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A Design Method for Power Supply of Steam Turbine Protection System

A protection system and design method technology, applied in mechanical equipment, emergency power arrangement, electrical components, etc., can solve problems such as refusal to operate, protection malfunction, etc., and achieve the effect of stable and reliable power supply, safe and reliable power supply

Active Publication Date: 2020-04-21
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention proposes a design method for the power supply of the steam turbine protection system, which can solve the risk of protection malfunction or refusal to operate due to design defects of the protection system power supply for the main equipment of the steam turbine

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  • A Design Method for Power Supply of Steam Turbine Protection System
  • A Design Method for Power Supply of Steam Turbine Protection System
  • A Design Method for Power Supply of Steam Turbine Protection System

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Embodiment Construction

[0039] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the...

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Abstract

The invention discloses a method for designing a steam turbine protective system power source. The method comprises the following steps that 1, power sources of a main programmable controller and an auxiliary programmable controller are each designed to be the two modes of switching and non-switching; 2, power sources of I / O clamping pieces are supplied in a concentrated mode through a bottom plate; 3, power source inquiry of a switching value input contact and an intra-system dry contact adopts redundant arrangement; 4, a power source of a tripping electromagnetic valve adopts the two modesof switching and non-switching; 5, power sources of illumination, a fan, an overhaul socket in a steam turbine protection control cabinet are independently supplied; and 6, a power source alarm system is supplied by an independent power source. According to the method for designing the steam turbine protective system power source, the typical, normative and practical design method is suitable fora large steam turbine protective system power source, and the risk problem of protection maloperation or refuse operation of steam turbine main equipment caused by a protective system power source design defect is solved.

Description

technical field [0001] The invention relates to the technical field of power supply design, in particular to a design method for a power supply of a steam turbine protection system. Background technique [0002] With the rapid development of the economy, the demand for electricity is also increasing day by day. The peak-shaving and frequency-regulating capability of the generating set is directly related to the stability and safety of the power grid, and the safe and reliable operation of the generating set itself is the basis for its power generation, peak-shaving, and frequency-regulating capabilities. , therefore, the operation reliability of the protection system of power generation equipment is very important. However, the reality is that due to the design defects of individual products, under certain conditions, it may cause the protection to malfunction or refuse to operate. Also fails, so that the two controllers completely lose power, etc. When one power supply fai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D21/00H02J9/06
CPCF01D21/00H02J9/06
Inventor 王文宽姚常青李克雷
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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