Monitoring system and method for booster station of power plant

Abstract

The invention provides a monitoring system and method for a booster station of a power plant, and the system comprises interlayer equipment, station control layer equipment, and an NCS monitoring computer. All secondary equipment employs the IEC61850 communication standard. The system can achieve the direct communication of the secondary equipment of a transformer substation, improves the automatic technological level of the transformer substation, achieves the data modeling, information digitalization, communication platform networking and information sharing standardization of the secondary equipment of the whole transformer substation, reduces a large amount of cable laying operation, solves problems that a secondary loop is too complex and a control cable is liable to be affected by electromagnetism, saves a large amount of investment in transmitters, avoids the information separation among control systems caused by the bottleneck constraint of a conventional transformer substation from information transmission, facilitates the building of the transformer substation and the expansion of an automatic system, achieves the sharing of information between an operation system and other systems, and reduces the repeated investment and construction.

Description

technical field [0001] The invention relates to a monitoring system and a monitoring method for a step-up station of a power plant. Background technique [0002] In recent years, the pilot construction of smart grids and digital (smart) substations has been rapidly promoted in China. So far, hundreds of new or renovated smart substations have been put into operation one after another. In smart sensing technology, information sharing technology, digital sampling technology, network transmission technology , synchronization technology and other aspects have achieved rich results and valuable experience. With the continuous improvement of the automation level of power plants, the requirements for the electrical control system are gradually developing from the monitoring of electrical equipment to the digitalization of information, the networking of communication platforms, and the standardization of information sharing. However, there are still some problems or defects in the ...

AI Technical Summary

Problems solved by technology

However, there are still some problems or defects in the so-called intelligent power plant that the traditional power plant fully applies the IEC61850 technology: the definition and requirements of the intelligent power plant that apply the IEC 61850 standard are relatively vague at the present stage. Guiding documents on relevant norms and procedures have not yet been issued at home and abroad, and the construction of smart power plants is basically in a situation where there are no rules to follow

[0003] The information system of the traditional protocol in the monitoring system of the step-up station of the power plant is flat, and different types of information exist side by side, which cannot reflect the master-slave relationship of the device function. The content that the traditional device needs to communicate cannot be configured arbitrarily. Substations with communication requirements are limited

At present, the traditional communication protocols that are mainly used mainly include: 1. 103 protocol, each manufacturer has it, but they are different. Even if the equipment of two different manufacturers adopts 103 protocol, it may not be able to communicate with each other; 2. Modbus protocol, foreign Many manufacturers use it; 3. DNP3.0, mostly used by American manufacturers; 4. Open2000, NARI Technology; 5. Network 103, NARI Jibao

In addition, the communication media of various manufacturers are not uniform: there are RS422 / 485 / 232, Worldfip, CAN network, lon network, Ethernet, etc., resulting in relatively limited functions of the protocol, and the ability to express data in the protocol limits the development of application functions

Each manufacturer cannot interoperate with self-expanded application functions, and does not support communication functions between devices

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