A Generic Method to Model CO₂ Emission Performances of Combined‐Cycle Power Plants for Environmental Unit Commitment

Abstract

This paper proposes a generic methodology for combined‐cycle gas turbine modeling. The main objectives are the estimation of the CO2 emissions for specific units and their integration in an environmental power dispatch that considers several plants. First, a design procedure aims at calibrating the model using the information available from the manufactures. Off‐design points are also investigated to estimate the CO2 emissions for the whole operating range of the units. The obtained CO2‐cost results show a good consistency with the emission coefficients found in the literature for that type of units. Then, those CO2 costs are used as input parameters for a unit commitment problem. Mixed‐integer linear programming formulation minimizes the global emissions for a set of different units on Jurong Island in Singapore. The grid‐emission factor obtained for the simulated network displays values close to the registered field data, which validates the developed model. Finally, a tightened formulation for the power‐dispatch problem is introduced. The objective is to reduce the computational time while guaranteeing good performance of the returned solutions.

A clusterized energy management with linearized losses in the presence of multiple types of distributed generation

“…The centralized generation on site consists in thirteen CCGT units displaying five different technologies (denoted from A to E). Those thirteen units are among the four power plants as follow: Keppel (KPL): 2 units type A and two units type B − Pacific Light Power (PLP): 2 units type C -Sembcorp (SMB): 1 unit type A and 2 units type D -Seraya (SRY): 2 units type C and 2 units type E. Previous works focused on the modeling of the CO2 emissions of the CCGT technologies based on their operating points and efficiency (ranging from 53 % to 62 %) [1]. Their nominal operating points and part load operations were simulated to finally compute their specific CO2 emissions (SCE in kg/kWh) (Figure 2a).…”

“…The work presented in this paper focuses on reducing carbon emissions due to the power generation on Jurong Island in Singapore. That island hosts around 40 % percent of the total generation capacity in Singapore with thirteen identified Combined Cycle Gas Turbine (CCGT) units aggregated in four power plants [1] [2]. A great part of the generated energy is consumed on the island by refineries, oil storage facilities and other petrochemical activities while the surplus is exported to the Singaporean mainland.…”

Fastened Unit Commitment with Loss Linearization for Distributed Generation Planning Studies

“…The work presented in this paper focuses on reducing the carbon emission due to power generation on the Jurong Island in Singapore (Figure 1) [1]. In order to do so, distributed generation (DG) is considered.…”

Optimal scheduling of energy systems incorporating load management schemes

“…of Singapore's electricity is produced using natural gas. Most of this electricity is generated using the CCPP technology [13]. CCPPs exhibit higher energy efficiencies by producing electricity and recyclable waste heat from a single fuel [69].…”

“…On the other hand, many countries such as Singapore still rely heavily on fossil-fuel based generators such as CCPPs for their energy requirements [13]. While there is certainly a shift towards decarbonizing the generation of energy, fossil-fuel based units are expected to play a key role for many years to come due to a variety of reasons.…”