Industrial steam supply coal-fired power plant peak regulation comprehensive system

Abstract

The invention discloses an industrial steam supply coal-fired power plant peak regulation comprehensive system. The system comprises a 220kV high-voltage bus, a circuit breaker, a peak regulation facility transformer, a current transformer and a peak regulation facility high-voltage bus which are connected in sequence. A high-voltage stand-by power supply, an electric steam supercharger and a low-voltage transformer are connected with the peak regulation facility high-voltage bus. A low-voltage PC section is connected with the low-voltage transformer. The system is simple and flexible in operation, and peak regulation can be rapidly put into according to a power grid requirement. A peak regulation facility is small in occupied area and small in influence on a power plant space. When an unit participates in power grid peak regulation, a power generation capacity of a generator can be consumed to participate in deep peak regulation. When an operation load of the unit is lowered, pressureof externally supplied steam is increased through the electric steam supercharger, and a steam pressure requirement of a user is satisfied. The steam supply pressure can be flexibly adjusted according to the requirement of the steam user, and the unit does not need to adjust the operation mode to adjust the steam supply pressure.

Description

technical field [0001] The invention relates to power equipment, in particular to a comprehensive system for peak regulation of coal-fired power plants for industrial steam supply. Background technique [0002] At present, my country's new energy power generation is developing rapidly, while coal power has excess capacity. When the proportion of new energy sources in the grid gradually expands, the demand for peak-shaving power sources also gradually increases. Compared with new energy and other power sources, coal power has better peak-shaving performance. For countries that use coal as their primary energy source, highly regulated coal power plants have become the most realistic and feasible option. [0003] Since coal-fired power units undertake the functions of deep peak-shaving and backup of rapidly growing non-fossil energy power generation, thermal power units, especially coal-fired power units, will continue to operate at low load or deep peak-shaving in the next f...

AI Technical Summary

Problems solved by technology

However, when the coal-fired unit is operating at reduced load, the industrial extraction pressure may not meet the user's requirements, resulting in insufficient operational flexibility of the power plant.

Images