Smart grid energy-saving optimized comprehensive evaluation method

A smart grid and distribution network technology, applied in forecasting, circuit devices, AC network circuits, etc., can solve problems such as complex node and branch number processing

Inactive Publication Date: 2015-08-05
JIANGYIN FANGCHENG ELECTRICAL AUTOMATION INST CO LTD
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Problems solved by technology

[0004] The current commonly used three-phase power flow calculation can be divided into loop impedance method and forward push-back method. The loop impedance method proposed by S.K Goswami and S.K Basu in 1991 takes the loop current as a variable and forms from the root node of the feeder to each load point. For a loop, according to Kirchhoff’s voltage law, the loop current equation is listed. This method has a strong ability to deal with meshes, but the processing of node and branch numbers is

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[0049] see figure 1 , a smart grid energy-saving optimization comprehensive evaluation method related to the present invention, the steps of the method are:

[0050] Step 1. Input the network parameters of the distribution network into the distribution network management system;

[0051] Step 2. Power flow calculation:

[0052] Step 1, the computer obtains the network parameters of the distribution network from the distribution network management system;

[0053] Step 2. Form the branch set and connected branch set of the distribution network. The specific formation steps are as follows:

[0054] Step 2.1, obtain a node set and an edge set through the network parameters obtained in step 1;

[0055] Step 2.2, set whether the processed flag of all nodes in the node set is False (that is, it has not been processed); initialize the stack, push the root node in the node set into the stack (the node data is obtained from the distribution network management system When the comput...

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Abstract

The invention relates to a smart grid energy-saving optimized comprehensive evaluation method. According to the smart grid energy-saving optimized comprehensive evaluation method, two-layer iteration is adopted to solve load flow problems; according to inner-layer iteration, a forward and backward substitution method is adopted to calculate pure radial network load flows composed of branches; and the outer-layer iteration constantly revises injection current at nodes at two ends of each branch so as to realize overall convergence. The smart grid energy-saving optimized comprehensive evaluation method of the invention is advantageous in energy saving effect.

Description

technical field [0001] The invention relates to a comprehensive evaluation method for energy saving optimization of a smart grid, which is applied in the field of electric power monitoring. Background technique [0002] In the distribution network monitoring and management system, in order to reduce line loss, improve the terminal voltage and asset utilization of the distribution area, provide high-quality power services, and meet customers' higher requirements for power quality, it is necessary to calculate the optimal reactive power compensation position and The minimum compensation amount, reactive power compensation at the best position can achieve the effect of using the minimum compensation amount to obtain better voltage quality and smaller network loss; [0003] In order to achieve the above goals, system modeling, optimization algorithm, power flow calculation, network loss analysis, and graphical interface are required for the distribution station area; the distrib...

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Application Information

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IPC IPC(8): H02J3/18H02J3/16G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06H02J3/16H02J3/18H02J2203/20Y02E40/30Y02E40/70Y04S10/50
Inventor 张建兴
Owner JIANGYIN FANGCHENG ELECTRICAL AUTOMATION INST CO LTD
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