Method for evaluating random intermittent DG optimized integration based on random optimal power flow

An optimal power flow, intermittent technology, applied in the evaluation field of optimization integration, which can solve the problems of high calculation accuracy and large amount of calculation.

Inactive Publication Date: 2015-03-25
STATE GRID CORP OF CHINA +2
View PDF3 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The analysis of random factors based on the Monte Carlo simulation method has the disadvantage of a large amount of calculation, but the calculation accuracy is high, and it has good applicability to fields such as power grid planning that do not require high calculation time.
When dealing with random factors such as DG and l

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 for evaluating random intermittent DG optimized integration based on random optimal power flow
  • Method for evaluating random intermittent DG optimized integration based on random optimal power flow
  • Method for evaluating random intermittent DG optimized integration based on random optimal power flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0121] Embodiment: 1) Active distribution network simulation example and basic data:

[0122] a) Simulation example: The simulation example of the present invention is obtained based on the transformation of an actual distribution network, and the system structure is as follows figure 2 As shown, there are 48 nodes and 13 10kV feeders, powered by two 110kV substations and one 35kV substation. The dotted line in the figure indicates the overhead line, including two wiring methods of multi-section multi-connection and single radiation; the solid line indicates the cable , including single-ring network, double-ring network and switch station wiring; this calculation example basically covers the overhead line and cable connection forms commonly used in medium-voltage distribution networks in my country.

[0123] The model of the overhead line in the power distribution system is JKLYJ-10 / 240, the maximum allowable current carrying capacity is 520A, the cable is XLPE copper core cab...

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 method for evaluating random intermittent DG optimized integration based on the random optimal power flow. The method for evaluating the random intermittent DG optimized integration based on the random optimal power flow comprises the following steps that (1) a mathematic model for construction and operation of an active distribution network is established, wherein the mathematic model comprises an objective function which fully considers construction cost and operating cost of the active distribution network and constraint conditions for operation of the active distribution network; (2) the operating state of the active distribution network is simulated based on the Monte Carlo simulation method and the optimal power flow is calculated, wherein the operating state of the active distribution network is simulated and the optimal power flow is calculated mainly for full consideration of the randomness and the time sequence of DG and a load, the Monte Carlo simulation method is used for simulating the distribution of the random variables such as the wind speed and the illumination intensity in several years based on a DG and load model, and the state variables, such as the branch flow, the DG output and the power loss, in per hour are accurately calculated by means of the optimal flow according to the simulating state; (3) the economical efficiency of the active distribution network is calculated, wherein calculation for evaluation of the economical efficiency of a certain DG integration scheme for the active distribution network is conducted mainly.

Description

technical field [0001] The invention relates to the fields of active distribution network and distributed power generation, in particular to an evaluation method for optimizing and integrating random intermittent DG in the active distribution network. Background technique [0002] With the continuous maturity of new energy power generation technology, distributed power generation is connected to all levels of the distribution network, and the penetration rate continues to increase, which is the development trend of the future distribution network. Due to the double fluctuation of load and DG output, the high penetration rate of DG brings a series of problems to the operation control of distribution network. Active distribution network (Active Distribution Network, ADN) is an important way to solve this problem. [0003] Except for a small number of controllable DGs such as diesel engines, micro gas turbines, and energy storage, most of the internal DGs in ADN are random DGs,...

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): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 张静炜严耀良金山红郭峰董成明张俊周卫国杨晓雷屠一艳刘军黄静孙可黄宏盛李振坤卫春峰
Owner STATE GRID CORP OF CHINA
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