Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Control method and device for improving consumption of distributed power source

A technology of distributed power supply and control method, which is applied in circuit devices, wind power generation, photovoltaic power generation, etc., and can solve distribution network voltage flicker, harmonics, short-circuit current, active and reactive power flow, transient stability, dynamic Stability, negative impact of frequency control, impact on distribution network voltage form and other issues

Active Publication Date: 2019-04-09
JIANGSU ELECTRIC POWER CO +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For example, distributed photovoltaic power generation will affect the voltage form of the distribution network, and will affect the characteristics of the distribution network such as voltage flicker, harmonics, short-circuit current, active and reactive power flow, transient stability, dynamic stability, and frequency control. Negative impact

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
  • Control method and device for improving consumption of distributed power source
  • Control method and device for improving consumption of distributed power source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Now in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.

[0023] figure 1 It is a control system for improving the consumption of distributed power sources, including a control device 30 (also called an energy management system), a local distributed photovoltaic power source, a DC bus 60, a local energy storage system, a DC-AC converter 70, and a first transformer 80. The second transformer 90, the local power load 40, and the grid side 50; wherein, the local distributed photovoltaic power supply includes a plurality of photovoltaic power supplies, each photovoltaic power supply includes a photovoltaic power generation device 1 and a DC-DC converter 11, and local energy storage The system includes an energy storage battery (or energy storage capacitor) and an energy storage converter.

[0024] The output terminal of the photovoltaic power generation device is connected to the input terminal of 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 control method and device for improving the consumption of a distributed power source. The method comprises the following steps: S1: acquiring power generation power within acurrent time period, power consumption power within the current time period and a current charge state; S2, calculating non-consumption power within the current time period; S3, judging whether the non-consumption power within the current time period is greater than zero, and if not, executing step S4; S4, judging whether the current charge state is greater than or equal to the minimum charge state, and if so, executing step S5; S5, performing accumulation to obtain a non-consumption power sum, and performing accumulation to obtain total charge and discharge power; S6, calculating the difference between the non-consumption power sum and the total charge and discharge power to obtain a power difference; and S7, selecting the minimum power of the maximum discharge power and the power difference of a local energy storage system, and sending a command to discharge at the minimum power to the local energy storage system. By adoption of the control method and device disclosed by the invention, the consumption of the distributed power source can be maximized on the entire time period, and meanwhile the stability of the switching power between the distributed power source and a grid sideis maintained as much as possible.

Description

technical field [0001] The invention relates to the technical field of grid-connected microgrids, in particular to a control method and device for improving the consumption of distributed power sources. Background technique [0002] With the depletion of fossil energy and the enhancement of environmental awareness, the development and utilization of renewable energy such as wind energy and solar energy are becoming more and more extensive. The distributed power generated by wind energy and solar power is connected to the grid. Sex and instability, the increasing number of distributed power sources has caused a huge impact on the power grid. [0003] For example, distributed photovoltaic power generation will affect the voltage form of the distribution network, and will affect the characteristics of the distribution network such as voltage flicker, harmonics, short-circuit current, active and reactive power flow, transient stability, dynamic stability, and frequency control. ...

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 Applications(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/383H02J3/386H02J3/32H02J3/388Y02E10/56Y02E10/76
Inventor 史如新王德顺杜健康周镜曙杨波冯鑫振赵上林王曙宁
Owner JIANGSU ELECTRIC POWER CO
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
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