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Park energy-network energy optimizing management system based on microgrids and implementing method thereof

An energy management system and energy optimization technology, which is applied in the park energy network energy optimization management system and its realization field, can solve problems such as peak-valley difference between energy supply and demand, economic loss, and inability to fully utilize resources.

Active Publication Date: 2014-02-19
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the isolation of water, electricity, gas, and heating networks among various industries, it cannot solve the peak-valley difference between the supply and demand of various energy sources by itself.
This makes the originally limited resources not fully utilized or wasted, resulting in huge economic losses.

Method used

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  • Park energy-network energy optimizing management system based on microgrids and implementing method thereof
  • Park energy-network energy optimizing management system based on microgrids and implementing method thereof
  • Park energy-network energy optimizing management system based on microgrids and implementing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0203] Coordinated control strategy of micro power supply and energy storage during grid-connected operation:

[0204] The coordinated control strategy of micro power supply and energy storage during grid-connected operation is as follows: figure 2 shown in the figure, formula ①- The expression is as follows:

[0205] a. Determine whether the active power output of the micro-power supply is greater than or equal to the sum of the active power of the load and line loss, and determine whether the reactive power output of the micro-power supply is greater than or equal to the sum of the load and the line loss reactive power; expressed by the following group and formula ① :

[0206] And ①:P W +P PV +P EMT ≥P l1 +P l2 +……+P ln +P loss ;

[0207] Q W +Q PV +Q EMT +Q SVC ≥Q l1 +Q l2 +……+Q ln +Q loss ;

[0208] b. Determine whether the active power output of the micro power supply is equal to the sum of the active power of the load and the line loss; and determine...

Embodiment 2

[0243] Coordinated control strategy of micro power supply and energy storage during isolated grid operation:

[0244] The coordinated control strategy of micro power supply and energy storage during isolated grid operation is as follows: image 3 shown in the figure, solitary ①- The expression of the formula is as follows:

[0245] i. Determine whether the active power output of the micro power supply is greater than or equal to the sum of the active power of the load and the line loss, and determine whether the reactive power output of the micro power supply is greater than or equal to the sum of the load and the line loss reactive power; expressed by the following formula ① :

[0246] Solitary ①:P W +P PV +P EMT ≥P l1 +P l2 +……+P ln +P loss ;

[0247] Q W +Q PV +Q EMT +Q SVC ≥Q l1 +Q l2 +……+Q ln +Q loss ;

[0248] ii. Determine whether the active power output of the micro power supply is equal to the sum of the active power of the load and the line loss, ...

Embodiment 3

[0277] Coordinated control strategy of micro-power supply and energy storage during micro-grid operation mode transition:

[0278] The coordinated control strategy of micro power supply and energy storage when the micro grid is connected to the grid and transferred to the isolated grid is as follows: Figure 4 shown in the figure, formula ①- and figure 2 The same as in respectively with image 3 The formula ⑤~ The same; the coordinated control strategy of micro power supply and energy storage when the micro grid is isolated and connected to the grid is as follows: Figure 5 shown in the figure, formula ①- and image 3 The same in the formula, and ⑤-and respectively with figure 2 in the formula⑤- same.

[0279] In the above logic judgment process, active power and reactive power are separated and judged independently.

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Abstract

The invention relates to a park energy-network energy optimizing management system based on microgrids and an implementing method of the system. The energy optimizing management system is implemented by park energy scheduling and microgrid energy management. The micro power grid management system is in a three-layered structure including a microgrid energy scheduling layer, a microgrid centralized control layer and a microgrid, stored energy and load local control layer. Constraint conditions of the energy optimizing management method are guaranteed by the microgrid centralized control layer. The output of each microgrid or stored energy is determined by a microgrid and stored energy coordination control policy in a microgrid central controller; and an objective function includes three objective function subsets at different grades. Through computing the objective function values at various states by a multi-objective optimizing algorithm based on weight, the defect of randomness and intermittence of the distributed power source is overcome, the complementary problem among multiple microgrids and multiple micro power sources in the microgrid in the park energy network is solved, and optimized utilization of clean energy and maximization of system energy efficiency can be achieved.

Description

technical field [0001] The invention relates to an energy optimization management system and an optimization management method thereof, in particular to an energy optimization management system of a park energy network based on a microgrid and an implementation method thereof. Background technique [0002] The environmental and ecological damage caused by energy shortage and over-exploitation forces people to face the transformation of energy consumption structure again. Natural gas and other primary energy coexist. However, due to the mutual isolation of water, electricity, gas, and heat network industries, it cannot solve the peak-to-valley difference between the supply and demand of various energy sources. This makes the originally limited resources unable to be fully utilized or wasted in vain, resulting in huge economic losses. Therefore, the independent production of the three products of cold, heat and electricity has been transformed into high-tech co-production, n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCY02B70/3241Y04S20/227Y02B70/30
Inventor 刘海涛张佳军苏剑吴鸣季宇
Owner CHINA ELECTRIC POWER RES INST
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