Multi-level reactive power and voltage control method for distribution network with distributed renewable energy
A voltage control method and renewable energy technology, applied in the direction of AC network voltage adjustment, reactive power compensation, reactive power adjustment/elimination/compensation, etc. Consider the mutual cooperation of different equipment action times to achieve the effect of avoiding adjustment oscillation, optimizing control, and realizing reactive power layered balance
Inactive Publication Date: 2018-12-11
国网江苏省电力有限公司淮安供电分公司 +2
View PDF7 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] At present, the coordinated control method of distribution network voltage is mainly based on optimization and coordination based on optimization theory, which requires coordinated control of all reactive power sources and voltage regulation equipment. The demand for data is high, and the interaction time of different equipment is not considered. Therefore, It is difficult to be practically applied to the voltage coordinated control of the distribution network
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] Attached below Figure 1-3 The present invention is described in detail with examples.
[0038] figure 1 It is a schematic diagram of reactive power and voltage coordinated control system of distribution network.
[0039] The whole control system includes regional global optimization control and local real-time coordinated control.
[0040] The global centralized optimal control of the region is to optimize the switching of capacitor banks on the feeder, the reactive output of distributed energy and the reactive output of dynamic reactive compensation equipment, on the basis of ensuring the voltage level of all feeders in the entire region , optimize the reactive power flow, and achieve the smallest regional line loss or the best overall quality of voltage. The local real-time coordinated control is based on the feeder as a unit. Through the reactive power regulation of distributed energy on the feeder, dynamic reactive power compensation equipment and SVR, etc., it ...
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
Login to View More Abstract
The invention relates to a distribution network operation control strategy under low-voltage level access of renewable distributed energy, and provides a multi-level reactive power and voltage coordinated control method of distribution network, in order to improve reactive power and voltage problems existing in distribution network, achieve social reactive power resource sharing, and improve service quality of distribution network users. The control system can be subdivided into regional global optimal control, local real-time coordinated control and reactive power and voltage control in distributed renewable energy substation. The global centralized optimal control of reactive power and voltage is to optimize the reactive power output of reactive power equipments in the whole control area. The local real-time coordinated control realizes the reasonable flow of reactive power in the distribution line by the feeder voltage coordinated controller. Reactive power and voltage control in power station needs to make full use of the two-phase regulation ability of renewable energy grid-connected converter to control the reactive power output of power station, and needs power coordinationcontroller to realize.
Description
technical field [0001] The invention relates to the technical field of distribution network operation control under multi-voltage level access of renewable distributed energy sources, in particular to a multi-level reactive voltage control method for distribution networks containing distributed renewable energy sources. Background technique [0002] As the voltage quality has gradually become the bottleneck to improve the service quality of distribution network users, the reactive power control and voltage regulation of distribution network have also received more and more attention. The traditional research and application of reactive power control and voltage regulation mainly focus on the high-voltage distribution network, but the research and application of the medium-voltage distribution network are relatively lacking. The first reason is that due to the large number of nodes involved in the medium-voltage distribution network, it is neither possible nor necessary to in...
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
Login to View More Patent Type & AuthorityApplications(China)
IPC IPC(8): H02J3/16H02J3/18H02J3/38
CPCH02J3/382H02J3/16H02J3/1864Y02E40/30
Inventor徐晓春刘浩文吴晓飞刘东尤毅韩伟黄玉辉
Owner国网江苏省电力有限公司淮安供电分公司