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Diesel Issues in Wind Diesel – Overview / Introduction

Diesel Issues in Wind Diesel – Overview / Introduction. Per Lundsager Senior Consultant, Darup Associates Inc. Advisor to WiDAC. 2011 International Wind Diesel Conference, Diesel Issues Session. My WD background.

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Diesel Issues in Wind Diesel – Overview / Introduction

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  1. Diesel Issues in Wind Diesel – Overview / Introduction Per Lundsager Senior Consultant, Darup Associates Inc. Advisor to WiDAC 2011 International Wind Diesel Conference, Diesel Issues Session

  2. My WD background • 1984 – 1990 Head of Risoe’s WD programme -> the SR&R system concept (Simple, Robust & Reliable). Later on consultant on several systems and active in integration of wind power in isolated systems • SR&R: Standard 55 kW WTG with IG, 34 kW DGS modified with an electromagnetic clutch between diesel and SG allowing the SG to act as synch condenser when diesel stopped. No supervisory control. A flywheel fixed to the SG allowed the diesel to be started instantaneously like a UPS system. No battery storage. In spite of the abuse of the diesel the system was active in regular R&D operation until replaced in 2004. • The DGS was in regular low load (down to 0%) operation during its entire life. We even undertook a series of ”backdrive” tests together with Bob Sherwin (AOC) down to – 25% (i.e. negative) load without any stability or other problems – and the diesel worked well until 2004 when the WD experimental setup was replaced by a thing called SYSLAB aimed at Wind integration R&D (a separate and lengthy story) International Wind Diesel Conference, March 8-11, 2011, Girdwood, Alaska

  3. Please notice • I am not a Diesel guy (but my father was, so I have sort of grown up with diesel engines / locomotives) • Generally, wind guys do not understand diesels very well, they tend to have strange ideas about what is possible or not possible, so wind guys should always try to stay close to a diesel guy (and vice versa in case of WD systems) • The basic thing in a wind diesel system – whether it is a WTG retrofit or an entire system – is that all equipment in addition to standard diesel genset equipment including of course the wind turbine(s) has to be paid for by • Primarily the fuel savings • Possible income from optional / deferrable loads served by excessive wind power • Possible value of externalities and other community benefits • This means that it is very important that wind into a diesel power plant replaces as much diesel as possible (diesel guys do not always like that) • Therefore diesel low load is possibly one of the hottest Diesel issues right now. I have my opinions, but the floor will be open for you to voice yours. International Wind Diesel Conference, March 8-11, 2011, Girdwood, Alaska

  4. Some WD Basics International Wind Diesel Conference, March 8-11, 2011, Girdwood, Alaska

  5. Some WD Low Load / High Penetration Facts • Pct • DGS Pct Relative • Min Fuel Fuel • Load Saving Saving • 0 48,3 100,0% • 10 43,7 90,5% • 20 39,3 81,4% • 30 24,6 50,9% • 40 29,8 61,7% • 50 25,2 52,2% • Computer simulated results • 100 kW DGS • 150 kW WTG • Weibull (A,k) = (7,50, 1.54) => Average wind 6,68 m/s • 100 kW Consumer load constant International Wind Diesel Conference, March 8-11, 2011, Girdwood, Alaska

  6. Diesel low load and other issues • Some diesel manufacturers (Caterpillar, Detroit Diesel et al.) once participated in one of the annual WD Workshops many years ago. When asked directly whether they would sell me a machine with their usual warranties to a project where I would load it down to 0% they answered ”Of course, that’s what we are here for, but we do have certain conditions”. They would not hear about negative load. • Therefore it is my opinion that by maintaining proper communication with diesel manufacturers you may be able to operate your system down to 0% load with full DGS warranty, provided you adhere to the manufacturers demands – for example expressed in terms of the time you need to run the machine at full blast to clean it after so-and-so-long-time at low (down to 0%) load. • There are of course other issues (such as OM&R in remote & cold climate communities, scheduling and dispatch of multiple DGS units, start and stop strategies) We will hopefully hear about those also International Wind Diesel Conference, March 8-11, 2011, Girdwood, Alaska

  7. Per Lundsager M.Sc Ph.D: WE background • 1941 Born in Aarhus, Denmark • 1967 Graduated DTU: M.Sc (1967), Ph.D (1979) • 1970 Risø National Laboratory • 1975 Rotor design on 2 MW Tvind Wind Turbine • 1977 Measurement program Gedser WTG (DK EA / US DOE) • 1980 - 82 Head of DK Test Station for Small WT’s (test, certific et al.) • 1983 Visiting Professor SUNYAB USA (grad / post grad courses) • 1984 – 90 Risoe Wind Diesel Programme (SR&R system et al.) • 1986 – 92 International consultancy (Somalia, Cape Verde, PR China) • 1993 – 99 Independent International WE Consultant in own company • 2000 ff Distributed generation, sustainable energy systems etc (Position papers; projects (Batlife); proposals (EU NoE DER Lab)) • 2000 ff International consulting (5 year Danida project, Indian Centre for WE Technology (CWET)) • 2006 Retired, still doing some work for Risø and other clients (WB, Governments) in my own consulting company Darup Associates Inc. (WiDAC et al.) International Wind Diesel Conference, March 8-11, 2011, Girdwood, Alaska

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