Power grid measurement and monitoring system and methods thereof

Abstract

The invention discloses a power grid measurement and monitoring system, comprising a local power grid, a high-voltage electric energy measurement device, a standard high-voltage electric energy measurement device, a data processing device, at least one user high-voltage electric energy measurement device, at least one standard user high-voltage electric energy measurement device and a data processing center, wherein the local power grid consists of multiple power transmission and transformation; the high-voltage electric energy measurement device is used for measuring the electric energy of the whole local power grid; the data processing device is used for receiving, processing, storing, transmitting and displaying measurement results; and the data processing center is used for processing, measuring, displaying and monitoring the obtained data. The invention also provides a power grid measurement method and a monitoring method. According to the scheme provided by the invention, the problem of inaccurate metering of high-voltage electric energy is solved, meanwhile, two important parameters, which are needed by the power system and cannot be solved all the time, i.e. iron loss and line loss, can be obtained; and besides, the operating state of the whole power grid can be monitored.

Description

technical field [0001] The invention relates to a grid measurement system, a grid measurement method and a grid monitoring method, in particular to a basic local grid measurement system and its measurement method, a local grid measurement system and a local grid monitoring method. Background technique [0002] At present, my country's high-voltage power grid is divided into different levels of local power grids, including 500kV, 220kV, 110kV, 60kV, 35kV, 20kV, 10kV and other power networks composed of several transformation and transmission. The ultra-high voltage is finally transformed into low voltage through substations at all levels, such as The 110kV high voltage electricity will be converted into 60kV, 35kV, 20kV, 10kV high voltage electricity after passing through the substation, and the 10kV high voltage electricity will be transformed into 380 / 220V low voltage electricity after passing through the substation and distributed to thousands of households. In the metering...

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Problems solved by technology

[0006] Compared with the existing high-voltage electric energy measuring device in the local area power grid, the accuracy of the new three-phase electric energy measuring device is greatly improved, and the new three-phase electric energy measuring device is used to replace the existing high-voltage electric energy measuring device in the local area power grid. It is undoubtedly the best choice. However, there are a large number of high-voltage electric energy measurement devices in the entire national grid, and it is not feasible to replace them as a whole from an economic point of view. Therefore, there is an urgent need for an economical and easy solution

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