Rapid power coordinative control method of new energy station participating primary frequency modulation

Abstract

The invention relates to a rapid power coordinative control method of a new energy station participating primary frequency modulation. A rapid power coordinative control system is built in a new energy plant station, the system is used for receiving a rapid power regulation instruction of a stability-control host station system and an AGC / AVC planning regulation instruction of a dispatching center, and can also be used for locally, automatically and rapidly calculating a target power in an off-line way, decomposing the target power and directly issuing the target power to various power generation units such as photovoltaic inverters and draught fans in the station through an Ethernet network, so that active power and reactive power regulation response of the new energy station within 100 milliseconds is achieved, the primary frequency modulation of a power system is participated to achieve stable system frequency and voltage, and the stability of the system and the economic running level of the new energy power station are improved.

Description

technical field [0001] The invention relates to the field of new energy power generation automation, in particular to a method for realizing fast power regulation of new energy applied in large-scale new energy photovoltaic power plants or wind power plants. Background technique [0002] At present, most regions in my country adopt a large-scale centralized development model for new energy sources such as photovoltaics and wind power. Each large-scale new energy development area has dozens of new energy plants and stations, and the installed capacity of a single new energy plant The capacity is larger. Due to the inherent intermittent characteristics of new energy power generation, large-scale new energy grid integration has brought great challenges to grid operation. In order to ensure the safety and stability of power grid operation under large-scale new energy access, since 2011, the State Grid Corporation of China has promulgated the enterprise standards "Technical Regul...

AI Technical Summary

Problems solved by technology

Due to the uncertainty of new energy generation output such as photovoltaics and wind power, it is particularly difficult to adjust the peak load of the power grid. The traditional AGC / AVC system cannot meet the needs of the current grid operation adjustment due to its slow response speed. The rationality of output adjustment urgently requires new energy power stations to actively participate in the primary frequency regulation of the power system. Like conventional thermal power and hydroelectric power stations, it becomes a "friendly" power source for the grid. When a system failure or emergency occurs, it will participate in the primary frequency regulation of the system to assist The system quickly adjusts the power balance to bring the system into a stable state as soon as possible

It should be pointed out that the communication network protocol and the communication interface of the power generation unit in the current new energy power plant station usually do not support the rapid communication requirements of the above-mentioned coordinated control scheme, and the communication protocol and interface need to be designed according to the requirements of the new scheme. For new energy projects The wind power plants and stations should be constructed according to the new requirements, and the communication functions of inverters and related communication networks should be transformed in batches in a planned way for existing new energy plants and stations

Images