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Power system external network equivalent model automatic forming method

An equivalent model, power system technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of low equivalent precision

Inactive Publication Date: 2006-04-26
TSINGHUA UNIV
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  • Description
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Problems solved by technology

[0016] The purpose of the present invention is to overcome the disadvantage that the equivalent value of the external network cannot reflect the real-time change of the operation mode of the external power grid in the past in the regional power grid dispatching center, resulting in low accuracy of the equivalent value

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  • Power system external network equivalent model automatic forming method
  • Power system external network equivalent model automatic forming method
  • Power system external network equivalent model automatic forming method

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Embodiment Construction

[0072] In summary, the present invention contains the following steps in sequence:

[0073] ①Initialization: The lower-level power grid dispatching center determines the internal network range of its own power grid, the boundary between its own power grid and the external power grid, and the tie line between it and the external power grid that needs to be reserved, and reports this result to the higher-level power grid dispatching center. This work is completed in the early stage of system modeling, and usually remains unchanged in the future;

[0074] ②The lower-level power grid dispatching center collects real-time information, and transmits its own real-time telemetry and remote signaling data to the upper-level power grid dispatching center through the remote data communication network;

[0075] ③After the upper-level grid dispatching center collects the data, it performs the state estimation and power flow calculation of the whole network. On this basis, according to the scop...

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Abstract

The invention discloses a WARD equivalent expansion method based on sensibility in the electric power dispatching automation domain, which comprises the following steps: conveying real-time data from lower level electric network dispatching center to higher level electric network dispatching center; doing total network current calculation; calculating real-time external net equivalent model for each lower level electric network; sending the external net equivalent model to the lower level electric network dispatching center through remote data net; combining the received external net equivalent model of lower level electric network dispatching center self electric network with self interior electric network detail model; doing network analytic calculation of lower level electric network energy management system and artificial training system, wherein the system is periodic starting or automatic starting when the network structure changes. The invention adapts expansion WARD equivalent method of keeping buffer net, which is automatic formation through artificial assignment or sensitivity method.

Description

Technical field [0001] The invention belongs to the technical field of power system dispatching automation, and particularly relates to a higher-level power grid dispatching center tracking the changes of the power grid operating state in real time, and providing an external network equivalent model for the lower-level power grid in real time. The lower-level power grid dispatching center uses the equivalent model to perform network analysis and calculation of its own power grid's energy management and simulation training system. Background technique [0002] The power grid is composed of multiple regional power grids interconnected as a whole; and the dispatch and control of the power grid are usually hierarchical, decentralized, and carried out independently. The power grid dispatching centers at all levels monitor the power grids within their own jurisdictions and perform network analysis and calculations for the corresponding energy management system (EMS) and simulation trai...

Claims

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Application Information

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IPC IPC(8): G06F17/00G06Q50/06G06Q50/16
Inventor 张伯明孙宏斌吴文传张海波
Owner TSINGHUA UNIV
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