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Adjusting voltage to improve clean energy consumption method

A technology for clean energy and voltage regulation, applied in the power grid field, can solve the problems of reduced power grid reliability, unestimable load, and difficulty in setting electricity prices, and achieves the effects of increasing electricity consumption, increasing valley value, and reducing capacity

Active Publication Date: 2022-05-10
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is passive, the load on the user side cannot be estimated, and it is difficult to formulate the electricity price during the off-peak period of the power grid, which greatly reduces the reliability of the safe and stable operation of the power grid

Method used

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  • Adjusting voltage to improve clean energy consumption method
  • Adjusting voltage to improve clean energy consumption method
  • Adjusting voltage to improve clean energy consumption method

Examples

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Embodiment 1

[0094] Step 1. When the load in the grid is in the peak period, the load power reaches the maximum at this time. When the new energy power generation and the backup unit cannot meet the load requirements, the voltage of the grid is stepped down. For pure resistance loads Among them, P is the actual power of the pure resistive load, u is the voltage applied to both ends of the pure load, and r is the resistance of the resistive load itself. If the voltage is lowered, the power consumed by the resistive load can be correspondingly reduced, thereby reducing the load value of the power grid and improving the regulation of the unit. Peak reduces pressure.

[0095] Step 2. Set the maintenance time Δt of the peak moment of the load power during the peak load period of a certain day 1 =2.5h, the total power generated by the power grid P lvfd =500MW, load power consumption P lvfh =550MW, rated voltage u of grid transmission ed =10kV, in order to reduce the voltage to a certain exte...

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Abstract

The invention belongs to the technical field of power grids, and in particular relates to a method for adjusting voltage to increase clean energy consumption. Under the condition that a large amount of new energy power generation is continuously connected to the grid, adjusting voltage is particularly important for improving clean energy consumption and reducing the capacity of thermal power units. When the load in the power grid is at a peak, and the load power is relatively large at this time, when the new energy power generation and all standby units cannot meet the load requirements, the voltage of the power grid is stepped down to reduce the load power of the power grid during the peak period, so that the power supply Reach a relatively balanced and stable state with the load demand, so as to buffer the power grid through the peak time smoothly. When the load is in a low-valley period, the power grid is boosted to operate, which can relatively increase the load power to achieve the purpose of increasing the low-valley value. Corresponding Increase the power consumption of the load, reduce the peak-to-valley difference and reduce the capacity of the standby unit through different stages of step-up and step-down methods, so as to achieve the effect of improving clean energy consumption.

Description

technical field [0001] The invention belongs to the technical field of power grids, and in particular relates to a method for adjusting voltage to increase clean energy consumption. Under the condition that a large amount of new energy power generation is continuously connected to the grid, adjusting voltage is particularly important for improving clean energy consumption and reducing the capacity of thermal power units. Background technique [0002] In recent years, with the continuous development of power electronics technology, the grid-connected capacity of new energy represented by clean energy has continued to increase. However, due to the instability of power generation of new energy grids and the greater impact of weather conditions, in order to meet the peak-shaving requirements, the current Most power grids use traditional units as backup capacity. When new energy power stations have a large output, the traditional units are not capable of peak regulation, resulting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/382
Inventor 王同左浩李家珏朱钰高凯邵宝珠滕云周家旭李鹏里黄未田丰源
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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