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Optimal set start-up mode arrangement method with consideration of voltage stability of power system

A technology of voltage stability and start-up mode, which is applied in the direction of single-network parallel feeding arrangement, electrical components, circuit devices, etc., can solve problems such as voltage stability and peak-shaving requirements that are rarely considered, and achieve practical and reasonable logic structure. Effect

Inactive Publication Date: 2017-06-23
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology

[0004] At present, the start-up arrangement of units in the power grid usually only considers power balance and power flow violation, and seldom considers voltage stability and peak-shaving requirements

Method used

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  • Optimal set start-up mode arrangement method with consideration of voltage stability of power system
  • Optimal set start-up mode arrangement method with consideration of voltage stability of power system
  • Optimal set start-up mode arrangement method with consideration of voltage stability of power system

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Embodiment Construction

[0040] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0041] The present invention proposes a method for arranging the optimal start-up mode of the unit considering the voltage stability of the power system, so as to determine the optimal start-up scale of the local unit in the power grid, such as figure 1 As shown, the method includes the following steps:

[0042] S1. Taking the power flow equality constraints and inequality constraints including normal operation conditions and heavy load conditions as constraints, establish a power system mathematical model for the optimal start-up mode of the unit considering voltage stability;

[0043] S2. Perform binary coding on the mathematical model of the power system to generate an initial population, and use a hybrid algorithm combining adaptive genetic algorithm and continuous power flow method to perform global optimiza...

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Abstract

The invention discloses an optimal set start-up mode arrangement method with consideration of voltage stability of a power system. The method comprises: S1, a power system mathematics module for an optimal set start-up mode with consideration of voltage stability is established by using power flow equality constraints and inequality constraints in a normal situation state and a heavy load state as constraint conditions; S2, binary coding is carried out on the power system mathematics module, an initial population is generated, and an optimal set start-up mode meeting power balancing, power flow balancing, and voltage stability conditions is solved and determined by using a hybrid algorithm based on combination of an adaptive genetic algorithm and a continuous power flow method; and S3, peak load regulation and leveling analyses are carried out on the obtained optimal start-up mode and an optimal start-up scale of a local set is determined by power replacement and set adjustment measures. The method has the following advantages: the start-up mode of the set can be arranged reasonably by considering multiple factors and thus the stable operation of the grid can be ensured.

Description

technical field [0001] The invention relates to the technical field of transmission network planning, in particular to a method for arranging the optimal start-up mode of a unit considering the voltage stability of a power system. Background technique [0002] With the advancement of high-voltage direct current transmission in my country, a number of UHV AC and direct current transmission lines have landed in Shanghai, making the proportion of power received by the Shanghai power grid continue to rise. Taking Shanghai as a typical metropolis, the demand for electricity is large, and the electricity load has typical urban power grid load characteristics: the total load of electricity is large; the average load density is high; the peak-to-valley difference in electricity consumption increases year by year, resulting in peak-shaving problems in the power grid highlight. Due to the increase in the proportion of electricity received by the power grid, and the impact of measures...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/46
CPCH02J3/00H02J3/46H02J2203/20
Inventor 崔勇冯煜尧郭强张开宇冯楠
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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