Measurement and control data transmission method for redundant protection of monitoring system

Abstract

The invention relates to a data transmission method for redundancy protection measurement and control of a monitoring system. The method is applied to protecting, measuring and controlling the monitoring system of redundancy configuration of apparatuses A and B. At first priorities of the apparatuses A and B are arranged in a multi-source data processing module, data provided by the apparatuses A and B are respectively packaged to form data source objects A and B, the data source objects A and B respectively pass by a front communication processing module and are input in the multi-source data processing module. Based on operation states of the apparatuses A and B at present, the multi-source data processing module selects a data source in one of the apparatuses to process and then submits data to SCADA. The SCADA performs business processing to the data submitted by the multi-source data processing module. If processing instructions need to be published, the SCADA transmits the processing instructions to the multi-source data processing module. Based on the operation states of the apparatuses A and B at present, the multi-source data processing module selects one of the apparatuses to transmit the processing instructions. The method guarantees high efficiency and accuracy of data transmission.

Description

technical field [0001] The invention belongs to the technical field of automatic control systems, and relates to a monitoring system redundancy protection measurement and control data transmission method. Background technique [0002] Multi-source data means that a certain data in the background real-time database has multiple data sources, such as the active power Pa of the same line comes from device A and device B. There are two options for processing multi-source data: [0003] (1) The protection adopts the redundant mode, and the measurement and control function is set to switch on and off the soft pressure plate. During normal operation, only the measurement and control function of one device is put into operation. [0004] The disadvantages of this solution are: ①It is not easy to coordinate how to switch on and off the redundant protection measurement and control devices of different manufacturers; ②When one device is in the maintenance state and another device is ...

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Problems solved by technology

[0004] The disadvantages of this solution are: ①It is not easy to coordinate how to switch on and off the redundant protection measurement and control devices of different manufacturers; ②When one device is in the maintenance state and another device is put into the measurement and control function, the monitoring background still needs to carry out redundant data Source switching processing; ③There are problems in the management of the added measurement and control functions, and the management of the soft platen is difficult to define; ④The background cannot be switched when configured according to a single measurement and control device

[0006] The disadvantages of this solution are: ①The two sets of devices have independent ICD files. For the same data source, there are two sets of object references. Mapping; ②Due to the integration of protection and measurement and control, if the hot standby method is adopted, that is, only one device uploads protection information and measurement and control information normally, and the other device does not upload it, which does not conform to the original dual protection and simultaneous upload dualization Requirements for protecting information; ③Because the device has the report buffer function only after the report is enabled, when the backup measurement and control device is in the process of switching, sudden displacement information occurs, which will lead to signal loss

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