Research On The Optimization Method Of Power Grid Equipment Technology Reconstruction Project Based On LCC Theory

With the rapid development of power grid construction and the expanding range of the power grid equipment assets, a number of issues creep up during the traditional asset management process. The type and quantity of the power grid equipment are large, and their operating conditions vary widely. In order to ensure the safety and stability of the power grid, technical improvement is needed for the problem and faulty equipment. The existing power grid equipment technical improvement access decision process is influenced by subjective factors, and it's lack of objective basis for project approval. It often leads to phenomenon that equipments after transformation can only use a very short time and funds for technological renovation are wasted. In order to solve the problems such as unscientific projects, by researching on equipment operation life cycle cost, this paper proposes technical access optimization model based on minimum operating life cycle cost, and makes the construction project decision for technical or overhaul scheme accordingly. On this basis, this paper establish the technical improvement access optimization model, and finally find the optimal scheme. The results of this paper can improve the existing power grid equipment technical access decision method, and has important practical significance.Using the theory of life cycle cost as theoretical basis, this paper deep analyses the existing power grid equipment technical improvement access decision process, and points out that there are three main problems. Problem one, there are too many subjective factors in the process of setting up technical improvement project and there is short of an objective and unified judgment method to determine whether the power grid equipment needs to be transformed. Problem two, making decision scientifically is difficult in the approval process of higher authorities and there is short of the scientific determination methods to judge the urgency level of transformation needs of the power grid equipment and its priority order. Problem three, when making technical transformation project access decision of the power grid equipment, economic considerations are not comprehensive. In order to solve the abo ve problems, his paper puts forward the corresponding countermeasures aiming at the causes of the problem. Countermeasure one, the state evaluation method of power grid equipment is given, and the evaluation of the state of power grid equipment is realized; Countermeasures two, this paper quantifies the evaluation results of the power grid equipment; Countermeasures three, technical transformation project access optimization model of the power grid equipment is established. This series of measures can solve problems occurring in the existing power grid equipment technical improvement access decision process, and the final effect will be able to improve the power grid equipment technical innovation project access process.This paper has two main inno vations. One is that this paper makes the overall evaluation of the status of equipment using fuzzy comprehensive evaluation method and qualitative evaluation methods from three angles of safe?technical and economic performance, which can determine whether the equipments need to transform. Second, this paper puts forward the value evaluation model based on value engineering, using the security status and the annual average cost of transformed equipment as a basis to select scheme. That is a new method to select scheme, and can make more objective and accurate transform decision.