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Microgrid energy management system and method for controlling operation of microgrid

An energy management system and microgrid technology, applied in the field of controlling microgrid operations, can solve problems such as heavy computing burdens

Active Publication Date: 2019-08-06
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the heavy computational burden, it is usually arranged to consider only the simplified optimization of the power balance of the microgrid, rather than the more specific operational constraints provided by the power flow analysis

Method used

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  • Microgrid energy management system and method for controlling operation of microgrid
  • Microgrid energy management system and method for controlling operation of microgrid
  • Microgrid energy management system and method for controlling operation of microgrid

Examples

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Embodiment Construction

[0016] According to exemplary embodiments described herein, there is provided a microgrid energy management system (EMS) that generates an optimal dispatch decision while taking various factors into consideration for a specific time period. The microgrid EMS coordinates control actions among various controllable devices within the microgrid over multiple time intervals to achieve an overall optimization objective function. For example, a microgrid EMS can use renewable energy resource generation and load forecast information for future time periods to maximize renewable energy resource utilization and reduce fossil fuel dependence. Furthermore, energy storage charging / discharging operations can be optimally scheduled in multiple time intervals, so that the electrical energy storage devices included in the microgrid can store low-priced energy during light-load periods, and store energy during heavy-load or high-priced energy periods. Deliver energy.

[0017] The microgrid EMS...

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PUM

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Abstract

The microgrid includes a plurality of distributed energy resources, such as controllable distributed generators (104, 106, 108, 110, 112) and electrical energy storage devices (114). A method of controlling operation of a microgrid, comprising: periodically updating an energy resource schedule for the microgrid, including controllable on / off states of distributed generators (104, 106, 108, 110, 112) and The state and rate of charge / discharge of the electrical energy storage device (114), and based at least in part on renewable energy generation and load forecasting for the microgrid (200), meet a first control objective in a defined time window. The method further comprises periodically determining a power setpoint for the controllable distributed energy resource (104, 106, 108, 110, 112), which satisfies a second control objective for the current time interval within a defined time window, The second control objective is a function of at least distributed energy resource scheduling for the microgrid (210).

Description

technical field [0001] This application relates to microgrids, and more particularly to controlling the operation of microgrids. Background technique [0002] A microgrid is a semi-autonomous grouping of distributed energy resources (distributed generation and storage) and loads within a local area. This load can be a utility "customer", a grouping of several sites, or a distributed site operating in a coordinated fashion. Distributed generators can include reciprocating engine-driven generators, microturbines, fuel cells, photovoltaic / solar or other small-scale renewable generators. All controllable distributed energy resources and loads are interconnected in a manner that enables devices to perform specific microgrid control functions. For example, the energy balance of the system must be maintained through scheduling, and non-critical loads may be shortened or curtailed during times of energy shortage or high operating costs. While capable of operating independently of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/00Y02P80/14G05B13/02
Inventor 杨芳冯先勇李朝王振远A·奥达洛夫
Owner HITACHI ENERGY SWITZERLAND AG
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