Integrated energy management system and management strategy based on cloud platform

Abstract

The invention discloses a comprehensive energy management system based on a cloud platform. The comprehensive energy management system comprises the cloud platform, a photovoltaic power generation subsystem, an energy storage battery subsystem and a user load, wherein the photovoltaic power generation subsystem comprises a photovoltaic power generation assembly and a photovoltaic inverter of the photovoltaic power generation assembly is connected with the user load. The system further comprises a data acquisition and receiving terminal, and the data acquisition and receiving terminal is in wireless transmission with the cloud platform. The energy storage battery subsystem comprises an energy storage battery which is connected with a bidirectional three-phase inverter, and further comprisesa BMS for collecting data information of the energy storage battery. The BMS is in wireless transmission with the cloud platform. The cloud platform can receive the data in the system, analyze the data in the system and feed an analysis result back to the system. A final weight value is obtained through combination of an analytic hierarchy process and an entropy weight method, a plurality of indexes can be normalized, an optimal energy flow scheme is screened out through normalized comprehensive indexes, and the uniqueness problem of the microgrid energy flow scheme is well solved through thedouble-layer weighting method.

Description

technical field [0001] The invention belongs to the technical field of micro-grid target optimization systems, and specifically relates to a cloud platform-based comprehensive energy management system, and also relates to a cloud platform-based comprehensive energy management strategy. Background technique [0002] Microgrid is a system composed of load, energy storage system and micro power supply. my country's current development has many requirements for power consumption, such as decentralization and flexibility, and the country vigorously advocates energy conservation and emission reduction, and encourages the use of green energy. Compared with the traditional large power grid, the microgrid has the advantages of various forms of energy utilization, decentralization, strong flexibility, and high reliability of power supply. It is an important development direction. At present, the control method of microgrid is mainly hierarchical control technology, that is, a central c...

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Problems solved by technology

The contradiction is reflected in the fact that the three indicators affected by the energy flow scheme of the microgrid are often not optimal at the same time, and it may be necessary to sacrifice a certain indicator to achieve the optimum of the other two indicators; the complexity is reflected in the multiple microgrids. When performing normalized analysis of the objective function, only using a certain algorithm will easily make the result too one-sided, so that the optimal solution cannot be obtained; the uniqueness is reflected in the fact that only one energy flow scheme can be used in each period of time when the microgrid is running. The power supply is stable, and the energy flow mode cannot be adjusted frequently. It is necessary to select the optimal solution from a variety of different solutions with certain criteria

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