In this paper, dynamic economic dispatch model is proposed for power systems with bulk wind power integration. The wind turbine generators are assumed to partially undertake the spinning reserve for the thermal genera...In this paper, dynamic economic dispatch model is proposed for power systems with bulk wind power integration. The wind turbine generators are assumed to partially undertake the spinning reserve for the thermal generator. A double-layer optimization model is proposed. The outer layer use the differential evolution to search for the power output of thermal generators, and the inner layer use the primal-dual interior point method to solve the OPF of the established output state. Finally, the impact of spinning reserve with wind power on power system operating is validated.展开更多
A commercial metal oxide sorbent for the desulphurization of coal-derived gas requires high desulphurization reactivity,mechanical strength,ability to regenerate,and stability to endure many sulfidationregeneration cy...A commercial metal oxide sorbent for the desulphurization of coal-derived gas requires high desulphurization reactivity,mechanical strength,ability to regenerate,and stability to endure many sulfidationregeneration cycles.In this paper,the sulfur capacity and multiple cycles of a nickel-modified ZnFe_(2)O_(4)sorbent prepared by the sol-gel auto-combustion method were measured in a fixed-bed reactor at middle temperature of 300℃(sulfidation temperature)and 500℃(regeneration temperature).Also,the BET surface area,pore volume,average pore diameter and X-ray diffraction(XRD)patterns of the sorbent through multicycles were studied.Multicycle runs indicate that the sulfidation reactivity decreases slightly during the second cycle and keeps steady in the following cycles.The results indicate that the nickel-modified ZnFe_(2)O_(4)keeps high reactivity and structural stability in the multicycle testing of sulfidation/regeneration.展开更多
文摘In this paper, dynamic economic dispatch model is proposed for power systems with bulk wind power integration. The wind turbine generators are assumed to partially undertake the spinning reserve for the thermal generator. A double-layer optimization model is proposed. The outer layer use the differential evolution to search for the power output of thermal generators, and the inner layer use the primal-dual interior point method to solve the OPF of the established output state. Finally, the impact of spinning reserve with wind power on power system operating is validated.
基金supported by the State Key Development Program for Basic Research(973 Program)of China(Grant No.2005CB221203)the National Natural Science Foundation of China(Grant No.20706055).
文摘A commercial metal oxide sorbent for the desulphurization of coal-derived gas requires high desulphurization reactivity,mechanical strength,ability to regenerate,and stability to endure many sulfidationregeneration cycles.In this paper,the sulfur capacity and multiple cycles of a nickel-modified ZnFe_(2)O_(4)sorbent prepared by the sol-gel auto-combustion method were measured in a fixed-bed reactor at middle temperature of 300℃(sulfidation temperature)and 500℃(regeneration temperature).Also,the BET surface area,pore volume,average pore diameter and X-ray diffraction(XRD)patterns of the sorbent through multicycles were studied.Multicycle runs indicate that the sulfidation reactivity decreases slightly during the second cycle and keeps steady in the following cycles.The results indicate that the nickel-modified ZnFe_(2)O_(4)keeps high reactivity and structural stability in the multicycle testing of sulfidation/regeneration.
