Method for participating in dynamic voltage control of electric system through photovoltaic power generation cluster

A photovoltaic power generation and dynamic voltage technology, which is applied in the direction of AC network voltage adjustment, circuit devices, and AC network circuits, can solve the problems of poor real-time voltage tracking ability, rigid control mode, and unsuitability for fast and stable dynamic voltage regulation. Achieve the effect of superior dynamic performance and reduced burden

Active Publication Date: 2017-09-05
TSINGHUA UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing inverter control strategies are relatively rigid control methods such as constant power, constant power factor, and droop control, which do not fully consider the cooperation of each power generation unit within the cluster, and the real-tim

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 participating in dynamic voltage control of electric system through photovoltaic power generation cluster
  • Method for participating in dynamic voltage control of electric system through photovoltaic power generation cluster
  • Method for participating in dynamic voltage control of electric system through photovoltaic power generation cluster

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0056] The method for the photovoltaic power generation cluster participating in the dynamic voltage control of the power system proposed by the present invention, its flow chart is as follows figure 1 As shown, it includes the external equivalent identification process and the dynamic voltage regulation process based on wide-area PI control. Both processes are executed in a certain cycle and completed by the photovoltaic cluster coordination controller. Among them, the dynamic voltage regulation process will also regularly send the information of the cluster coordination layer to the controller of the photovoltaic power generation unit through broadcast communication, and at the same time receive the node measurement information of the photovoltaic power generation unit. The method specifically includes the following steps:

[0057] (1) Set the sampling period T of the grid-connected point status of the photovoltaic power generation cluster u is 0.5 seconds, and sets the exte...

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 method for participating in dynamic voltage control of an electric system through a photovoltaic power generation cluster, and belongs to the technical field of electric system operation and control. The method comprises the steps that a photovoltaic cluster PI control framework is built; a cluster coordination layer measures voltage and active and reactive power of a grid connection point to complete external equivalent recognition, and a photovoltaic cluster output reactive power reference value is generated; on the basis of a tide linearization method, a reactive power output distribution model of each photovoltaic power generation unit is built, and reactive power output of each unit is calculated. According to the method, the reactive compensation capability of a power generation unit inverter is utilized, on the basis of wide area PI control, dynamic voltage indifference regulation of the whole photovoltaic cluster is achieved, and reasonable distribution of reactive power of the power generation units is achieved. According to the method, the photovoltaic cluster has the advantage of showing the whole voltage dynamic indifference regulation on a system, reactive power output of each power generation unit is reasonably arranged, and the dynamic characteristic of voltage control is improved.

Description

technical field [0001] The invention relates to a method for a photovoltaic power generation cluster to participate in dynamic voltage control of a power system, belonging to the technical field of power system operation and control. Background technique [0002] With the rapid development of human society, the demand for energy has also shown explosive growth. However, the excessive consumption of traditional energy and its damage to the environment force people to seek alternative forms of clean and renewable energy such as solar energy. Photovoltaic power generation has developed rapidly in recent years, and the installed capacity of photovoltaic power generation in the world has grown rapidly. Due to the geographical imbalance of supply and demand resources in my country, large-scale photovoltaic grid-connection is not to achieve local consumption, but to transport from low-load areas to distant places with heavier loads. developed areas. A photovoltaic cluster can be a...

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): H02J3/16
CPCH02J3/16H02J2203/20Y02E40/30
Inventor 吴文传张伯明孙宏斌许桐王中冠郭庆来王彬
Owner TSINGHUA UNIV
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