A Reactive Power Optimization Method for Regional Power Grid Based on Limit Power Flow

A regional power grid and power flow calculation technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, photovoltaic power generation, etc., can solve problems such as large amount of calculation, high complexity, and low power factor on the high voltage side of the main transformer. Achieving a good physical foundation and expanding the optimization space
CN105186541BActive Publication Date: 2017-09-15STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
Publication Date
2017-09-15

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Abstract

The invention discloses a reactive power optimization method for a regional power grid based on limit power flow, which includes: collecting power information of the regional power grid for power flow calculation, and obtaining a power flow calculation result; obtaining a voltage deviation rate and a gateway power factor according to the power flow calculation result; determining The weight coefficient of the voltage deviation rate and the gate power factor, and obtain the weighted sum of the voltage deviation rate and the weight coefficient of the gate power factor; judge whether the weighted sum is greater than the engineering threshold. The present invention can adapt to the reactive power allocation requirements under different load modes, and adopts the PQ-PV node type conversion mode and the mode of relaxing the transformer stall constraint according to the characteristics of the feasible domain of the optimization problem under different load modes, and then expands the reactive power configuration, etc. The optimization space of the problem ensures that the reactive power configuration of the power system can fully meet the load demand in theory.
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Description

technical field

[0001] The invention relates to the technical field of reactive power control in electric power systems, in particular to a reactive power optimization method for regional power grids based on limit current flow. Background technique

[0002] With the rapid development of power grid construction, the coverage of the power grid is continuously expanding, and the structure is becoming more and more complex. The stability, safety and reliability of the power grid operation have become more important. At present, although the power dispatching, automation department, relay protection, operation and maintenance, communication and other departments of the power supply company perform their duties, they also need to work together. Timely and accurate acquisition of relevant power grid operation information can greatly improve their work efficiency. At the same time, all departments can play Advantages in their respective professional fields, better cooperation with ...

Claims

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