Power grid load transfer method based on global search

Abstract

The present invention discloses a power grid load transfer method based on global search, comprising the following steps: step 1: acquiring grid model data and state estimation data, and based on the grid model data and the state estimation data, making a grid equivalent to an undirected weighted graph; step 2: calculating the bus maximal power supply capability; step 3: searching for the feasible load transfer path of a bus according to the grid model data and the state estimation data acquired in the step 1; and step 4: acquiring the information of a lost-voltage bus, and obtaining the feasible load transfer path of the lost-voltage bus according to the feasible load transfer path of the bus obtained in the step 3 as a final load transfer scheme. The method can find the feasible transmission line load transfer route and the bus coupler switch load transfer route after the occurrence of voltage loss in the substation bus, can quickly and effectively formulate the load transfer scheme under the voltage loss of the substation bus, and can improve the control capability of the dispatcher for the power grid to protect the security and stability of the power grid.

Description

technical field [0001] The invention relates to the field of intelligent dispatching of power grids. Background technique [0002] In recent years, with the continuous growth of my country's national economy, the demand for electricity in all walks of life has increased rapidly. However, due to the relatively lagging construction of urban power grids, problems such as unreasonable grid structures have become more prominent, which makes it difficult to meet users' needs for electricity. quality, power supply reliability, etc. Especially due to the rise of the tertiary industry, the structure of power load has also changed. The proportion of small and medium-sized users, including residents, has increased year by year, resulting in longer and longer lines in urban power distribution systems, more and more nodes, and increasingly complex structures. The more complex it is, the greater the probability of failure. [0003] When the power grid fails, the faulty equipment needs to...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a power grid load transfer method based on global search, solve the current load reduction problem caused by equipment overload and failure, and realize load transfer under failure

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