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

Distributed photovoltaic-energy storage system (PV-BES) output optimization and capacity allocation method counting power loss

A distributed photovoltaic and energy storage system technology, applied in the field of distributed photovoltaic-energy storage system output optimization and capacity allocation, can solve problems such as energy loss and distribution network loss changes

Active Publication Date: 2016-09-28
NORTHEAST DIANLI UNIVERSITY
View PDF5 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As large-scale distributed photovoltaics are connected to the distribution network, the traditional single-ended radial network becomes a multi-power source structure, and the size and direction of the power flow will also change to some extent. There may be reverse power flow and corresponding voltage changes, and then Causes changes in the network loss of the distribution network, resulting in unnecessary energy loss, which is detrimental to both the user and the grid itself

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
  • Distributed photovoltaic-energy storage system (PV-BES) output optimization and capacity allocation method counting power loss
  • Distributed photovoltaic-energy storage system (PV-BES) output optimization and capacity allocation method counting power loss
  • Distributed photovoltaic-energy storage system (PV-BES) output optimization and capacity allocation method counting power loss

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0133] 1 Calculation conditions

[0134] 1) The load forecast value is shown in Table 1;

[0135] 2) The predicted output of photovoltaic modules is shown in Table 2;

[0136] 3) Three distributed light-storage systems PV-BES1, 2, and 3 are located at nodes 12, 20, and 24 respectively;

[0137] 4) The voltage deviation range of each node of the system is 0.93pu-1.07pu;

[0138] 5) The energy storage system adopts all-vanadium flow energy storage battery, and the charge and discharge efficiency is 70%;

[0139] Table 1 Predicted value of load power in each time period

[0140] Tab.1 Prediction of power load in each period

[0141]

[0142] Table 2 Forecast value of photovoltaic module output in each time period

[0143] Tab.2 Prediction of PV module output in each period

[0144]

[0145] Table 3 System annual loss and annual loss reduction percentage

[0146] Tab.3Energy loss and annual loss reduction of three scenarios

[0147]

[0148] Table 4 Capacity confi...

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 distributed photovoltaic-energy storage system (PV-BES) output optimization and capacity allocation method counting power loss. The method is characterized in that on the basis of analyzing the power loss of a distribution network comprising the distributed photovoltaic-energy storage system, a PV-BES output optimization model integrating active and reactive power loss with a power loss change rate as a criterion is built, output of the PV-BES system is optimized under different load levels of the distribution network, and on the basis, the photovoltaic-energy storage system capacity is allocated. The calculation result shows that the method can obviously reduce the distribution network loss and improve the node voltage level, a voltage over-limit node is attributed to a safety operation range, and important reference is provided for operation and planning of energy storage-containing distributed photovoltaic system.

Description

technical field [0001] The invention belongs to the field of distributed photovoltaics, and is a distributed photovoltaic-energy storage system output optimization and capacity configuration method considering power loss. Background technique [0002] With the depletion of energy and the gradual deterioration of environmental problems worldwide, people are paying more and more attention to the development and utilization of renewable energy. Among them, solar photovoltaic is characterized by its clean, safe and renewable characteristics and the advantages of gradually reducing the price of solar panels. Favored worldwide. [0003] my country is rich in solar energy resources, and Photovoltaic generation (PV) is developing rapidly. As one of the important forms, distributed photovoltaic power generation has also shown a good development trend in recent years. As large-scale distributed photovoltaics are connected to the distribution network, the traditional single-ended radi...

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): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06Y02E40/70Y02E70/30Y04S10/50
Inventor 崔杨潘宇刘文严干贵
Owner NORTHEAST DIANLI UNIVERSITY
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