A decentralized technique based protection and control scheme for distribution network with high DER penetration

2017 ◽  
Author(s):  
Jingshan Wang ◽  
Ke-Jun Li ◽  
Mingqiang Wang ◽  
Ying Sun ◽  
Zahid Javid
Keyword(s):  
Distribution Network ◽  
Control Scheme ◽  
Protection And Control ◽  
And Control

A Distributed Protection and Control Scheme for Distribution Network with DG

2013 ◽  
Vol 732-733 ◽  
pp. 628-633
Author(s):  
Bing Bing Tong ◽  
Gui Bin Zou ◽  
Ming Lei Shi
Keyword(s):  
Fiber Optic ◽  
Distribution Network ◽  
Fault Isolation ◽  
Fiber Optic Network ◽  
High Penetration ◽  
Control Scheme ◽  
Feeder Terminal Unit ◽  
Protection And Control ◽  
And Control ◽  
Optic Network

High penetration level of distributed generation (DG) connected to distribution network makes the protection and control in the traditional distribution network face great difficulties, so this paper proposed a protection and control technology based on advanced feeder terminal unit (AFTU). According to DGs capability and load, the scheme divides the distribution network into several zones in advance, each of which can operate in island mode. Circuit breakers (CB) together with AFTU are installed at the beginning of feeder, the border of two zones and the point of DG connection. AFTUs interconnect with each other through the fiber optic network. AFTU detects the local electrical quantities in real-time and exchanges information with others through the fiber optic network. It can locate the faulted zone quickly to achieve fault isolation and island operation according to local and neighboring information. The reclosing of CB and the control of reconnection of DG are also designed. The case analysis illustrates the feasibility of the proposed distributed protection and control scheme.

scholarly journals Design of protection and control scheme for hybrid nanogrid

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Sachin P. Jolhe ◽  
Gunwant A. Dhomane ◽  
Minal D. Karalkar
Keyword(s):  
Distribution System ◽  
Local Power ◽  
Power Capacity ◽  
Small Power ◽  
Local Loads ◽  
Input System ◽  
Control Scheme ◽  
Single Input ◽  
Protection And Control ◽  
And Control

AbstractNanogrid is “The new ray of hope” for people living in remote isolated locations as well as where power supply reliability is poor. A nanogrid is a small power capacity distribution system with the ability to operate standalone or with a utility grid. It consists of local power production supplying local loads and energy storage systems. In this paper, an innovative inverter design is presented, which converts the power in a single stage. It is superior to the traditional two-stage inverter system and can supply hybrid loads (AC and DC loads) with a single input. System AC and DC bus voltages are regulated under both steady-state and dynamic load variation conditions in the nanogrid. Simulation results are presented which confirm the suitability of the inverter and its control strategy for a hybrid nanogrid system.

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