with the telematics data and commands according to the IEC61850 specification. 2. The data transmission method between the remote machine and the intelligent substation monitoring system data center according to claim 1, wherein the intelligent remote machine includes a client and a server supporting the IEC61850 protocol, and the client and the substation monitoring system The intelligent IED exchanges MMS messages, and the server side exchanges MMS messages with the front-end client in the monitoring system of the master station. 3. the data transmission method of remote machine and intelligent substation monitoring system data center according to claim 2, is characterized in that, the server of described remote machine is the intelligent IED that meets 61850 norms, and its ICD file is then all intelligent IEDs in the station A subset or a complete set of a set of logical nodes of an IED. 4. the data transmission method of remote machine and intelligent substation monitoring system data center according to claim 3, it is characterized in that, described remote machine receives the MMS message of all intelligent IEDs in the station, comprises virtual intelligent IED, sends all substations All data in the station monitoring system is packaged, and according to the data requirements of the master station monitoring system, the data is transmitted to the master station monitoring system, and at the same time, the commands and data of the master station monitoring system are forwarded to the sub-station monitoring system. 5. the data transmission method of telemotor and intelligent substation monitoring system data center according to claim 4, is characterized in that, described master station monitoring system sets up its own business model according to the classification of monitoring data business by substation monitoring system , the model and the model of the substation monitoring system should be master-slave distributed, and the data uploaded by the substation monitoring system is a subset of the main station model.