Device and method for qualitatively judging and indicating voltage of tubular bus of open-type transformer substation

Abstract

The invention discloses a device and a method for qualitatively judging and indicating the voltage of a tubular bus of an open-type substation. The device comprises a power supply module, a voltage detection module, a display module and a protection module, the power module is used for supplying power to the device; the voltage detection module is used for collecting voltage data of the tubular bus and performing analog-to-digital conversion on a voltage signal, and completing detection of different states of the voltage of the tubular bus and signal output; the display module is used for receiving a signal of the voltage detection module and lightening indicator lamps with different colors or different colors of the same indicator lamp so as to qualitatively indicate the voltage of the tubular bus; and the protection module is used for protecting normal operation of the three modules. The device is used for qualitatively judging and indicating the voltage of the tubular bus of the open-type substation, so that the problem that whether the running state and safety measures of the tubular bus of the open-type substation are completely detached or not cannot be intuitively checked on site is solved, and the running state of the high-voltage tubular bus of the open-type substation is more reliably, intuitively and safely judged.

Description

technical field [0001] The invention belongs to the technical field of electric power system voltage discrimination, and in particular relates to a qualitative discrimination indication device and method for the voltage of an open-type substation tubular busbar. Background technique [0002] The open-type substation tubular busbar is installed outdoors, and the environmental conditions are relatively harsh. Under the influence of electricity, heat, and machinery during operation, and under the influence of the natural environment (air pressure, temperature, humidity, pollution and natural disasters, etc.), it will cause tubular busbars. The insulation of high-voltage busbars and their insulators to ground is reduced, so the power sector needs to frequently repair open substations. The existing open-type substation can only view the voltage data of the tubular busbar quantitatively measured by the voltage transformer in the running state and the maintenance grounding state th...

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Problems solved by technology

[0002] The open-type substation tubular busbar is installed outdoors, and the environmental conditions are relatively harsh. During operation, it is subjected to the action of electricity, heat, and machinery, and under the influence of the natural environment (air pressure, temperature, humidity, pollution, and natural disasters, etc.), it will cause tubular The insulation of the high-voltage busbar and its insulators to the ground is reduced. Therefore, the power sector needs to frequently overhaul the open substation

Existing open-type substations can only view the voltage data of the tubular bus quantitatively measured by the voltage transformer in the running state and the grounding state through the system background, but cannot measure the voltage of the tubular bus in the standby state (outage and ungrounded), and then It is impossible to judge whether the tubular busbar is in the standby state or whether all grounding safety measures have been removed, and it is also impossible to visually and qualitatively judge the voltage of the tubular busbar outside the substation (that is, the rated voltage in the operating state, the induced voltage in the standby state, and the zero voltage in the maintenance state). During the power outage operation, the operator needs to carefully inspect the equipment with the naked eye to confirm whether the grounding safety measures are well grounded or have been completely removed. The workload is heavy, time-consuming and unreliable

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