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System Dynamics Modeling of Grid Investment Planning and Medium-Voltage Distribution Networks Optimization

Author: WangWei
Tutor: ZhangLiZi
School: North China Electric Power University (Beijing)
Course: Proceedings of the
Keywords: Electricity Market Transmission and Distribution Investment Planning System Dynamics Optimizing Networks Configuration Configuration-unit
CLC: F407.61
Type: PhD thesis
Year: 2007
Downloads: 739
Quote: 5
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Abstract


After the reform of electricity market, the theory innovation of grid investment planning emphasize the analysis of transmission and distribution investment planning from investor and regulator, however the theory innovation of the medium-voltage distribution planning whose networks are the most intricate emphasize networks optimization. On the base of generalizing the domestic and international theories research and the practicing experience, the creative research in transmission and distribution investment planning as well as its regulation and medium-voltage distribution networks optimization are acquired, as follows:(1)Based on theory of system dynamics(abbr. SD), the simple and complex SD simulation model of transmission and distribution investment planning is put forward in the electricity market, which provides scientific methods for grid corporations to make the investment strategy. From investor’s standpoint, the dynamic behavior of grid corporations’investment planning. It is set up SD models of dynamic relations of transmission investment planning analysis as well as varies’effect, thereby the method of simulation is adopted for the evaluation of transmission and distribution investment planning.(2)The signal model and warning mechanism of grid investment planning are put forword based on environment carrying capacity theory, which provide the scientific methods for electric regulation department judging transmission and distribution opportunity exactly. The carrying-pressure index of four-dimensional environment of the signal of planning is defined that include the entironment—congestion, human environment—market power, technic environment—reliability and financial environment—transmission and distribution price. So that the four-dimensional environment either sigal of planning is set up models systemically using the method of environmental carrying capacity, at the same time the regulation of constructing opportunity is solved.(3)It is proposed three modes of transmission and distribution price regulation found SD models for price forming regulation, which expressed directly the good and bad points of different regulation modes and the dynamic behavior character in order that the research on the modes of price regulation change qualitative analysis to quantitative and roughness to exactness. This provides scientific method for pricing rationally and effective regulation(4)The SD model of grid investment planning regulation currently and based on regulation information system are all founded. It is analyzed contrastively that grid price and capacity-load ratio change dynamically and asymmetric information manifests. So founding information system of regulation may eliminate asymmetric information and restrain the fluctuation of price and capacity-load ratio(5)The dissertation propose the model based on configuration-unit and its derivation theory using the idea of object oriented and natural evolution in the planning of medium-voltage distribution systems, which put forword a new measure for categorizing and modeling the connection modes. The system is established which contains“series”,“tribe”and“configuration-unit”. So as to consider special problem in electricity market and increasing load, the index system including derivative ability is proposed , what’s more,the medium-voltage distribution optimization use fuzzy comprehensive evaluation.

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