Control cabinet and humidity early warning method and device thereof
A technology of early warning devices and control cabinets, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems affecting operation and safety, damage, and local electric field intensity increase
Active Publication Date: 2020-01-14
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
View PDF41 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the ambient humidity in the control cabinet exceeds 65% RH or higher, the humid air will cause varying degrees of damage to the electrical equipment in the control cabinet, affecting its normal operation and safety
When high-voltage electrical equipment operates in an environment with a humidity exceeding 70% RH for a long time, it may cause the surface of the solid insulation to continuously absorb moisture and form a water film, and the ions contained in the water will move along the surface of the insulation in the electric field. And form accumulation near the electrode, so that the local electric field strength increases, discharge occurs, and causes the risk of reduced flashover voltage along the surface
[0003] In order to protect the humidity of the operating environment of the electrical equipment in the control cabinet from exceeding the standard, the traditional monitoring system monitors the internal humidity of the control cabinet. However, the traditional monitoring system only alarms when the humidity in the control cabinet exceeds 65% RH, and cannot reach the limit. Early warning is issued before, that is, it cannot have the effect of early warning of potential safety hazards in equipment operation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0019] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a control cabinet and a humidity early warning method and device thereof. The humidity early warning method of the control cabinet comprises the steps of obtaining a first humidity change rate in a preset humidity range, wherein the first humidity change rate is the change rate of the internal humidity of the control cabinet; detecting whether the first humidity change rate is greater than or equal to zero or not; and when the first humidity change rate is greater than or equal to zero, sending an early warning signal to a monitoring system. The humidity in the controlcabinet is within the preset humidity range, and the first humidity change rate is greater than or equal to zero, so that it is indicated that the humidity increase in the control cabinet has a forward increase trend, namely, the humidity in the control cabinet has a trend of exceeding the preset humidity range, and an early warning signal is sent to the monitoring system, thereby achieving an effect of early warning on potential safety hazards in equipment operation.
Description
technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a control cabinet and a humidity early warning method and device thereof. Background technique [0002] With the advancement of science and technology and the limitation of human resources, more and more substations adopt unattended operation and management mode. Many electrical equipment needs to operate under specific environmental conditions. For example, the humidity of the electrical equipment in the control cabinet should be controlled at about 45%-55%RH (Relative Humidity, relative humidity). When the ambient humidity in the control cabinet exceeds 65% RH or higher, the humid air will cause varying degrees of damage to the electrical equipment in the control cabinet, affecting its normal operation and safety. When high-voltage electrical equipment operates in an environment with a humidity exceeding 70% RH for a long time, it may cause the surface of the soli...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01N33/00
CPCG01N33/0063
Inventor 易慧潘雄李小强潘晓柏江浩田
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD