A method to obtain the evaluation index of intraday peak shaving effect for large users

Abstract

The present invention provides a method for obtaining the evaluation index of peak-shaving effect within a day for large users, including the following steps: Step S1, determining the time length for evaluating the user's peak-shaving effect, and collecting the information of the power grid at each time point within 24 hours and the user who needs to evaluate the peak-shaving effect Electricity consumption data; step S2, analyze the load curve within 24h of the power grid, divide the average load into several time sub-intervals; step S3, make a line parallel to the time axis with the average load size, divide the sub-intervals The interval is divided into peak load and valley load intervals; step S4, calculate the average load of the target user within the statistical cycle of 24h; step S5, calculate the average load of the target user in each sub-interval; step S6, determine the user's average load in each sub-interval Internal power consumption belongs to peak power consumption or valley value power consumption; the present invention can analyze the load curve of the target user by analyzing the overall load curve of the power grid, dividing the peak and valley periods of power consumption, and analyzing the load curve of the target user to obtain the influence of the user's power consumption mode on the peak regulation of the power system.

Description

technical field [0001] The invention relates to the technical field of power grid peak regulation, in particular to a method for obtaining evaluation indexes of intraday peak regulation effects of large users. Background technique [0002] With the need of my country's sustainable development, the proportion of renewable energy power generation in the power grid continues to increase. The connection of intermittent power sources such as wind power and photovoltaics to the power grid has brought certain challenges to the peak regulation of the power system. Due to the insufficient peak regulation capacity of the current power system in low valleys, it is often necessary to abandon wind and light to meet the real-time balance of power supply and demand, resulting in resource constraints. Waste; during the peak load period, the system backup level drops, the line power flow rises sharply, and the node voltage level drops, which makes the reliability level of the entire system d...

AI Technical Summary

Problems solved by technology

The connection of intermittent power sources such as wind power and photovoltaics to the power grid has brought certain challenges to the peak regulation of the power system. Due to the insufficient peak regulation capacity of the current power system in low valleys, it is often necessary to abandon wind and light to meet the real-time balance of power supply and demand, resulting in resource constraints. Waste; during the peak load period, the system backup level drops, the line power flow rises sharply, and the node voltage level drops, which makes the reliability level of the entire system drop significantly

[0003] At present, the peak shaving market is mainly participated by thermal power units, which need to operate at a relatively low load rate when they participate in the deep peak shaving of the system’s low load, which increases the failure rate of thermal power units and the coal consumption per unit of electricity, reducing the participation of thermal power units in regulation. Insufficient peak-shaving capability of the power grid; during peak load periods, units with high power generation costs and large emissions have to generate electricity to meet the load demand

The current peak-shaving market that only involves generator sets ignores the impact of users on power system peak-shaving

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