Electrical equipment local discharge positioning method and system
A technology for partial discharge and power equipment, applied in the field of partial discharge positioning of power equipment, can solve problems such as system structure change, increase field test workload, etc., and achieve the effects of flexible installation and unloading, high safety, and improved accuracy
Inactive Publication Date: 2015-07-29
GUANGZHOU POWER SUPPLY CO LTD
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[0020] The specific implementation manners of the method and system for locating partial discharge of electrical equipment according to the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] see figure 1 , figure 1 It is a flow chart of a method for locating partial discharge of electric equipment according to an embodiment.
[0022] A method for locating partial discharge of electric equipment, comprising the following steps:
[0023] Step S101: Select one of several wireless sensors as the master clock, and the rest of the wireless sensors as slave clocks, and time-synchronize the master clock and the slave clock; wherein, the wireless sensors are distributed around the measurement position of the power equipment, including A signal coupler, a signal conditioning module, a partial discharge pulse time extraction module and a wireless communication module connected in sequence;
[0024] In step S101, the time synchro...
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The invention relates to an electrical equipment local discharge positioning method and system. The method comprises the following steps of selecting one of a plurality of wireless sensors as a master clock and the other wireless sensors as slave clocks, and synchronizing the time of the master clock and the slave clocks; controlling the master clock to transmit a synchronous measurement instruction, and enabling the slave clocks to synchronously collecting ultrasonic signals generated in an electrical equipment measuring position at the same time with the master clock after receiving the synchronous measurement instruction; obtaining the head wave time of the ultrasonic signals in a wireless mode, which is recorded by a local discharge pulse time extracting module in every wireless sensor, selecting the shortest four head wave times, and according to the four head wave times and the positions of the corresponding wireless sensors determining the local discharge position of electrical equipment. By achieving ultrasonic collection and positioning through the wireless sensors, the electrical equipment local discharge positioning method is low in workload and high in safety.
Description
technical field [0001] The invention relates to the technical field of partial discharge location, in particular to a partial discharge location method and system for power equipment. Background technique [0002] Partial discharge (hereinafter referred to as partial discharge) will be generated before the insulation breakdown of electrical equipment occurs due to insulation defects. Partial discharge is a symptom and manifestation of electrical equipment insulation defects. Detecting the partial discharge of power equipment can detect its internal insulation defects earlier, so that appropriate measures can be taken to prevent its further development from causing accidents. [0003] During the generation and development of defects in power equipment, its degradation state can be represented and reflected by various physical characteristics such as sound, light, electricity, and heat. Currently, the commonly used partial discharge detection methods for power equipment inclu...
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IPC IPC(8): G01R31/08G01R31/12
Inventor 熊俊李光茂杨森杨珏何昊吴晓桂钟少泉郑服利敖昌民刘宇黄展帮
Owner GUANGZHOU POWER SUPPLY CO LTD