Considering the power grid stability calculation data construction method below 220kv

A stable calculation, 220kv technology, applied in the direction of electrical digital data processing, calculation, special data processing applications, etc., can solve problems such as not considering the influence of power grid transient characteristics, to avoid deviation of calculation results, enhance practicability, and improve accuracy Effect

Active Publication Date: 2017-03-08
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0006] The purpose of the present invention is to provide a power grid stability calculation data construction method considering the power supply below 220kV, so that the power grid stability calculation and analysis results are more in line with the power grid. run actual

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  • Considering the power grid stability calculation data construction method below 220kv
  • Considering the power grid stability calculation data construction method below 220kv
  • Considering the power grid stability calculation data construction method below 220kv

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Embodiment Construction

[0045] The method of the invention figure 1 The regions and main connection lines of a certain province A power grid are shown as examples for illustration.

[0046] see figure 1 , Province A is composed of 5 regional power grids. Construct the power grid of Province A according to the following steps, considering the stable calculation data of the power supply below 220kV:

[0047] 1. Count the total active power of the negative load of the regional grid (i is the regional grid number, P L Is the load in area i, i=1,2,3,4,5): The load distribution of province A is shown in Table 1. The load of province A is distributed in area 1 and area 4. These two areas The negative loads of all 220kV substations belonging to the power grid are connected to the 110kV bus side of the 220kV substation. As shown in Table 1, there are 7 110kV buses connected to the negative load in 1 area, 2 in 4 areas, 2, 3, 5 in Province A There is no load in the area. The negative load active power P of all ...

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Abstract

The invention discloses a power grid stability calculation data construction method considering power supplies below 220kV. The method comprises the following steps that 1. statistics is performed on regional power grid negative load total active power (which is expressed in the specification); 2. statistics is performed on regional power grid grid-connected set total active power output (which is expressed in the specification); 3. percentage K of networking load of the i region is calculated; 4. regional power grid stability calculation data of which K is less than or equal to 16% are constructed; 5. regional power grid stability calculation data of which K is greater than 16% are constructed; and 6, partial stability calculation data in the power grid of the regions of which K is greater than 16% are constructed again. Percentage K of the networking load of each region is calculated to distinguish the detail level of power grid stability calculation data construction of each region of the power grid so that the power grid stability calculation data meeting the actual situation further are constructed and the dynamic characteristics of the grid-connected power supplies of the power grid below 220kV of the system after transient disturbance can be better described.

Description

Technical field [0001] The invention belongs to the field of power system stability simulation technology (not a simulation calculation method, but should belong to the data support of simulation calculation), and specifically relates to a method for constructing power grid stability calculation data considering power sources below 220kV. Background technique [0002] Power system stability simulation calculation is not only a basic tool for power system planning and construction, dynamic characteristics analysis and safety and stability control, but also a basic basis for power production dispatching departments to guide the operation of the power grid. The power grid stability calculation tool currently used for dispatching at all levels of my country's power grid is the Power System Analysis Software Package (PSASP) developed by the China Electric Power Research Institute. The accuracy of stable calculation and analysis data is the basis and prerequisite for the true and relia...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06F19/00G06F9/455
Inventor 宋军英李欣然蔡丝琪胡臻
Owner STATE GRID CORP OF CHINA
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