Presentation on theme: "1 R. Saiju under the supervision of S. Heier, University of Kassel Isolated Grid with Micro-Hydro Power Plant, PV System and Diesel Genset as Back up System."— Presentation transcript:
1 R. Saiju under the supervision of S. Heier, University of Kassel Isolated Grid with Micro-Hydro Power Plant, PV System and Diesel Genset as Back up System
Agenda Aims New HPS Possibility Models Control Structure Conclusion
Aims of the Research Work Exploring possibilities to develop new HPS without batteries For that following models has been developed PV Plant Diesel generator Plant Micro-Hydro Power Plant HPS – PV+Micro-Hydro Implementation of Hybrid Power System (HPS) model to develop, test and verify new control strategies Development of new hardware prototype using micro-controller, test and verify
New HPS without battery Formation of mini-grid AC-Coupled Expandable: Possible to connect other sources like WTG, Loads Modular: with same control structure State variables formation by micro-hydro
Suitability The new concept is suitable for the developing, mauntainous countries Focus country: Nepal Remote area: No road access, No grid connection, small rivers available, and sufficient radiation through out the year, specially in dry winter season For example: 1000 W/m2 nearly 300 days/ year
Present Micro-Hydro Example: Khani Khola Micro-Hydro Village Electrification Project Maximum discharge in Jan: 390 lps Average Discharge: 151.03 lps Designed discharge: 113 lps Installed Capacity: 18 kW No. of electrified Houses: 219 Frequency controller: Electronic Load Controller (No water flow regulation) It means the rural electrification is only focused where water flow is more than requirement.
Advantages from new philosophy o Possible to electrify villages where water discharge is not much high o Utilisation of maximum solar energy which is available nearly 300 days/year o Possible to avoid expansive and complicated battery system o Guarantee of electricity with help of diesel genset
Models Micro Hydro Power Plant PV Power Plant Diesel Genset HPS-PV+Micro-Hydro
Micro-Hydro Power Plant Voltage control through AVR Frequency control through water regulation
Results For constant load and increasing irradiation
Diesel Genset Due to low cost, robust construction 3 phase induction generator is used in diesel genset. A capacitor is used to excite the generator at no load condition. Mathematical representation
Results.. Showing behaviour of system Fig. 1: Ramp Load Increment For given constant capacitor voltage collapse. Fig. 2: Voltage establishment by increasing capacitor. Fig. 1 Fig. 2
Isolated Grid, PV-Micro-Hydro System In this model, diesel genset is to be integrated. Synchronous generator runs at no load, if diesel genset has to deliver power in absence of sufficient water flow.
Conclusion Such HPS explores the possibility to electrify remote areas using locally available renewable energy sources System is economical and compact due to absence of batteries Simulation models show good results and it is possible to develop hardware system based upon this model