Sphere gap discharge voltage detection method
A discharge voltage and detection method technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the ball gap discharge voltage cannot be detected, the relationship between atmospheric conditions and air gap discharge voltage cannot be accurately established, etc. question
Inactive Publication Date: 2014-03-26
SOUTH CHINA UNIV OF TECH +1
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However, the relationship between atmospheric parameters and discharge voltage is multidimensional and non-linear. Traditional methods cannot accurately establish the relationship between atmospheric conditions and air gap discharge voltage, and cannot accurately detect the discharge voltage of the ball gap online in real time.
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[0016] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0017] Such as figure 1 Shown is a schematic flow diagram of a ball gap discharge voltage detection method of this method in an embodiment, including model training and discharge voltage detection process;
[0018] The model training process includes the following steps:
[0019] S11. Obtain training parameters of the detection site as training samples, and establish a training sample library, wherein the training parameters include atmospheric parameters and corresponding ball gap discharge voltages;
[0020] The artificial neural network is a type of calculation model established by simulating the human brain nervous system from the perspective of microstructure and function. It has the ability to simulate part of the image thinking ability of human beings, and is suitabl...
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The invention provides a sphere gap discharge voltage detection method. The method comprises the following steps of obtaining training parameters of a detection place to be used as training samples, setting up a training sample bank, wherein the training parameters comprise atmospheric parameters and corresponding sphere gap discharge voltage, carrying out normalization pretreatment on the training samples, utilizing the particle swarm optimization algorithm for training a weight and a threshold value of the BP neural network, setting up a PSO-BP neural network model detecting the sphere gap discharge voltage according to the training results, receiving the atmospheric parameters of the discharge voltage to be detected, carrying out the normalization pretreatment on the atmospheric parameters, inputting the pretreated atmospheric parameters of the discharge voltage to be detected into the PSO-BP neural network model, carrying out anti-normalization according to the output results of the PSO-BP neural network model, and obtaining the detected discharge voltage. The detection method can detect the sphere gap discharge voltage fast and accurately.
Description
technical field [0001] The invention relates to the technical field of high voltage and insulation, in particular to a ball gap discharge voltage detection method. Background technique [0002] The external insulation medium of high-voltage electrical equipment such as overhead transmission lines, power transmission and transformation equipment, and substation busbars in the power system is mostly acted by air, and the discharge voltage of the air gap is one of the important factors that determine the external insulation level. According to the discharge theory, factors such as atmospheric temperature, humidity, and pressure will affect the density of the air, impact ionization, mean free path, and adsorption process, resulting in changes in the discharge voltage. A lot of research has been done on the influence of atmospheric conditions on the discharge voltage at home and abroad, but most of the tests are completed under laboratory conditions. The invention is based on a ...
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IPC IPC(8): G06F17/50
Inventor 牛海清张耿斌罗新刘毅刚蚁泽沛
Owner SOUTH CHINA UNIV OF TECH