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A New Energy Consumption Method Based on Power Generation Frequency Limit Adjustment

A power generation frequency and new energy technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as large randomness, charging time, and location uncertainty

Active Publication Date: 2018-11-06
STATE GRID LIAONING ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that as a mobile energy storage device, electric vehicles are highly random, and the charging time and location are highly uncertain. It is necessary to study and establish an accurate and complete control, scheduling and coordination system.

Method used

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  • A New Energy Consumption Method Based on Power Generation Frequency Limit Adjustment
  • A New Energy Consumption Method Based on Power Generation Frequency Limit Adjustment
  • A New Energy Consumption Method Based on Power Generation Frequency Limit Adjustment

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Embodiment Construction

[0075] For the above-mentioned new energy consumption method based on the regulation of power generation frequency limit value, this method is implemented by taking the calculation of the operation status of a certain area as an example:

[0076] Step 1: Collect basic data through the information collection system. Determine which operation mode to adopt. In the normal operation mode, only continue to step 2, and skip to step 3 during the low load period; the rated frequency of the system in a certain area is specified as 50±0.1HZ, and the installed capacity of each power generation type is shown in Table 1. Regardless of the influence of network loss and local water and thermal power, the output statistics of each power generation type at time t are shown in Table 2. The adjustment coefficient of the thermal power plant is 3.5%, and the system load unit adjustment power unit value is 1.5.

[0077] Table 1 Statistical table of installed capacity of each power generation type ...

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Abstract

The invention discloses a new energy accommodation method based on the power generation frequency limit value adjustment, and the method gives consideration to the improvement of the operation frequency limit value of a power grid in a reasonable range when a system is in normal operation and in a time period of low load, stabilizes the characteristics of randomness, fluctuation and reverse peak regulation of new energy power generation, and improves the accommodation capacity of the system for new energy power generation. The method comprises the steps: constructing a new energy accommodation model inference model based on the power generation frequency limit value adjustment, wherein the system can accommodate more new energy output through primary frequency modulation during normal operation; accommodating the new energy in a low load time period through reducing the technical output of the conventional energy resource, wherein the new energy, which is not completely accommodated, can be used for solving the change transient process of the frequency and a new steady-state value of the system after new energy grid connection through an inference formula after the conventional energy resource has already reached the minimum technical output. According to the embodiment of the invention, the method improves the new energy accommodation capacity of the power grid during normal operation and the low-load time period through the real-time dynamic adjustment of the frequency of the power grid.

Description

technical field [0001] The invention relates to the fields of power system operation control and new energy consumption, in particular to a new energy consumption method based on power generation frequency limit adjustment. In order to improve the new energy consumption capacity of the power grid during low load periods. Background technique [0002] Electricity is an important economic lifeline of the country, and the current world energy crisis and environmental problems are becoming increasingly prominent. With the continuous development and maturity of new energy power generation technology, it is an inevitable trend for the future power grid structure to have a high proportion of new energy. Improving the system's ability to absorb new energy is an effective measure for the sustainable and green development of the power grid. [0003] However, as primary energy sources, wind energy and solar energy cannot be stored, and the electric energy generated by them has the cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46
CPCH02J3/382H02J3/46H02J2203/20
Inventor 葛维春迟成李家珏谭洪恩路俊海张宏宇王顺江黄旭孙峰张涛
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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