Wind power reactive power automatic control method for wind farm monitoring system

A technology of automatic power control and monitoring system, which is applied in wind power generation, electrical components, circuit devices, etc., can solve problems such as the inability to realize online automatic power adjustment of wind farms, achieve powerful automatic control functions of wind power power, and improve automatic operation and management horizontal effect

Inactive Publication Date: 2019-03-26
南京天谷电气科技有限公司
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings in the prior art that the wind farm monitoring system cannot realize the onl

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
  • Wind power reactive power automatic control method for wind farm monitoring system
  • Wind power reactive power automatic control method for wind farm monitoring system
  • Wind power reactive power automatic control method for wind farm monitoring system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] refer to figure 1 , an automatic control method for wind power reactive power used in a wind farm monitoring system, comprising the following steps:

[0029] S1, determine the control mode, adopt the plan tracking mode, and enter step S2;

[0030] S2, plan tracking mode:

[0031] A1. Calculate the voltage deviation ΔV according to the grid connection point voltage V issued by the dispatching department. The formula is as follows:

[0032] Q'=Q pre +S×△V

[0033] In the formula, Q pre is the real-time reactive power of the wind farm at the previous moment, and S is the sensitivity information of the reactive power of the wind farm node to the voltage at the grid connection point;

[0034] A2. Calculate the reactive power adjustment amount Q' of the wind farm according to the formula according to ΔV, and enter step S4;

[0035] S4. Determine whether the adjusted reactive power output Q' of the wind farm meets the operation requirements of the win...

Example Embodiment

[0040] Example 2

[0041] refer to figure 1 , an automatic control method for wind power reactive power used in a wind farm monitoring system, comprising the following steps:

[0042] S1, determine the control mode, adopt the adaptive adjustment mode, and enter step S3;

[0043] S3, adaptive adjustment mode:

[0044] B1. Set the standard voltage reference value V ref is 1.0p.u., read the real-time voltage V of the access point of the wind farm, if it meets 0.98V ref ≤V≤1.02V ref Conditions, the wind farm does not perform voltage reactive power control, and still operates according to the current reactive power output. If the above conditions are not met, go to step B2;

[0045] B2. Calculate the voltage deviation ΔV at the grid connection point of the wind farm, and calculate the reactive power adjustment Q' of the wind farm according to the formula according to ΔV. The formula is as follows:

[0046] Q'=Q pre +S×△V

[0047] In the formula, Q pre is the real-time reac...

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 the technical field of wind farm control in the new energy power generation technology. The method comprises the steps of (S1) judging a control mode, going to a step (S2) ifthe control mode is a planned tracking mode, and going to a step (S3) if the control mode is an adaptive adjustment mode, (S2) performing the planned tracking mode, (S3) performing the adaptive adjustment mode, (S4) judging whether adjusted wind farm reactive power output Q' meets a wind farm operation requirement, and (S5) allocating obtained real-time reactive power output of a wind farm to eachwind turbine according to the capacity proportion of the wind turbine, performing reactive power regulation, and returning to the step (S1) after a delay of one second. According to the method, the real-time power output of the wind farm can be uniformly planned at a wind farm level, and the coordinated operation of a grid-connected wind farm and an accessed region power grid is facilitated.

Description

technical field [0001] The invention relates to the technical field of wind farm control in new energy power generation technology, in particular to an automatic wind power reactive power control method used in a wind farm monitoring system. Background technique [0002] In the past 10 years, wind power has become the fastest growing clean energy in the world with an annual growth rate of more than 30%. At present, the core control technology of wind power generation has been in the hands of foreign companies. The core control technology such as wind farm monitoring system has not yet been localized, and related control products such as unit control system and wind farm monitoring system are completely dependent on imports. With the increase in the number and scale of wind farms, the disadvantages of the wind farm monitoring system being controlled by others to the operation and management of wind farms are becoming more and more obvious. [0003] The wind farm central moni...

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): H02J3/50
CPCH02J3/386H02J3/50H02J2203/20Y02E10/76
Inventor 丁剑锋曹波杨玲
Owner 南京天谷电气科技有限公司
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