Communication method for fast power control in new energy station

Abstract

The invention relates to a communication method for photovoltaic, wind power and other kinds of new energy power stations to control a large number of power generation units to conduct fast power control so as to meet the system primary frequency control similar rapid response requirement. The method is quickly issued to each power generation unit through Ethernet-based multicasts or broadcasts, the power generation units receive without communication confirmation and execution, and then power rapidly comes back; a plant-station fast power control device obtains the adjustment effect by acquiring and calculating plant-station grid supply points so as to form closed-loop control; the plant-station fast power control device achieves the requirement of regular non-real-time information of the several power generation units through communication of each power generation unit TCP. The method aims to solve the problem that current novel energy, particularly photovoltaic power station power regulation communication slowness, causes slow response of a power grid so as to improve the control and adjustment level of a new-energy plant station.

Description

technical field [0001] The invention relates to the field of new energy power generation automation, in particular to an intra-station communication method for fast power regulation of new energy applied in large-scale new energy photovoltaic power plants. Background technique [0002] At present, most regions in my country adopt a large-scale centralized development model for new energy such as wind power and photovoltaics. Each large-scale new energy development area has dozens of new energy stations, and the installed capacity of a single new energy station The capacity is larger. Due to the inherent intermittent characteristics of new energy power generation, large-scale new energy grid integration has brought great challenges to grid operation. In order to ensure the safety and stability of power grid operation under large-scale new energy access, since 2011, the National Standards Committee and State Grid Corporation have promulgated the standards "Q / GDW 617-2011 Techn...

AI Technical Summary

Problems solved by technology

[0009] 1) Solve the contradiction between the high-speed communication requirements of the station-level system and many power generation units and the high-cost and high-performance requirements of related systems

[0010] 2) Solve the problem of how to achieve fast closed-loop control when the multicast fast power control delivery of the fast power control system does not require high-speed backhaul. The closed-loop control is performed by calculating the power value through the current and voltage collection of the grid-connected point, which is fast and accurate

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