Microgrid energy management system capable of realizing load management

An energy management system and load management technology, applied in the field of microgrid energy management systems, can solve the problems of uncommon application of coordination functions and advanced algorithms, less research and implementation of energy management systems, etc., to improve stability and security, Good openness and compatibility, good plug and play effect

Inactive Publication Date: 2016-07-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] It can be seen from the research situation at home and abroad that most of the micro-grid demonstration projects that have been built around the world adopt centralized control mode, which has mature technology, low equipment cost, and is easy to implement and maintain. There are few researches and implementations of energy management systems for power grid characteristics, and most of them implement data collection and system monitoring, and the application of coordination functions and advanced algorithms is uncommon

Method used

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  • Microgrid energy management system capable of realizing load management
  • Microgrid energy management system capable of realizing load management
  • Microgrid energy management system capable of realizing load management

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Embodiment 1

[0030] See figure 1 , figure 1 It is a schematic diagram of a microgrid structure and an energy management system for realizing load management disclosed in the present invention; figure 1 As shown, the microgrid includes distributed power sources, energy storage devices, interruptible loads, non-interruptible loads, and shiftable loads. The microgrid connects each unit through a 0.4kv voltage level busbar, and a 0.4kv / 10kv transformer is connected to the large grid. . The distributed power supply is connected to the common feeder through the inverter device and the switch, the energy storage device is connected to the common feeder through the power adjustment device and the switch, and the interruptible load, the non-interruptible load and the translational load are all connected to the common feeder through the switch. for individual control. Interruptible loads include air conditioners, non-important lighting, etc., non-interruptible loads include important lighting, re...

Embodiment 2

[0044] This embodiment provides an optimization algorithm for a non-cooperative game-based microgrid energy management system, including the following steps:

[0045] S1. The data monitoring unit collects the meteorological data and load information data of the microgrid. The meteorological data of the microgrid includes the temperature, light intensity, and wind speed of the next day, and the load information data includes demand load data and uninterruptible load data. and load information data as the input of microgrid energy management system.

[0046] S2. According to the temperature, light intensity and wind speed, and the photovoltaic array and fan model, calculate the upper limit of the allowable output of the photovoltaic array and the upper limit of the allowable output of the fan under the wind speed under the temperature and light intensity collected in step S1 .

[0047] S3. Taking the power generation cost function of the microgrid as the objective function, the...

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Abstract

The invention discloses a microgrid energy management system capable of realizing load management. The energy management system comprises a man-machine interaction module, a prediction module, a system analysis module, a dispatching and control module, and a system management module. The system performs collection and monitoring on information of the output power of a distributed power generation unit (including a wind turbine generator, a photovoltaic array and a diesel engine set), the charging-discharging states of a storage battery, the load power, the electric energy quality information of unit nodes, and the like, then carries out data analysis and processing under the condition of satisfying electrical characteristic constraint conditions of operating conditions and physical equipment, formulates a corresponding optimal control strategy according to the current microgrid operating condition and external application requests, coordinates and manages the operations of the distributed power supply, the load and other modules in the microgrid system, optimizes the energy flow and utilization of the microgrid system, outputs by using renewable resources, supplies electric energy capable of satisfying the required quality to user load at the lowest operating cost, and realizes the system optimization and dispatching.

Description

technical field [0001] The invention belongs to the technical field of electric power dispatching and management, and in particular relates to a microgrid energy management system for realizing load management. Background technique [0002] In the context of excessive consumption of traditional fossil energy and increasingly severe environmental problems, renewable new clean energy is becoming the key development direction of the global energy structure. With the continuous increase of power demand, the large power grid with centralized power supply as the main body shows more and more disadvantages: serious pollution, difficult operation, high upgrade cost, and low security performance after being attacked (such as snow disaster, line fault light) , The cost of erection in remote areas is high. Distributed power generation uses clean energy with less pollution and high utilization rate. In addition, it also has the effect of peak-shaving and valley-filling on large power g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/14H02J3/32H02J13/00
CPCH02J3/003H02J3/14H02J3/32H02J3/382H02J13/00001H02J13/0096H02J2203/20H02J2310/64Y02B70/3225Y02B90/20Y02E10/56Y02E10/76Y02E40/10Y04S20/12Y04S20/222
Inventor 曾君李晨迪陈渊睿刘俊峰
Owner SOUTH CHINA UNIV OF TECH
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