Capacitive equipment insulation state real-time on-line monitoring method

An insulation state and capacitive technology, which can be used in the construction of test ships and the test of dielectric strength. sexual effect

Active Publication Date: 2012-04-25
JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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Problems solved by technology

However, the operation effect of the safety operation monitoring system that has been actually put into operation in the early stage is not satisfactory, and the expected economic and social benefits have not been achieved.
According to literature statistics, among the 157 on-line monitoring systems surveyed nationwide, only 15% can operate normally, and 51% can no longer be used normally or are in a paralyzed stat

Method used

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  • Capacitive equipment insulation state real-time on-line monitoring method
  • Capacitive equipment insulation state real-time on-line monitoring method
  • Capacitive equipment insulation state real-time on-line monitoring method

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] The real-time online monitoring method for the insulation state of capacitive equipment of the present invention is specifically implemented according to the following steps:

[0030] Step 1: Since one of the main parameters reflecting the insulation performance of capacitive equipment is the dielectric loss factor, the relative comparison method is used in this method to calculate the dielectric loss factor. This calculation requires the secondary final screen current of several capacitive devices Sampling, and then calculate and analyze the collected data through the host computer.

[0031] The data acquisition block diagram is as follows figure 1 , in order to ensure the stability and safety of the system design, the hardware implementation of this method includes a self-test circuit to detect the overall hardware status, and the d...

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Abstract

The invention discloses a capacitive equipment insulation state real-time on-line monitoring method. On the basis that various types of capacitive equipment are monitored online, data acquired by an on-site on-line monitoring terminal is accurately analyzed and treated through upper-computer expert software, each parameter reflecting the equipment state is displayed visually on an expert software picture in the modes of diagrams, data and curves, alarms are sent out to operators on duty in three modes in time when an equipment failure is detected, and the instantaneity, the accuracy, the stability, the reliability and the timeliness of on-line monitoring are improved. The problems of large labor intensity, long test cycle, poor defect detection timeliness, influence on power supply reliability and the like are avoided, and power failure, power supply abnormalities and other phenomena caused by capacitive equipment insulation in a transformer substation are reduced.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of capacitive equipment, and in particular relates to a method for real-time on-line monitoring of the insulation state of capacitive equipment. Background technique [0002] Capacitive equipment mainly includes current transformer (TA), coupling capacitor (OY), capacitive voltage transformer (CVT), lightning arrester, etc., which are important power transmission and transformation equipment. Whether the insulation state is good or not is directly related to the normal operation of the entire substation, and even endangers the safety of other equipment and people. The state-of-the-art maintenance adopted in recent years has gradually made up for the lack of preventive maintenance, and jointly improved the inspection and maintenance of power system equipment. Condition-based maintenance can save a lot of manpower and material resources, prolong the service life of equipment, and increas...

Claims

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Application Information

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IPC IPC(8): G01R31/16
Inventor 孔令明肖云东刘娟刘锦英李斌刘宗杰付涛阳
Owner JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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