Method and device for determining the quality of voltage and/or current of a power supply

A power supply device, rated voltage technology, applied in the direction of measuring current/voltage, measuring device, measuring electrical variables, etc., can solve problems such as recording threshold violations

Active Publication Date: 2018-07-27
SIEMENS POWER AUTOMATION
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the measured voltage remains below the threshold for a predetermined time, a threshold violation is thus recorded

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 the quality of voltage and/or current of a power supply
  • Method and device for determining the quality of voltage and/or current of a power supply
  • Method and device for determining the quality of voltage and/or current of a power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] exist figure 1 The middle panel a shows the voltage U in the case of an intentional disconnection of the power supply EFF changes over time.

[0030] At the instant t of the intentional disconnection of the power supply 1 , the voltage U drops from approximately 100% of the specified voltage of the power supply to less than 1% within the accuracy of the measurement. If the voltage U is measured here with a high time resolution, measuring points can be acquired not only at 100% and 0% but also at, for example, 95%, 90% and 10% when it falls, as shown in Fig. b as shown schematically.

[0031] The frequency f of the voltage U is likewise a measured parameter. As can be seen from Figure c, from moment t of intentional disconnection 1 Initially, no further frequency f (eg 50 Hz) can be measured (indicated by the dashed line).

[0032] It follows from figure d that, as a further parameter, the third harmonic H3 of the voltage U at the instant t of the intentional disco...

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 invention relates to a method for determining the quality of the voltage (U) and / or current of an energy supply device, wherein parameters (UEFF, f, H3, H5, GHV) of the voltage and / or current are continuously detected and the quality of the voltage (U) and / or current is determined from the detected parameters (UEFF, f, H3, H5, GHV). To make it easier to determine the quality of the voltage (U) and / or current using such a method, disconnections (A) of the energy supply device carried out specifically are detected according to the method of the invention. Parameters (UEFF, f, H3, H5, GHV) detected over the duration of the disconnections (A) are explicitly indicated as such. The invention also relates to an arrangement (7) for determining the quality of the voltage (U) and / or current of an energy supply device.

Description

technical field [0001] The invention relates to a method for determining the quality of the voltage and / or current of a power supply, wherein parameters of the voltage and / or current are continuously recorded and the quality of the voltage and / or current is determined from the recorded parameters. Background technique [0002] The quality of voltage and / or current is often also referred to as power quality. The power supply device can be, for example, a power grid or a power grid branch that supplies power to industry and / or private customers. [0003] The quality of the voltage and / or current can be determined according to a series of different parameters. Thus, for example, the number of voltage or current dips, deviations of frequency or voltage levels from predetermined values, violations of harmonic oscillation components, total harmonic distortion (also known as total harmonic distortion) or flicker can be detected as parameters. [0004] A known method of this type ...

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): G01R19/25
CPCG01R19/2509G01R19/2513
Inventor S.施罗德S.德斯尼卡
Owner SIEMENS POWER AUTOMATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap