Reliability assessment method and system for power transmission system including wind-solar storage, power generation and transmission
A technology of power transmission system and reliability, applied in the direction of climate sustainability, energy storage, electrical components, etc., can solve the problems of difficulty in determining multi-state transition parameters, lack of reliability evaluation methods, etc., to achieve the effect of improving accuracy
Active Publication Date: 2021-04-06
STATE GRID ECONOMIC TECH RES INST CO +2
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Problems solved by technology
Usually, when component reliability modeling is performed, reliability modeling of various generator sets and components is mostly considered, but load fluctuations are seldom considered; when system state sampling is performed, wind-solar-storage equipment usually takes into account its various operating modes. It is equivalent to a multi-state model, but it is difficult to determine its multi-state transition parameters
Therefore, there is a lack of a complete, reasonable and convenient reliability assessment method for power generation and transmission systems with wind-solar-storage resources.
Method used
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[0062] Embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art would recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Also, in this specification, the drawings are not drawn to scale, and like reference numerals denote like parts.
[0063] Aiming at the requirements of resource planning and reliability assessment of wind-solar-storage-storage under the background of the "source-network-load-storage" large power grid, the present invention provides a method for reliability assessment of power transmission system including wind-solar-storage-generation-storage power generation considering operation simulation. Considering the uncertainty factor of the source load, its fluctuatio...
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The invention discloses a reliability evaluation method and system for a power transmission system containing wind, wind, storage, power generation, and the method includes: constructing a component reliability model based on the source-load fluctuation characteristics; obtaining the fault status of the component and the corresponding Failure rate; sampling the fault states to form a fault state set, and obtaining the failure rate corresponding to the fault states in the set; based on the reliability model, the operation simulation of the transmission system including wind, storage, power generation and power generation is carried out to realize power generation and load Power balance; calculate the power flow of the power transmission system including wind, wind, storage, power generation; cut off the machine and load according to the calculation results of the power flow of the power transmission system including wind, wind, storage, power generation; calculate and count the reliability index of the power transmission system Reliability assessment of the wind power storage, power generation and transmission system is carried out. The present invention conducts a year-round operation simulation of the "source-network-load-storage" system, improving the accuracy of reliability evaluation.
Description
technical field [0001] The invention relates to the technical field of power system reliability assessment, in particular to a reliability assessment method and system for a power transmission system including wind, wind, storage, power generation and transmission. Background technique [0002] Vigorously developing renewable energy has become a global consensus. However, as the penetration rate of renewable energy continues to increase, various uncertainties brought about by wind turbines and photovoltaic power generation that depend on the weather have also brought new challenges to the planning and operation of the power grid. Great challenge. As a flexible control resource, energy storage can stabilize the source-load fluctuations of the power system through its effective allocation and reasonable control, and has become an indispensable means to deal with the integration of renewable energy. normal mode. [0003] Power system reliability assessment is a measure of the...
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IPC IPC(8): G06Q10/06
CPCH02J3/00H02J3/32Y02E70/30
Inventor 程林田鑫齐宁彭方正江轶高效海王智冬张家宁张艳
Owner STATE GRID ECONOMIC TECH RES INST CO