Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for determining alarm temperature rise threshold of electric equipment

A technology of power equipment and temperature rise, applied in the field of power systems, can solve problems such as temperature or temperature rise is not fixed, false alarms, etc.

Active Publication Date: 2021-06-18
SIEMENS POWER AUTOMATION
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the temperature or temperature rise of the switchgear under different loads is not fixed, a unified maximum allowable heating temperature and allowable temperature rise are used to judge whether the contact point is faulty, and then alarm, there may be false alarms

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for determining alarm temperature rise threshold of electric equipment
  • Method and device for determining alarm temperature rise threshold of electric equipment
  • Method and device for determining alarm temperature rise threshold of electric equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] This embodiment provides a method for determining the alarm temperature rise threshold of the switchgear, and the execution subject is a device for determining the alarm temperature rise threshold of the switchgear. The device can be integrated in a temperature measuring sensor, a computer or a relay, or can be set separately, which will not be repeated here.

[0063] Such as figure 1 As shown, is a schematic flow chart of the method for determining the alarm temperature rise threshold of the switchgear according to this embodiment. The method includes:

[0064] Step 101, obtain the rated current and current primary current of a switch cabinet.

[0065] The rated current refers to the current when the electrical equipment operates at the rated voltage and at the rated power. It can also be defined as the current that electrical equipment can work continuously for a long time under rated environmental conditions (ambient temperature, sunshine, altitude, installation c...

Embodiment 2

[0075] This embodiment makes further supplementary descriptions of the method for determining the alarm temperature rise threshold of the switchgear in the first embodiment.

[0076] Such as figure 2 As shown, is a schematic flow chart of the method for determining the alarm temperature rise threshold of the switchgear according to this embodiment. The method includes:

[0077] Step 201, obtain the rated current and current primary current of a switchgear.

[0078] This step 201 is consistent with step 101, and will not be repeated here.

[0079] Step 202: Determine the current alarm temperature rise threshold of the switchgear according to the rated current, the primary current, and the preset standard alarm threshold.

[0080] The step 202 is consistent with the step 102, and will not be repeated here.

[0081] Step 203, obtaining a stable temperature rise of a contact point of the switch cabinet.

[0082] The stable temperature rise may be the stable temperature rise ...

Embodiment 3

[0118] This embodiment provides a device for determining the alarm temperature rise threshold of the switchgear, so as to implement a method for determining the alarm temperature rise threshold of the switchgear in the embodiment.

[0119] Such as Figure 3A Shown is a schematic structural diagram of the device for determining the alarm temperature rise threshold of the switchgear according to this embodiment. The device includes a first acquiring unit 301 and a determining unit 302 .

[0120] Among them, the first acquisition unit 301 is used to acquire the rated current and the current primary current of a switch cabinet; the determination unit 302 determines the current alarm temperature rise threshold of the switch cabinet according to the rated current, the primary current and the preset standard alarm threshold .

[0121] Optionally, the determination unit is specifically used for:

[0122] Determine the current alarm temperature rise threshold ΔK according to the fol...

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

No PUM Login to View More

Abstract

The present invention relates to a method and device for determining the alarm temperature rise threshold of electric equipment. The method includes: obtaining the rated current and current primary current of an electric equipment; and alarming according to the rated current, the primary current and preset standards The threshold value is used to determine the current alarm temperature rise threshold of the electrical equipment. The current alarm temperature rise threshold is determined by obtaining the primary current of the power equipment, so that not only can the alarm temperature rise threshold be determined in real time according to different loads, avoid false alarms, but also avoid contact points that have failed but have not been found The situation ensures the life of the power equipment and the personal safety of the staff.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a method and a device for determining an alarm temperature rise threshold of power equipment. Background technique [0002] The switchgear is an important power transmission and distribution device in the power system, so it is necessary to monitor the operation of the switchgear in real time. Switchgear usually has various contact points, such as the position where the plum blossom contact contacts the static contact, the position where the copper bar connects to external equipment, etc. When the current flows through the contact point, the contact point will heat up, so the national standard specifies the contact point The maximum allowable heating temperature and the maximum allowable temperature rise of the point. Due to factors such as manufacturing, installation, transportation or long-term operation, the contact point may have problems such as contact oxidation, deformation a...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01K13/00
Inventor 付俊华王浩官建涛黄俊顾晓棠
Owner SIEMENS POWER AUTOMATION