Method for dynamically monitoring and controlling power system

Abstract

The invention relates to a method for dynamically monitoring and controlling a power system, which belongs to the technical field of power system monitoring and control technologies. in the method, timing is carried out to a sampling result by a satellite positioning system, data is processed, is spliced into a format with variable frame length, and is actively uploaded to a sub-station front-end and other superior systems at set frequency, the control commands of the superior systems are issued via an uplink communication network, so that the dynamic monitoring and the controlling to a power system can be realized. The method can be realized based on an existing mature technology, benefits the control of cost, simultaneously has extremely good compatibility with an original monitoring system in the power system, and is suitable for wide application; simultaneously, the measuring data with time scales can be used for the dynamic monitoring, the analysis and the control of the power system, the appropriate uploading frequency does not increase the data processing burden, a control command downlink channel and a data uplink channel share the same communication network, and the downlink of the control commands is convenient to realize.

Description

technical field [0001] The invention relates to a method for dynamic monitoring and control of a power system, belonging to the technical field of power system monitoring and control. Background technique [0002] With the development of society, the scale of the power system is getting bigger and bigger, and the coverage area is getting wider and wider. At the same time, with the marketization of the power industry, due to the consideration of operational efficiency and other issues, the operation of the power system is getting closer and closer to the stability limit. Several major power outages in recent years are good proof. It is imminent to monitor and even predict the dynamic behavior of wide-area power system and control accordingly. [0003] The main monitoring system of the modern power system is the data acquisition and supervisory control system (hereinafter referred to as SCADA), and the comprehensive control system of the power system is the energy management...

AI Technical Summary

Problems solved by technology

However, the WAMS system also has its shortcomings: the communication network and protocols of the WAMS system are completely incompatible with the standards adopted by the EMS system, and the SCADA / EMS system has been widely used, and the transformation from EMS to WAMS is extremely difficult; the signal sampling rate of PMU equipment Very high, which leads to high equipment costs. At the same time, the massive data of the wide-area power system is collected in the data center, which puts great pressure on the software and hardware of the data center, and the dynamic analysis of the power system does not require such a high update rate; In addition, due to the limitations of the network structure of the WAMS system, the IEEE C37.118 protocol used, and the PMU terminal equipment, WAMS does not have a downlink channel for information, and cannot realize closed-loop control of the power system. To realize the control function, an additional downlink network channel is required and control response equipment, which increases the complexity of the entire power system control and reduces the reliability of the power system

However, the existing RTU data update speed is too slow, and the PMU update rate can meet the demand, but the massive data brought by the high data update rate brings a heavy data processing burden to the communication and server

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