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Method for coordinated optimization control of energy of multi-modal micro-grids

A technology of optimal control and energy coordination, applied in photovoltaic power generation, wind power generation, electrical components, etc., can solve the problems of optimal regulation, fluctuation and lack of energy at all levels of power grids, and achieve the effect of reducing the impact of fluctuations

Inactive Publication Date: 2017-03-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the problem that a large number of multi-type distributed power sources are connected to various levels of power grids, and fluctuations occur, and the problem of lack of optimal regulation of the energy of all levels of power grids

Method used

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  • Method for coordinated optimization control of energy of multi-modal micro-grids
  • Method for coordinated optimization control of energy of multi-modal micro-grids

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Experimental program
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specific Embodiment approach 1

[0020] Specific implementation mode one: refer to figure 1 with figure 2 Specifically explaining this embodiment, the multi-mode microgrid energy coordination optimization control method described in this embodiment includes the following steps:

[0021] Step 1. Perform power generation forecast and load forecast based on various types of distributed power generation historical data, various load historical data, energy storage state of charge and local weather information;

[0022] Step 2. Obtain the upper-level power output plan and power grid operation mode through the power grid dispatching system or the integrated deployment system;

[0023] Step 3. According to the power generation forecast and load forecast in step 1 and the grid operation mode in step 2, determine the mode and operation mode of the micro-grid at all levels;

[0024] Step 4. Obtain the energy dispatchable capacity of micro-grids at all levels according to the obtained micro-grid modes and operation m...

specific Embodiment approach 2

[0035] Embodiment 2: This embodiment is to further explain the multi-mode micro-grid energy coordination optimization control method described in Embodiment 1. In this embodiment, the micro-grids at all levels in step 3 include substation-level micro-grids, Medium-voltage feeder-level microgrid and low-voltage station-level microgrid.

specific Embodiment approach 3

[0036] Specific implementation mode three: this implementation mode is to further explain the multi-mode microgrid energy coordination and optimization control method described in specific implementation mode one. In this embodiment mode, in step three, according to the power generation forecast and load forecast in step one And the power grid operation mode in step 2. The details of determining the modes and operation modes of micro-grids at all levels are as follows:

[0037] When the power grid fails and there is an island operation or a power outage area, some micro-grids need to operate off-grid. At this time, it is necessary to ensure the power supply of important loads according to the state of energy storage nuclear power and distributed power generation capacity;

[0038] When the grid is in an abnormal state, that is, the load of the entire grid is normally powered, but the grid voltage exceeds the limit, the power is overloaded, the power quality is unqualified, and ...

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Abstract

The invention discloses a method for coordinated optimization control of energy of multi-modal micro-grids and relates to the field of power grid energy control. The method solves a problem that a large amount of multiple types of distributed power supplies are connected to power grids at all levels to have fluctuations and lack optimization control of the energy of the power grids at all levels. The micro-grids in three modes all have diversity load and other disturbances sources, such as wind power generation, solar photovoltaic power generation and electric vehicles, so that the power fluctuations in various forms can occur at any time and even the distributed power supply output changes intermittently, a coordinated optimization control strategy of local balance on the spot, regional mutual supply and overall absorptive decomposition which are linked with a substation level, a feeder level and an area level is adopted, the controllable distributed power supply output, the controllable load energy power and charging and discharging of an energy storing device are adjusted orderly, and the effects of reasonable energy distribution, multivariate complement and comprehensive utilization are realized finally. The method is used for power grid energy control.

Description

technical field [0001] The invention relates to a multi-mode micro-grid energy coordination control method, especially a distribution network containing various types of distributed power sources with different voltage levels, energy storage and diverse loads, in order to reduce the impact of fluctuations on the power grid and maximize the consumption of renewable energy For energy generation, distributed power sources form multi-mode microgrids in different forms, and manage and control energy flow. Background technique [0002] Under the current huge challenge of global energy conservation, emission reduction and energy security, we will vigorously develop distributed generation methods (Distributed Generations, DG) including photovoltaics, wind power, biomass, and fuel cells. As a useful supplement to centralized power generation, it can not only reduce power loss during power transmission and the cost of upgrading the distribution network, but also bring users lower cost...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/32
CPCH02J3/00H02J3/003H02J3/005H02J3/32Y02E10/56Y02E10/76
Inventor 鲁文李卫星杜红卫晁璞璞
Owner HARBIN INST OF TECH
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