Layered and zoned reactive voltage analysis method based on boundary condition
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A boundary condition, layered and partitioned technology, applied in reactive power compensation, AC network voltage adjustment, etc., can solve the problems of limited reactive power and voltage analysis of the power grid, low efficiency of large power grid analysis, and lack of reactive power and voltage calibration methods. , to achieve the effect of being easy to understand and implement, and improving analysis efficiency
Active Publication Date: 2016-04-13
ELECTRIC POWER RES INST OF EAST INNER MONGOLIA ELECTRIC POWER +1
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[0003] At present, most of the research on reactive power and voltage control focuses on reactive power optimization, while the research o...
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Embodiment 1
[0033] The present invention is a layered and partitioned reactive voltage analysis method based on boundary conditions, such as figure 1 as shown, figure 1 It is a flow chart of the hierarchical partition reactive voltage analysis method based on boundary conditions, and the specific operation steps include:
[0034] Step 1: Hierarchically partition the grid.
[0035] The specific method used in the hierarchical partitioning is: according to different voltage levels, the power grid of the same voltage level is divided into one layer; in the same layer of the power grid, partitions are carried out according to the geographical location and the load power supply range, and the substation is based on which area the power is supplied to In which area it is divided, substations powered by different areas at the same time are allocated to each area according to the size of the power supply load.
[0036] Step 2: Identify the study area and its boundaries.
[0037] The determinat...
Embodiment 2
[0061] The content of the present invention will be further described below by taking the 2015 Inner Mongolia Chifeng Power Grid as an embodiment of the present invention.
[0062] Firstly, the Chifeng power grid is divided into four layers according to 500kV, 220kV, 66kV, and 10kV; for example, the 66kV level power grid is divided into Zhongjing system, Pingzhuang system, Jinshan system, Chifeng system, Jingouliang system, Lindong system, Tianshan system, Taiben system, Xijiao system, Ningcheng system, hot water system, Wudan system, Daban system, Yuanbaoshan system, Xinhui system, Tongdu system , Chengdong system has 17 areas in total.
[0063] The research area is determined to be the 66kV Jinshan system, and the wiring diagram of the power grid in the Jinshan area of Chifeng, Inner Mongolia is as follows figure 2 shown.
[0064] The boundary of this area is determined to be 220kV Jinshan Substation, and the boundary conditions include Jinshan Substation 66kV side volt...
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Abstract
The invention belongs to the technical field of reactive voltage control of a power grid, in particular relates to a layered and zoned reactive voltage analysis method based on a boundary condition. The layered and zoned reactive voltage analysis method comprises the following steps of making the power grid layered and zoned; determining a researched zone and a boundary thereof; inputting maximum daily load, minimum daily load, output of a power generator, the boundary condition, a reactive compensation configuration condition and a limit value of a regional power grid; carrying out power flow calculation, adjusting reactive compensation capacity, and adjusting the boundary of the regional power grid to the boundary condition; judging whether an out-of-limit situation exists in the voltage in a region or not; and judging whether a power factor of each main transformer conforms to the stipulation of the limit value or not. According to the layered and zoned reactive voltage analysis method, reactive voltage correction and reactive voltage optimization can be fulfilled, the reactive voltage analysis efficiency of a large-sized power grid can be substantially improved, focused analysis can be conducted with regard to a local power grid, and the layered and zoned reactive voltage analysis method is suitably used for situations with relatively complete data of the local power grid and insufficient data of a large power grid; and the layered and zoned reactive voltage analysis method is easy to understand and implement, is proximate to actual running of the power grid, and is suitably for on-line application.
Description
technical field [0001] The invention belongs to the technical field of grid reactive voltage control, and in particular relates to a layered and partitioned reactive voltage analysis method based on boundary conditions. Background technique [0002] In the current power system, with the increase of load and the continuous development of various new projects, the operation of the power grid is becoming more and more complicated, and the control of reactive power and voltage is facing various new challenges. In order to ensure the quality of voltage operation, it is necessary to track the changes in the reactive power and voltage of the power grid, carry out timely analysis of the reactive power and voltage of the power grid, and put forward practical decision-making suggestions. Reactive power and voltage analysis has become an indispensable work in the current power grid construction and maintenance process, which is of great significance to the safety, stability and economi...
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