Cel The aim of the project is to demonstrate the suitability of self-excited induction generators combined with gas expanders as reliable, cost-effective, offshore electrical power sources.The gas expander will use first stage separated gas and therefore avoid sand transport problems.The unit is currently installed at the British Gas, Bishop Auckland Test Facility, where it is undergoing endurance testing on pipe-line quality gas at conditions close to design. Typical test results are as follows :Inlet pressure 554 p.s.i.g.Differential pressure 56.8 p.s.i.g.Operating temperature 16.4 degrees CElectrical output 12 kW at 430 V, 58.6 Hz, 3-phaseInlet density 31.6 kg/cubic mMolecular weight 18.403Actual flow atinlet conditions 284 cubic m/hourApart from the stability difficulty when large instantaneous load changes are applied to the system, the overall control system is performing very well.Gas trapped in underground formations is at high pressure and often at temperatures significantly above ambient. This project proposes to extract some of the gas energy and to use it to generate electrical power. A gas expander developed by Hayward Tyler of Luton, England will be use to achieve this. However, because of the very high pressures involved, shaft sealing becomes very difficult, and, as a result, it is desirable to incorporate the gas expander and generator within a common pressure vessel for reasons of both reliability and safety. The simplest electrical machine for this task is the induction generator and, as offshore rigs are remote from electrical grids, self-excitation controllers are therefore needed. Consequently, the proposed technological development in this project is to develop the excitation and control equipment required by stand-alone induction generators on North Sea rigs.The project development work will be divided into five main phases. In Phase 1 (12months) the overall system will be designed. Emphasis will be placed on ensuring that the equipment complies with all relevant safety standards. In Phase 2 (4 months), the prototype digital electronic control system will be constructed.In Phase 3 (3 months), testing will be carried out with Hayward Tyler in England.Offshore conditions will be simulated.In Phase 4 (3 months), the entire electrical engineering system will be installed on an unnmanned North Sea rig. Finally, in Phase 5 (12 months), rigorous testing programmes will be implemented to analyse the overall performance of the system installed on the offshore rig. Design modifications will be carried out as required . Program(-y) ENG-HYDROCARB 2C - Programme (EEC) of support for technological development in the hydrocarbons sector, 1986-1989 Temat(-y) 1.6 - MISCELLANEOUS Zaproszenie do składania wniosków Data not available System finansowania DEM - Demonstration contracts Koordynator ENERGY CONTROL SYSTEMS LTD Wkład UE Brak danych Adres CRANFORD HALL 3 MONTROSE 4 Dublin Irlandia Zobacz na mapie Koszt całkowity Brak danych
