Global-positioning-system-based quantitative analysis and evaluation method for primary frequency regulation performance of regional power grid

Abstract

A global-positioning-system-based quantitative analysis and evaluation method for primary frequency modulation performance of a regional power grid. The method comprises the following steps: step 1, reading generator set data subject to time tick by the global positioning system and establishing the function of regional power grid parameters through a generator set regulation and control system or a power grid wide area detection system; step 2, setting an effective frequency disturbance criterion and quantitatively analyzing the primary frequency modulation performance of the regional power grid based on a frequency disturbance process; step 3, establishing evaluation indexes for the primary frequency modulation performance of the regional power grid; and step 4, constructing an evaluation method, evaluating the primary frequency modulation performance of the regional power grid and publishing an evaluation result. The method overcomes the shortcomings of the prior art, quantitative and accurate analysis and evaluation on the primary frequency modulation performance of the regional power grid are implemented by using the generator set data subject to the time rick by the global positioning system and comprehensively considering the influence of a generator set type, electromechanical characteristics and an index calculation and value obtaining way, so random power grid fluctuation can be rapidly eliminated and the electric energy quality can be improved.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a quantitative analysis and evaluation method for primary frequency modulation performance of a regional power grid based on a global positioning system. Background technique [0002] The primary frequency regulation function is an effective means to quickly eliminate random fluctuations in the power grid and improve power quality. It is the main content of grid-connected security evaluation and auxiliary services. At present, some achievements have been made in the evaluation method of primary frequency regulation performance, but the main shortcomings are as follows: [0003] 1. All results are for a single generating set, and the diversity of generating set types results in inconsistent evaluation criteria; [0004] 2. With the rapid development of the power grid, the regional power grid composed of multiple generating units connected to the interconnected gri...

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Problems solved by technology

[0005] 3. In addition, the current frequency modulation performance evaluation does not take into account the coordination and differences between electricity, heat, and machinery. Compared with electrical characteristics, heat and machinery characteristics often have a large delay and inertia link, that is, there are inconsistencies. Synchronization, and the frequency fluctuation of the power grid is a continuous time-varying process, the calculation and value method of the primary frequency regulation index directly affects the objective authenticity of the actual performance

[0006] Therefore, it is necessary to study an accurate, objective and effective analysis and evaluation method for the primary frequency regulation performance of the regional power grid, but there is no evaluation method related to the primary frequency regulation performance of the regional power grid, and the development of GPS technology can obtain the synchronization of the regional power grid generator sets data, providing feasibility and operability for the evaluation of the primary frequency regulation performance of the regional power grid

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