- Title
- Multi-stage flexible expansion co-planning under uncertainties in a combined electricity and gas market
- Creator
- Qiu, Jing
- Relation
- University of Newcastle Research Higher Degree Thesis
- Resource Type
- thesis
- Date
- 2014
- Description
- Research Doctorate - Doctor of Philosophy (PhD)
- Description
- Power system planning plays an essential role in maintaining the economic, secure and reliable operations of power systems. Following the deregulation of electricity industry, power system planning encounters many challenges as a result of the advent of various market participants, such as market uncertainties and conflicting objectives. Moreover, due to the growing concerns on climate change around the world, natural gas becomes more economically competitive among traditional fossil fuels, leading to the proliferation of gas-fired power generation (GPG) in the power sector. In a market environment, the access to affordable and reliable gas sources can significantly influence the competitiveness of market participants, and then the power system operations consequently. Therefore, power system planning should integrally take into account the gas infrastructure. Fuel availability and prices are treated as uncertain inputs in conventional power system planning methods, which usually suffer from inaccurate market signals (e.g. congestion costs) and insufficient knowledge of network weakness. This thesis research focuses on the proposal of an expansion co-planning framework for gas and electricity transmission infrastructure in a combined energy market. The expansion co-planning approach is able to reflect the dynamic, nonlinear and non-convex nature of the integrated gas and electricity systems. In addition to the reliability/security planning criterion, this research aims to enhance the market efficiency of assets through the planning practice, e.g. facilitating competition, alleviating congestion, improving social welfare, minimizing risks, etc. The proposed expansion co-planning framework can be used to guide the energy industry to form a holistic approach to the strategic planning of future grids including gas and electricity networks, subject to various interacting constraints. It has covered a variety of aspects in planning, including a generalized reliability evaluation method for coupled gas and electricity networks, market timeline mismatch, multi-objectives, tackling interactive constraints, stochastic programming, risk management, energy networks’ vulnerability to extreme events caused by climate change, and linearization techniques. With regard to planning solution techniques, a range of up-to-date methods have been applied or developed, including differential evolution, decision making analysis with the fuzzy particle swarm optimization, historical driven differential evolution with variance reduction techniques, fuzzy adaptive differential evolution with parallel implementation, linear programming, mixed-integer programming, iterative algorithm, etc. A number of benchmark test systems have been used to demonstrate the effectiveness of the proposed expansion co-planning approach. Comparative studies to existing approaches in the literature, where applicable, have also been conducted. The real applicability of the proposed approach has been verified by simulation results.
- Subject
- power system planning; natural gas network; optimization
- Identifier
- http://hdl.handle.net/1959.13/1055324
- Identifier
- uon:15869
- Rights
- Copyright 2014 Jing Qiu
- Language
- eng
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| View Details Download | ATTACHMENT02 | Thesis | 1 MB | Adobe Acrobat PDF | View Details Download |