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

Rolling type stochastic projection integration method suitable for dynamic simulation of active power distribution networks

A technology of random projection and dynamic simulation, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of deterministic methods ignoring random characteristics, achieve strong convergence and weak convergence, and improve simulation calculation efficiency Effect

Active Publication Date: 2016-07-27
南京首风智慧电力研究院有限公司
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, deterministic methods ignore the stochastic nature of real physical systems and thus often lead to conservative simulation conclusions
As the inherent randomness of active power distribution systems continues to increase, the impact of random disturbances during system operation on dynamic simulation results is becoming more and more significant, making traditional deterministic simulation techniques applied to modern power distribution systems with high randomness. Significant limitations exist when simulating

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
  • Rolling type stochastic projection integration method suitable for dynamic simulation of active power distribution networks
  • Rolling type stochastic projection integration method suitable for dynamic simulation of active power distribution networks
  • Rolling type stochastic projection integration method suitable for dynamic simulation of active power distribution networks

Examples

Experimental program
Comparison scheme
Effect test

specific example

[0080] The numerical integration method of stochastic differential equations can be described by two kinds of convergence: strong convergence and weak convergence, where the strong convergence indicates the accuracy of the numerical method to estimate the stochastic process trajectory itself. Let η n for t n The exact solution of the stochastic differential equation η(t n ), the algorithm is said to be γ-order strong convergence. The necessary and sufficient condition is that there is a constant C such that

[0081] E|η n -η(t n )|≤Ch γ (5)

[0082] In the formula, h is the step size and is small enough. This example is based on the numerical calculation method to analyze the strong convergence of a rolling random projection integration method suitable for active distribution network dynamic simulation of the present invention, and the linear stochastic differential equation shown in the following formula is used as the test equation:

[0083] dη(t)=λη(t)dt+μη(t)dW(t), ...

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 discloses a rolling type stochastic projection integration method suitable for dynamic simulation of active power distribution networks. According to the method, the stochastic characteristic and multi-time scale characteristic in the operation process of active power distribution systems are fully considered, and a stochastic differential-algebraic equation-based active power distribution system dynamic simulation model is solved through combining a deterministic projection integration algorithm with a hybrid stochastic numerical integration algorithm and fusing a thought of rolling type multi-stochastic trajectory simulation; the method is suitable for the stochastic dynamic simulation calculation under system fault or operation conditions. Compared with the traditional stochastic numerical integration algorithm, the method disclosed in the invention has approximate strong convergence and weak convergence, can be used for greatly improving the simulation calculation efficiency under same Monte Carlo simulation times, and is particularly suitable for the stochastic operation simulation and analytical calculation of active power distribution systems with various distributed power supplies and loads.

Description

technical field [0001] The invention relates to a dynamic simulation method of an active power distribution system. In particular, it relates to a rolling random projection integral method suitable for dynamic simulation of active power distribution network, which is suitable for dynamic simulation application of active power distribution system with multiple distributed power sources considering system random characteristics. Background technique [0002] In recent years, with the widespread application of distributed generation (distributed generation, DG), energy storage, and demand-side response technologies at the power distribution level, the traditional one-way passive power distribution system is gradually transitioning to a Active power distribution system with bidirectional power flow. The active power distribution system is a complex power distribution system capable of controlling multiple distributed power sources, energy storage and loads. With the massive ac...

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
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 李鹏原凯王成山范朕宁赵金利
Owner 南京首风智慧电力研究院有限公司
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