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A New Method for Si...
A New Method for Simplifying Complex DC Systems and Obtaining the Controller Droop Coefficients
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- Cao, Xin (författare)
- North China Elect Power Univ, Sch Elect & Elect Engn, Beijing 102206, Peoples R China.;State Grid Beijing Elect Power Res Inst, Beijing 100071, Peoples R China.
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- Han, Minxiao (författare)
- North China Elect Power Univ, Sch Elect & Elect Engn, Beijing 102206, Peoples R China.
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- Nee, Hans-Peter, 1963- (författare)
- KTH,Elkraftteknik
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- Yan, Wenli (författare)
- Power Univ, Mathe & Phys Sch North China Elect, Beijing 102206, Peoples R China.
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North China Elect Power Univ, Sch Elect & Elect Engn, Beijing 102206, Peoples R China;State Grid Beijing Elect Power Res Inst, Beijing 100071, Peoples R China. North China Elect Power Univ, Sch Elect & Elect Engn, Beijing 102206, Peoples R China. (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2022
- 2022
- Engelska.
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Ingår i: IEEE Transactions on Power Systems. - : Institute of Electrical and Electronics Engineers (IEEE). - 0885-8950 .- 1558-0679. ; 37:2, s. 996-1006
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- DC grid has become an important application in power transmission. However, the exist works only have the method to obtain the droop coefficient in a radial topology. Also, this droop coefficient is for V-I droop control. There is no such like method to obtain the droop coefficient for the P-V droop control. This paper proposed a new method for a complex dc grid to obtain the droop coefficients. Firstly, based on the converter control strategies, the types of converter were classified. It will help to find out which kinds of converter can be participated into the dc-side voltage control. Secondly, a virtual node was defined, and the matrix of the dc grid was reshaped to fit the new added virtual node by using the proposed simplification method. An example was shown how this method worked. After that a new method of calculating the P-V droop coefficient was proposed. Finally, a simulation model was investigated to verify if the proposed method can operate in a real system. The results showed that the simplification method can ensure the mathematical relationships of the dc system. And simulations show good performances of the droop coefficient calculation method.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Voltage control
- Topology
- Microgrids
- Mathematical model
- Transmission line matrix methods
- Resistance
- Power transmission
- DC grid
- droop control
- simplification method
- virtual node
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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