Check patentability & draft patents in minutes with Patsnap Eureka AI!

Modulated power distribution method with auxiliary direct current control function

A technology of DC additional control and distribution method, which is applied in the direction of DC network circuit devices, electrical components, circuit devices, etc.

Active Publication Date: 2014-07-30
NR ELECTRIC CO LTD +2
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new DC additional control modulation power distribution method, make full use of the fast controllability of the DC system power, reasonably distribute the modulation power, maximize the power modulation requirements, and solve the problem of multi-cutting machines and multi-loading At the same time, the change of the ground electrode current is considered in the distribution process to meet the requirements of the system operation

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
  • Modulated power distribution method with auxiliary direct current control function
  • Modulated power distribution method with auxiliary direct current control function
  • Modulated power distribution method with auxiliary direct current control function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] In the following, the technical solution of the present invention will be described in detail in conjunction with the accompanying drawings, taking the power modulation requirement to reduce the power as an example, where P mod The amount of power that needs to be modulated for DC additional control, I ELLIM Limit the current for the ground electrode. If only one of the two poles is running, the DC power of the running pole is P, the DC voltage is U, and the upper and lower limits of the transmission power are P max and P min (collectively referred to as P LIM ), ΔP order is the modulation power to be allocated, ΔP is the modulation power actually allocated to the pole; if both poles are in operation, the poles are called pole 1 and pole 2 respectively, the DC power of pole 1 is P1, and the DC voltage is U1. The upper and lower limits of power are P max1 and P min1 (collectively referred to as P LIM1 ), ΔP1 order is the modulation power to be allocated, ΔP1 is 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 modulated power distribution method with an auxiliary direct current control function. According to the method, a bipolar control mode signal and an operation state signal of a direct current system are judged; if only one of two poles operates, a first strategy is adopted for power distribution; if both the poles operate, one pole is in the bipolar power control mode and the other pole is in the single-pole current control mode or single-pole power control mode, whether a second strategy or a third strategy is adopted for power distribution is determined according to the system state of the second pole and the load flow distribution and system stability of an alternating current power grid connected with the second pole; if both the poles operate, and both the poles are in the bipolar power control mode, or one pole is in the single-pole current control mode or single-pole power control mode and the other pole is in the ingle-pole current control mode or single-pole power control mode, the second strategy is adopted for power distribution. By means of the method, modulated power can be reasonably distributed among all the poles of the direct current system, the influence of the current of the earthing pole on system operation is fully considered, and the operation safety of the direct current system and the power grid is guaranteed to the maximum degree.

Description

technical field [0001] The invention belongs to the field of direct current transmission, and a direct current transmission control and protection device, in particular to a modulation power distribution method for direct current additional control. Background technique [0002] Due to the fast controllability of DC system power, in addition to the basic control mode and basic control method, the DC control system is also designed and provided with additional control modulation functions. By detecting the input control quantity selected in advance to reflect the characteristics of the system change, the corresponding power modulation quantity is generated to affect the actual power delivered by the DC transmission system, thereby improving the performance of the combined AC and DC system. The most commonly used ones include functions such as tight power boost and power drop, frequency control, additional damping control, etc. [0003] Most of the existing additional 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): H02J1/00
Inventor 邹强潘卫明王永平
Owner NR ELECTRIC CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com