CN111462931A - Switching method for manual control signals of main and auxiliary control rooms - Google Patents
Switching method for manual control signals of main and auxiliary control rooms Download PDFInfo
- Publication number
- CN111462931A CN111462931A CN202010299195.XA CN202010299195A CN111462931A CN 111462931 A CN111462931 A CN 111462931A CN 202010299195 A CN202010299195 A CN 202010299195A CN 111462931 A CN111462931 A CN 111462931A
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- switching
- manual control
- imc
- irs
- extension relay
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/02—Manual control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
The invention discloses a method for switching manual control signals of a main control room and an auxiliary control room, which comprises the following steps: a power supply and a switching loop are arranged in the reactor protection system, and the power supply is used for supplying power to the manual control signal; the switching circuit is connected in series in the circuit of the power supply and comprises a switching switch and an extension relay, the switching switch controls the extension relay, a normally closed contact of the extension relay is connected with a manual control signal of the IMC, a normally open contact of the extension relay is connected with a manual control signal of the IRS, the extension relay receives a switching signal and controls the power-on and power-off of the extension relay based on the switching signal, and then the relay contact connected in series in the IMC or IRS manual control circuit is opened or closed, so that the switching of the manual control authority is realized. The method realizes the IMC/IRS switching which is simpler and more reliable in loop, simplifies the complexity of the reactor protection system equipment and improves the reliability of signal switching.
Description
Technical Field
The invention relates to the field of nuclear power plant instruments and control, in particular to a manual control signal switching method used between a nuclear power plant main control room (IMC) and a remote shutdown station (IRS, also called as an auxiliary control room).
Background
The main control room of a nuclear power plant is an important area for monitoring and operation by operators, and is provided with manual control and display equipment, so that a nuclear power unit can be kept in a steady power operation state or brought into and kept in a safe state. In order to cope with the unavailability of the main control room, a remote shutdown station is provided as a backup. In the event that an operator cannot stay in the main control room (e.g., in the event of a fire), the reactor can be put into a hot shutdown state using the control means and data display provided by the remote shutdown station. Then, when the operation is performed from the main control room to the remote shutdown station, on one hand, the false sending of an action signal (such as a safety injection signal, a containment vessel spraying signal, etc.) from the main control room should be avoided, and on the other hand, the control authority (such as a reset/lockout operation for reactor power reduction, etc.) needs to be switched to the remote shutdown station, so a reliable IMC/IRS switching manner needs to be set.
The conventional nuclear power station reactor protection system adopts a switching mode as follows: a relatively complex circuit is designed for each function to interlock a manual signal and a change-over switch, so that the aim of controlling at a remote shutdown station when necessary is fulfilled.
Disclosure of Invention
The invention aims to design a more reliable and simplified mode, realizes the switching of a manual control signal of a reactor protection system from a main control room to a remote shutdown station, simplifies the complexity of equipment of the reactor protection system and improves the reliability of signal switching.
In order to achieve the above object, the present invention provides a method for switching manual control signals, comprising:
a 48V direct-current power supply and a switching loop are arranged in the reactor protection system, and the power supply is used for supplying power to the manual control signal; the switching circuit is connected in series in the circuit of power, and the switching circuit includes change over switch and extension relay, change over switch control extension relay, and the normally closed contact of extension relay is connected with IMC's manual control signal, and normally open contact is connected with IRS's manual control signal, and the switching signal that extension relay received change over switch and sent, based on switching signal control its own getting electric and losing electric, and then lead to opening or closing of the relay contact of establishing ties in IMC or IRS manual control circuit to realize the switching of control authority.
In order to realize the switching function more accurately and reliably, a special and reliable 48V direct current power supply is designed in the reactor protection system and used for supplying power to manual control signals from a main control room and a remote shutdown station, and an IMC/IRS switching loop is connected in series in the special power supply loop, so that all relevant control signals are switched by controlling the on-off of the power supply. The IMC/IRS switching circuit consists of an IMC/IRS switching switch and an extension relay, wherein the IMC/IRS switching switch controls the extension relay, the normally closed contact of the extension relay is connected with an IMC manual control signal, and the normally open contact of the extension relay is connected with an IRS manual control signal. When the IMC/IRS switch is switched to an IMC position, the extension relay is powered off, the relay contact in series in the IMC manual control loop is closed, and conversely, the relay contact in series in the IRS manual control loop is opened, at the moment, the IMC manual operation loop is switched on, and the IRS manual operation loop is switched off; when the IMC/IRS switch is in an IRS position, the extension relay is electrified, the relay contact in series in the IRS manual control loop is closed, and on the contrary, the relay contact in series in the IMC manual control loop is opened, at the moment, the IRS manual operation loop is connected, and the IMC manual operation loop is disconnected. The switching of the IMC and IRS control authority is realized through the mode.
Preferably, when the change-over switch is switched to the IMC position, the extension relay is de-energized, the manual operation loop of the IMC is switched on, and the IRS manual operation loop is switched off; when the change-over switch is switched on at the IRS position, the extension relay is electrified, the manual operation loop of the IRS is switched on, and the IMC manual operation loop is switched off.
Preferably, the manual control signals are from a main control room and a remote shutdown station.
Preferably, the IMC/IRS switching loop comprises an IMC/IRS switch and an extension relay.
Preferably, the power supply is a 48V direct current power supply.
One or more technical solutions provided by the present application have at least the following technical effects or advantages:
the invention realizes an IMC/IRS switching mode with simpler circuit and more reliable loop by serially connecting switching contacts on a signal power supply loop, simplifies the complexity of reactor protection system equipment and improves the reliability of signal switching.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;
FIG. 1 is a schematic diagram of IMC/IRS control signal switching of a reactor protection system.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring to fig. 1, the embodiment of the present invention designs a special and reliable 48V dc power supply in the reactor protection system for supplying power to the manual control signals from the main control room and the remote shutdown station. The IMC/IRS switching loop is connected in series in the special power supply loop, so that all relevant control signals are switched by controlling the on-off of the power supply. The IMC/IRS switching circuit consists of an IMC/IRS switching switch and an extension relay, wherein the IMC/IRS switching switch controls the extension relay, the normally closed contact of the extension relay is connected with an IMC manual control signal, and the normally open contact of the extension relay is connected with an IRS manual control signal. The working principle is as follows: when the IMC/IRS switch is switched to the IMC position, the extension relay is powered off, at the moment, the manual operation loop of the IMC is switched on, and the manual operation loop of the IRS is switched off; when the IMC/IRS switch is turned on at the 'IRS' position, the extension relay is electrified, at the moment, the manual operation loop of the IRS is switched on, and the manual operation loop of the IMC is switched off. The switching of the IMC and IRS control authority is realized through the mode.
The invention adopts a mode of switching signal loop power supply to implement the switching of the control authority of the main control room and the remote shutdown station. The invention provides a switching processing mode of manual control signals of a reactor protection system, which is different from the traditional nuclear power project, simplifies the complexity of equipment of the reactor protection system, and improves the reliability of signal switching.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A method for switching a manual control signal of a main control room and an auxiliary control room is characterized by comprising the following steps:
a power supply and a switching loop are arranged in the reactor protection system, and the power supply is used for supplying power to the manual control signal; the switching circuit is connected in series in the circuit of the power supply, the switching circuit comprises a switching switch and an extension relay, the switching switch controls the extension relay, a normally closed contact of the extension relay is connected with a manual control signal of a main control room, a normally open contact of the extension relay is connected with a manual control signal of an auxiliary control room, the extension relay receives a switching signal sent by the switching switch, and the switching signal controls the power on and power off of the extension relay based on the switching signal, so that the switching of the manual control authority is realized by the opening or closing of a relay contact connected in series in the IMC or IRS manual control circuit.
2. The switching method of the manual control signal of the main and auxiliary control room of claim 1, wherein when the switch is turned to the IMC position, the extension relay is de-energized and the manual operation loop of the IMC is turned on; when the change-over switch is switched on at the IRS position, the extension relay is electrified, and a manual operation loop of the IRS is switched on.
3. The method for switching between master and slave control room manual control signals according to claim 1, wherein the manual control signals are from a master control room and a remote shutdown station.
4. The method for switching the main and auxiliary control chamber manual control signal according to claim 1, wherein the switching loop is an IMC/IRS switching loop, and the IMC/IRS switching loop comprises an IMC/IRS switch and an extension relay.
5. The method for switching the main and auxiliary control room manual control signal according to claim 1, wherein the power supply is a 48V dc power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299195.XA CN111462931B (en) | 2020-04-16 | 2020-04-16 | Switching method for manual control signals of main and auxiliary control rooms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010299195.XA CN111462931B (en) | 2020-04-16 | 2020-04-16 | Switching method for manual control signals of main and auxiliary control rooms |
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| Publication Number | Publication Date |
|---|---|
| CN111462931A true CN111462931A (en) | 2020-07-28 |
| CN111462931B CN111462931B (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010299195.XA Active CN111462931B (en) | 2020-04-16 | 2020-04-16 | Switching method for manual control signals of main and auxiliary control rooms |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114826365A (en) * | 2022-04-29 | 2022-07-29 | 中国信息通信研究院 | Switch signaling indication method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000017888A1 (en) * | 1998-09-18 | 2000-03-30 | Westinghouse Electric Company Llc | Digital plant protection system |
| CN2932772Y (en) * | 2006-07-30 | 2007-08-08 | 齐琨 | Two-way device to avoid erroneous switch opening/closing inside substation |
| CN103400623A (en) * | 2013-07-30 | 2013-11-20 | 中广核工程有限公司 | Protection method and system for digitalized instrument control diversity of nuclear power station |
| CN108053899A (en) * | 2017-12-04 | 2018-05-18 | 中国船舶重工集团公司第七〇九研究所 | A kind of reactor shutdown breaker test circuit |
-
2020
- 2020-04-16 CN CN202010299195.XA patent/CN111462931B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000017888A1 (en) * | 1998-09-18 | 2000-03-30 | Westinghouse Electric Company Llc | Digital plant protection system |
| CN2932772Y (en) * | 2006-07-30 | 2007-08-08 | 齐琨 | Two-way device to avoid erroneous switch opening/closing inside substation |
| CN103400623A (en) * | 2013-07-30 | 2013-11-20 | 中广核工程有限公司 | Protection method and system for digitalized instrument control diversity of nuclear power station |
| CN108053899A (en) * | 2017-12-04 | 2018-05-18 | 中国船舶重工集团公司第七〇九研究所 | A kind of reactor shutdown breaker test circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114826365A (en) * | 2022-04-29 | 2022-07-29 | 中国信息通信研究院 | Switch signaling indication method and device |
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| CN111462931B (en) | 2021-11-30 |
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