Method for evaluating utilization ratio based on equilibrium state equipment utilization coefficient and load curve
A technology of utilization coefficient and equilibrium state, which is applied in the field of utilization rate evaluation based on equilibrium state equipment utilization coefficient and load curve, can solve the problem of inability to reflect the working state of components, the inability to accurately reflect the use efficiency, and the inability to give accurate measurements And other issues
Inactive Publication Date: 2018-06-29
YUNNAN POWER GRID
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Problems solved by technology
Since the load is constantly changing, the power of the equipment is also constantly changing. The single use of the maximum load to describe the utilization of the components cannot reflect the working status of the components in the main time
The rated capacity is selected and formulated under the guidance of the power grid planning stage. It does not consider the constraints in actual operation, and cannot accurately reflect the efficiency of each device in different operating modes. The components in the network lack each other. Relevance, cannot give an accurate measurement to achieve a certain operating index, and the grid components located between different networks also lack a reasonable method of comparing and judging each other
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[0010] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below.
[0011] 1. Calculation of benchmark value of equipment utilization coefficient
[0012] (1) The concept of balanced utilization status of power distribution system
[0013] The balanced utilization state is a distribution of power flow that satisfies constraints. In this case, the network pursues two goals at the same time:
[0014] 1) Utilize each component equipment as efficiently as possible;
[0015] 2) Utilize all component equipment as evenly as possible.
[0016] In this case, the power passing through each component is called the balanced capacity of the component, and the load rate of each component in the network is called the balanced efficiency of the component, then the product of the rated capacity or limit capacity of the component and the balanced efficiency is the balanced capacity .
[0...
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The invention relates to a method for evaluating the utilization ratio based on an equilibrium state equipment utilization coefficient and a load curve. According to the invention, an utilization coefficient obtained at an equilibrium state is taken as a reference of evaluation, multiple evaluation indexes are used to calculate the equipment utilization coefficient under the premise of calculatingthe fluctuation of the load curve, and evaluation is performed on the equipment utilization ratio of a distribution network. According to the evaluation method, an evaluation reference value based ona grid structure of the distribution network is calculated through various operation constraints. An evaluation value for evaluation is obtained according to a method of using the maximum value, theaverage value, the standard deviation and the average standard deviation ratio so as to describe the operating state of network elements within a period of time. A platform for mutual comparison is provided for different elements and different networks through expansion for the reference value; and the accuracy of evaluating the utilization condition of equipment under different load types is improved through expansion for the evaluation value.
Description
technical field [0001] The invention relates to an evaluation method, in particular to an evaluation method of utilization rate based on equilibrium state equipment utilization coefficient and load curve. Background technique [0002] The power distribution network not only needs to supply power to users safely and reliably, but also meets high requirements for its economy and continuity. With the rapid development and progress of the power grid, people pay more and more attention to the quality and utilization efficiency of the power grid. Scientifically and accurately evaluate the equipment utilization rate of power distribution system, maximize the potential capacity of existing equipment, reduce current investment demand and delay construction investment, improve the quality of power grid development and the economic benefits of power companies, and guide the improvement and safety of power grid structure Economic operation is of great significance. [0003] At present...
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Login to View More IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 张秀钊钱纹王志敏
Owner YUNNAN POWER GRID