Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A real-time non-fixed-point interpolation calculation method for switch within step size

A calculation method and step point technology, which are applied in the field of computing to achieve the effects of being beneficial to real-time computing, optimizing real-time computing performance, and reducing the amount of computation and computation time.

Active Publication Date: 2017-06-23
CHINA ELECTRIC POWER RES INST +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Time-domain simulation has become an important tool for power system analysis, design and research. With the wide application of power electronics technology, flexible AC transmission, high-voltage direct current Energy generation equipment generally needs to be connected to the grid through power electronic converters, and the network topology of power electronic switches, which is essentially changing with time, poses new requirements and challenges for traditional power system time domain simulation. Especially in the real-time simulation of electromagnetic transients, on the premise of ensuring the real-time performance of the calculation, it is a thorny technical difficulty to calculate the power electronic switching action at frequent and non-full-step long-term points

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
  • A real-time non-fixed-point interpolation calculation method for switch within step size
  • A real-time non-fixed-point interpolation calculation method for switch within step size
  • A real-time non-fixed-point interpolation calculation method for switch within step size

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] The calculation steps in the case of more switch actions in one step of the specific embodiment provided by the present invention are as follows image 3 shown, including the following steps:

[0043] (1) Carry out the calculation of the first step length, and find that there is a switch action within the step length;

[0044] (2) Calculate the interpolation value of the state value of the first switch action point: based on the state value x of the previous step point 1 and the state value x at this step point 2 , for the state value x at the moment of the first switch action point k1 k1 Perform interpolation calculation, x k1 It is represented by the following formula ①:

[0045] ①;

[0046] Where: x k1 is the state value at the moment of the first switch action point k1; t k1 is the time point at time k1; t 1 is the state value x 1 Δt is the time length of a standard integral calculation step.

[0047] (3) From the first switch action point x k1 Take the n...

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 real-time uncertain-point interpolation calculation method for a switch within a step. The method includes the following steps: calculating the state value of the first step point of the electromagnetic transient state, and finding that there is a switch action within the step length; performing interpolation calculation on the state value of the switch action point; calculating the next step point from the switch action point Calculate the long state value; extrapolate from the current step point to the next computed full step point. When the method calculates the switching characteristic circuit, the calculation speed of the switch subnet can be improved, which is beneficial to the real-time calculation. Thereby providing a time margin for improving the accuracy of switching calculations, and can be applied to the electromagnetic transient simulation calculation of switching characteristic circuits in real-time, super real-time, and off-line calculations, and the full-step calculation can be compatible with various electromagnetic transient switching algorithms And not limited to such as trapezoidal integration method, backward Euler method, trapezoidal integration method with damping or its modified combination, which can effectively improve the calculation speed and accuracy of simulation, and optimize the real-time calculation performance of electromagnetic transient state.

Description

technical field [0001] The invention relates to a calculation method, in particular to a real-time uncertain-point interpolation calculation method of a switch within a step. Background technique [0002] Time-domain simulation has become an important tool for power system analysis, design and research. With the wide application of power electronics technology, flexible AC transmission, high-voltage direct current Energy generation equipment generally needs to be connected to the power grid through power electronic converters, and the network topology of power electronic switches, which essentially changes with time, poses new requirements and challenges for traditional power system time-domain simulations. Especially in the real-time simulation of electromagnetic transients, on the premise of ensuring the real-time performance of the calculation, it is a thorny technical difficulty to calculate the power electronic switching action at frequent and non-full-step long-term po...

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): G06F19/00
Inventor 郑伟杰
Owner CHINA ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com