Method of distribution network operation risk valuation based on exponential and logarithmic correction
A technology for operating risk and distribution network, which is applied in the field of correcting distribution network operation risk evaluation, can solve problems such as the inability to reflect the degree of influence of serious indicators, and achieve the effect of reducing differences, overcoming amplification effects, and reducing extreme differences
Inactive Publication Date: 2017-06-30
DONGFANG ELECTRONICS
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However, since the initial values of the index weights are the same, when the methods in the prior art are used to summarize the comprehensive operational risk indicators, the consequences of the most serious indicators will often be submerged, and the final risk assessment results cannot reflect the degree of influence of the most serious indicators
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[0025] The technical scheme of the present invention is described in detail below:
[0026] A method for estimating distribution network operation risk based on exponential logarithm correction, the core of which is to implement the following steps through a computer device:
[0027] (1) Set the weight of each operational risk index, and calculate the average operational risk value according to the weight of the risk index and the risk quantification value. The specific steps are:
[0028] First, set the initial weight ∝’ of each operational risk indicator i ;
[0029] Then, according to the initial weights of all risk indicators ∝’ i and risk quantification value A i Correct each initial weight separately to obtain the corrected weight of each operational risk indicator ∝ i :
[0030]
[0031] In the above formula, n is the number of operational risk indicators, ρ is the equilibrium coefficient, preferably ρ=0.5, and the value range is greater than or equal to 0 and l...
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The invention discloses a method of distribution network operation risk valuation based on exponential and logarithmic correction, comprising the following steps: (1) setting the weight of each operation risk indicator, and calculating the average operation risk value according to the weights and quantized risk values of the risk indicators; (2) finding out the maximum operation risk value, namely, the quantized risk value corresponding to the indicator at highest risk in the operation risk indicators; and (3) using an exponential and logarithmic method to synthesize the average operation risk value and the maximum operation risk value, and calculating out the final operation risk value. The average operation risk value and the maximum operation risk value are synthesized through the exponential and logarithmic method to get the final operation risk value. Thus, the risk evaluation result not only can reflect the influence degree of the most serious indicator, but also can reflect the comprehensive influence of other indicators.
Description
technical field [0001] The invention relates to a method for correcting the risk estimation of distribution network operation. Background technique [0002] The failure of the distribution network is an important factor affecting the quality of power and the reliability of power supply. Only when the safe and stable operation of the distribution network is ensured can the safe and reliable operation of the entire power grid be guaranteed. [0003] Through the risk assessment of the distribution network, the vulnerable points and weak areas of the distribution network can be found in a timely and comprehensive manner, and then defense and improvement measures can be proposed to effectively restrain the occurrence and expansion of accidents. [0004] At present, indicators of distribution network operation risk usually include equipment load rate, 110kV main transformer N-1 pass rate, etc. When calculating the final operation risk value, it is usually necessary to calculate th...
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Login to View More IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q10/06393G06Q50/06
Inventor 潘凯岩谭大帅高贞彦林培明柳水莲
Owner DONGFANG ELECTRONICS