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Flexible power supply wiring method for thermal power plant

A wiring method and technology for factory power use, applied in electrical components, circuit devices, emergency power supply arrangements, etc., can solve the problem of high cost, reduce external power purchases, save production costs, and enrich the effect of calling methods.

Pending Publication Date: 2022-06-14
华润电力(贺州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for flexible connection of electricity used in thermal power plants to solve the problem that the traditional electricity used in factories must be outsourced, resulting in high costs.

Method used

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  • Flexible power supply wiring method for thermal power plant
  • Flexible power supply wiring method for thermal power plant

Examples

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Embodiment Construction

[0027] In order to facilitate a better understanding of the present invention, the following examples are used to illustrate, which belong to the protection scope of the present invention, but do not limit the protection scope of the present invention.

[0028] The applicant's high-voltage plant voltage is 10kV first-class, and a single unit is equipped with two high-voltage split transformers. One of the 60 / 33-33MVA high-voltage plant working split transformers has two 10kV working bus sections (A and B sections); the other 75 / 38-38MVA high-voltage public desulfurization split transformer has one branch with a 10kV public desulfurization bus. Section (C section), another branch to the 10kV limestone powder station section. The 10kV public desulfurization bus section (C section) of a single unit is connected to the 10kV public desulfurization bus section (C section) of another unit through a tie switch; the 10kV limestone powder station section is a reserved load with a reserv...

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Abstract

The invention provides a power supply flexible wiring method for a thermal power plant, which comprises the following steps: 1) if only a # 1 machine runs and is shut down normally / accidentally, a quick switching device is manually or automatically switched to start a standby transformer power supply; 2) starting the # 1 machine, if the # 2 machine operates, supplying power from the # 2 machine, switching on a branch power switch of a common desulfurization-to-limestone branch of the # 2 machine through a DCS (Distributed Control System), and then starting the # 1 machine according to a program; and (3) the # 1 machine is started, and if the # 2 machine does not operate, the standby transformer provides a power supply for starting. After transformation, the technology well solves the problem that another unit is started and stopped by using the plant power source of the operating unit, not only reduces the purchased power, but also enriches the calling mode of the plant power, changes the situation that the traditional plant power must be purchased, and double units mutually provide the plant power of respective units, can realize'zero 'outsourcing of the plant power, and greatly saves the production cost. Practical verification shows that the scheme of the invention has good practicability in actual production, and great economic benefits are generated after technical transformation.

Description

【Technical field】 [0001] The invention belongs to the technical field of circuit wiring, and in particular relates to a flexible wiring method for power consumption in thermal power plants. 【Background technique】 [0002] The 10kV public desulfurization busbar section (C section) of the two high-voltage public desulfurization split transformers in the whole plant has been linked to ensure the flexibility of operation. Even during the shutdown of one unit, the public load and the load of some units located in this section still can operate normally. However, since the 10kV working bus section of the high-voltage factory working split transformer of the unit is only provided by the high-voltage backup transformer, the load of the 10kV working bus section needs to be supplied by the outsourced power provided by the high-voltage backup transformer every time the unit starts / stops. Finish. The start / stop of the unit is divided into the following situations: first, one unit is r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/04H02J9/04
CPCH02J3/04H02J9/04
Inventor 谢文超林建华严山清王飞宇
Owner 华润电力(贺州)有限公司
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