Power quality value-added service scheme design method considering harmonic suppression multi-party participation
A technology for harmonic control and value-added services, applied in harmonic reduction devices, AC networks to reduce harmonics/ripples, computing, etc., can solve problems in the field of limited voltage sags, achieve optimization and maximize benefits the effect of improving and improving satisfaction
Pending Publication Date: 2022-06-03
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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Problems solved by technology
However, the research on value-added services is still limited to the field of voltage sag, and the content and operation mode of the harmonic control value-added service model and its actual engineering verification are problems that need to be solved urgently
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[0098] A metallurgical enterprise, which is a typical 6-pulse rectifier harmonic source power user, has an average annual power consumption of 20 million kW·h, and is equipped with 2 distribution transformers, each with a capacity of 2500kV·A and a rated voltage of 10 / 0.4kV . Typical data of each distribution transformer load: apparent power 2007kV·A, active power 1570kW, reactive power 1250kV·A, power factor 0.782, the main wiring diagram is as follows image 3shown. The 5th, 7th, 11th, and 13th harmonics have high content, among which the 5th harmonic current is 24.4A, the 7th harmonic current is 17.4A, the 11th harmonic current is 11.12A, and the 13th harmonic current is 9.36 A. According to GB / T14595-1993 "Power Quality Harmonics of Public Power Grid", it cannot meet the requirements, which deteriorates the power quality of the power grid and is not conducive to the safe and economic operation of the power grid. According to the local catalog electricity price of 0.75 y...
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The invention discloses an electric energy quality value-added service scheme design method considering harmonic suppression multi-party participation. The method comprises the following steps: firstly, analyzing a nonlinear user harmonic suppression demand degree from three aspects of equipment failure rate and potential risk, economic loss degree and potential income obtained by improvement of a transformer load rate after suppression; then, based on the principle of an analytic hierarchy process and in combination with factors needing to be considered in harmonic suppression, establishing an index system in a layered manner, and constructing a nonlinear user power quality management cost and demand degree evaluation model; and finally, providing a value-added service mode combining treatment equipment leasing and property right transfer and roles and benefits of a power grid company, an equipment manufacturer and a non-linear user in value-added services in combination with harmonic treatment requirements of the user. According to the invention, high-quality power supply demands of users can be determined, high-quality power supply value-added service potential quantitative evaluation is realized, development of high-quality power supply value-added service related work is promoted, the users are guided to actively participate in electric energy quality treatment, and the treatment efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of power quality value-added services, in particular to a power quality value-added service scheme design method considering the participation of multiple parties in harmonic control. Background technique [0002] In order to solve the current problems in the power industry, the document "Several Opinions on Further Deepening the Reform of the Power System" was released in March 2015, emphasizing the need to create a stable, transparent and open market environment with the main needs of the power market as the direction. "Pricing by quality" has become the orientation of the future electricity market. At present, a large number of distributed energy sources, large-capacity impact load access, and nonlinear loads appear in the distribution network, and users have an increasingly strong demand for high-quality power supply. Value-added services have a broad space in the future electricity market, and diversif...
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Login to View More IPC IPC(8): G06Q10/06G06Q50/06H02J3/01
CPCG06Q10/0637G06Q10/06393G06Q10/06395G06Q10/06315H02J3/01G06Q50/06Y02E40/40
Inventor 张世锋常潇王金浩张敏李慧蓬樊瑞赵军郭翔宇王腾鑫高乐宋金鸽
Owner ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER