Virtual power plant source network cooperated energy management system for photovoltaic multi-stage access

Abstract

The invention provides a virtual power plant source network cooperated energy management system for photovoltaic multi-stage access. The virtual power plant source network cooperated energy managementsystem comprises a process layer, a terminal layer and a main station layer, wherein the process layer comprises a primary device which is arranged in a distributed energy power station and used forcompleting analog quantity sampling, on-off quantity input and output and execution of operation control commands, the terminal layer comprises all measurement and control terminals provided with process layer interfaces and completing collection of operating information of the process layer and issuing of control commands, and the main station layer completing various advanced applications and anoverall scheduling algorithm on the basis that collection of the operating information of the terminal layer is completed, issuing global optimization control commands to the terminal layer and finally completing control functions of a virtual power plant. The virtual power plant source network cooperated energy management system adopts an energy management technology, controllable resource and power grid cooperated source network integrated control and scheduling under different operating main bodies are achieved by adopting a comprehensive technical and commercial integrated virtual power plant regulation technology under the local consumption conditions of high-permeability batch-type new energy resources.

Description

technical field [0001] The invention belongs to the technical field of power grid management, and in particular relates to a virtual power plant source-network collaborative energy management system for photovoltaic multi-level access. Background technique [0002] Distributed power generation, especially the large-scale access and application of renewable energy, is a fundamental feature of future grid development. In order to deal with the problem of output instability, the current large-scale access to new energy mostly adopts the method of centralized grid-connection of transmission grid dedicated lines. Although this new energy access method has little impact on power grid operation and management from the perspective of safety and reliability in the initial stage of construction, it will easily lead to a mismatch between new energy development and the market. With the increase in the proportion of new energy installed capacity in local power installed capacity. The op...

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Problems solved by technology

However, due to the connection of electrical topology, the management and operation of voltage, power quality and frequent reverse power flow caused by the intermittent characteristics of new energy output will be more complicated

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