A Frequency Coordinated Control Method for Multiple DC Lines Sending Islands

A DC line and frequency coordination technology, applied in the direction of reducing/preventing power oscillation, etc., can solve a large number of problems such as cutting machines, and achieve the effect of efficient frequency control means
CN106532745BActive Publication Date: 2019-03-05ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
Publication Date
2019-03-05

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a frequency coordination control method specific to send-out islands of multiple direct current circuits. When a system suffers from a single-pole or dual-pole direct current locking failure, emergency frequency control on an island power grid with severe faults is performed by adopting a direct current power improving instruction (RUNUP), a direct current frequency limiter (FLC) and control measures of performing primary frequency modulation on a generator speed regulator and performing steady control on power cutting in turns. The frequency coordination control method is applicable to a multi-loop direct current transmitting end system with a concentrated control main station.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of safety and stability analysis of electric power systems, and in particular relates to a frequency coordination control method aiming at sending islands from multiple DC lines. Background technique

[0002] The regional resource characteristics and unbalanced economic development of the Southern Power Grid determine that the Southern Power Grid needs to carry out west-to-east power transmission and cross-regional resource optimization for a long period of time. Yunnan is rich in hydropower resources. As the large-scale hydropower transmission base of the Southern Power Grid, with the continuous expansion of the power transmission scale, by 2016, after the Luxi DC back-to-back project and the ±500kV Yongren-Funing DC project are completed and put into operation, Yunnan Power Grid The 6-circuit direct current transmission system and the main grid of China Southern Power Grid are connected asynchronously. As...

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