CN110718034A - High-voltage direct-current transmission converter valve tower with fire monitoring function - Google Patents
High-voltage direct-current transmission converter valve tower with fire monitoring function Download PDFInfo
- Publication number
- CN110718034A CN110718034A CN201910854452.9A CN201910854452A CN110718034A CN 110718034 A CN110718034 A CN 110718034A CN 201910854452 A CN201910854452 A CN 201910854452A CN 110718034 A CN110718034 A CN 110718034A
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- valve
- valve tower
- detection module
- fire
- tower
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Abstract
The invention relates to a high-voltage direct-current transmission converter valve tower with a fire monitoring function, which comprises at least two valve layers, a shielding cover and a detection module, wherein the shielding cover is arranged above the valve layer at the top end of the valve layer; the gas temperature sensor and/or the smoke sensor are arranged in the shielding case. The detection module is arranged in the top valve layer shielding case, and can quickly detect the temperature change by utilizing the natural rising characteristic of hot air flow, so that the early-stage fire accident can be quickly early warned, and the fire early warning real-time performance and reliability of the valve tower are improved.
Description
Technical Field
The invention relates to a high-voltage direct-current transmission converter valve tower with a fire monitoring function.
Background
The converter valve is one of core equipment of high-voltage direct-current transmission and is used for completing alternating-current and direct-current conversion, converting alternating current into direct current in a rectifying station and converting the direct current into alternating current in an inverting station. At present, most direct current transmission projects which are put into operation and are under construction are in a +/-800 kV extra-high voltage class, and in addition, a small part of the +/-1100 kV extra-high voltage class. The converter valve equipment is internally composed of various electrical elements, works in a severe high-voltage and high-current operating environment for a long time, is influenced by various factors such as aging of the elements and high-voltage impact, can generate hidden dangers of fire accidents caused by heating of the elements in the converter valve in the long-term operation process, can cause shutdown of a direct-current transmission project, and can cause fire safety accidents of the converter valve or a valve hall under severe conditions.
In order to reduce the fire-fighting accident that equipment components and parts damage and lead to, the measure of taking at present has:
(1) the operation and maintenance personnel hold the thermal imaging equipment to observe the problems of all positions of the valve tower, so that the working strength of the operation and maintenance personnel is increased, and the safety problem is caused to the operation and maintenance personnel when an accident occurs during inspection;
(2) through machine detection of imaging equipment, monitoring of temperature and fire of a converter valve tower by a converter station is mainly realized by patrolling through holders of an infrared camera and a video camera which are installed on the wall of the inner side of a valve hall, the state of the outer side of the valve tower can only be monitored, the imaging equipment on the side wall of the valve hall is relatively far away from a converter valve component structure, and more dead angles exist in measurement due to the valve tower structure.
The measures cannot timely and accurately acquire dynamic parameters inside the valve tower, so that the monitoring effect is poor, and whether a fire disaster occurs in the valve tower cannot be effectively and reliably judged.
Disclosure of Invention
The invention aims to provide a high-voltage direct-current transmission converter valve tower with a fire monitoring function, and the problem that whether a fire occurs in the valve tower in the prior art is poor in fire monitoring effect is solved.
In order to achieve the purpose, the invention provides a high-voltage direct-current transmission converter valve tower with a fire monitoring function, which comprises at least two valve layers, a shielding cover and a detection module, wherein the shielding cover is arranged above the valve layer at the top end of the high-voltage direct-current transmission converter valve tower; the gas temperature sensor and/or the smoke sensor are arranged in the shielding case.
Has the advantages that: the detection module is arranged in the top valve layer shielding case, and can quickly detect the temperature and/or smoke condition by utilizing the natural rising characteristic of hot air flow, so that the early-stage fire hazard can be quickly warned, and the fire warning real-time performance and reliability of the valve tower are improved.
Further, gas temperature sensor and/or smoke transducer set up on the shield cover inside wall, avoid the installation of top valve layer because each valve layer has been avoided, can be so that simple to operate, the later stage of also being convenient for is to maintenance, the maintenance of each valve layer components and parts.
Furthermore, the power end of the detection module is connected with the control power supply of the top valve layer. Get the electricity through the top valve layer directly for mounting structure is simple.
Furthermore, the detection module also comprises a battery, the battery can be used as a standby power supply, and the auxiliary control power supply supplies power to the detection module and also can independently supply power to the detection module.
Furthermore, the alarm device is also arranged and fixed on the edge part of the upper part of the shielding cover. The operation and maintenance personnel can conveniently find the operation and maintenance personnel in time and carry out corresponding operation.
Furthermore, the alarm is arranged at four corners of the outer side of the shielding case, and valve devices are not arranged at the four corners and are arranged at intervals with the valve layer.
Drawings
FIG. 1 is a schematic diagram of a valve tower configuration of the present invention;
fig. 2 is a flow chart of fire monitoring according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.
The invention has the main conception that the detection module is arranged in the shielding cover at the top of the valve tower, if a fire occurs, the gas temperature sensor in the detection module at the top can detect the change of temperature based on the natural and rapid rising characteristic of hot air flow, and the smoke sensor can detect whether smoke exists or not, so that the smoke sensor can detect the smoke in advance at the early stage of the fire, thereby facilitating the advanced treatment of operation and maintenance personnel, improving the timeliness and reliability of fire early warning when the valve tower occurs, and ensuring the operation safety of the valve tower.
Valve tower embodiment:
the high-voltage direct-current transmission converter valve tower comprises a plurality of valve layers, a shielding cover is arranged above the valve layer on the top end of the valve tower, the valve tower comprises a detection module, the detection module comprises a controller, four gas temperature sensors and four smoke sensors, the controller is respectively connected with the gas temperature sensors and the smoke sensors, and the gas temperature sensors can be non-contact infrared thermometers and can also be contact thermistors.
In this embodiment, the gas temperature sensor is an infrared thermometer, because any object can generate infrared radiation, including the hot air flow generated by a fire, certainly, because the infrared thermometer is a non-contact measurement, the gas temperature sensor can detect the hot air flow in advance through a radiation mode when generating the hot air flow, which is beneficial to timely finding of fire hazard, but the contact thermistor outputs corresponding temperature only when the hot air flow flows through the thermistor, and the detection result response is slow.
As other embodiments, the detection module comprises a gas temperature sensor or comprises a smoke sensor.
The infrared thermometer and the smoke sensor are both arranged in the shielding case. Specifically, infrared radiation thermometer and smoke sensor are all fixedly mounted on the side wall of the inner side of the shielding case, and are specifically mounted at four corners of the edge of the upper portion of the shielding case.
If a certain component of the converter valve is aged and has high temperature or generates sparks, hot airflow of the converter valve rises through a gap of the valve layer and a gap between the periphery of the valve layer and the valve hall under the blocking of the valve component, the valve layer can influence the flowing of the hot airflow due to the action of the valve component and simultaneously influence the radiation of infrared rays, so that the converter valve is not easy to be quickly detected by an infrared thermometer, and the infrared thermometer and a smoke sensor are arranged at four corners of the edge of the shielding cover.
Infrared thermodetector and smoke transducer install at four angles at the edge, this four angles departments do not install the valve device, have the interval with the valve layer, belong to idle unobstructed space, can not influence the electrical characteristics of converter valve itself, make simple to operate like this, when keeping in the later stage and regularly reinspecting, can not influence the operation of valve layer device again, can not influence the detection use of sensor in operation process, consequently, infrared thermodetector and smoke transducer testing result's reliability has been guaranteed.
In addition, install and to realize covering the valve tower full angle at four angles, can be fast accurate early warning valve tower inside early fire accident, can compensate current monitoring means can not monitor inside the valve tower, the distance leads to the monitoring effect poor not enough, promotes the monitoring effect of converter valve tower fire hazard.
The infrared thermometer detects the temperature of a valve device in the tower in real time, and when the detected temperature is greater than a set temperature threshold value, the temperature is judged to be over-temperature, the hidden danger of fire disaster is caused, and the alarm is triggered to output an alarm signal.
And the smoke sensor detects whether fire smoke exists in the air flow naturally rising from the bottom of the valve tower in real time, and when the detected smoke concentration is greater than a set concentration threshold value, the smoke sensor judges that hidden danger of fire occurs and triggers the alarm to output an alarm signal.
The infrared thermometer and the smoke sensor work simultaneously to monitor the fire hazard in the valve tower in real time, and as shown in fig. 2, the infrared thermometer and the smoke sensor can independently trigger the alarm to output an alarm signal for operation and maintenance personnel to check and process. Specifically, the method comprises the following steps:
firstly, a gas temperature sensor and a smoke sensor are installed on the inner side of a shielding cover on the top layer of a valve tower, and alarms are installed at four corners of the outer edge of the shielding cover.
Then, the detection module in the valve tower starts to detect the temperature and smoke concentration in the valve tower:
when the detected temperature is greater than a set temperature threshold value, judging that the temperature is over-temperature and a fire hazard occurs, triggering an alarm to output an alarm signal to remind operation and maintenance personnel to perform patrol treatment in time so as to avoid the fire hazard; otherwise, the alarm is closed, which indicates that no fire hazard exists;
when the detected smoke concentration is greater than a set concentration threshold value, judging that hidden danger of fire occurs, triggering an alarm to output an alarm signal, reminding operation and maintenance personnel to perform patrol treatment in time, and avoiding the occurrence of fire; otherwise, the alarm is closed, which indicates that no fire hazard exists;
the temperature and the smoke sensing concentration are detected simultaneously, when any condition is met, the alarm can be triggered, and when the two conditions are not met, the alarm signal can not be output, so that the accuracy of fire early warning is improved, and the safety in the valve tower is ensured.
The alarm is fixedly arranged on the edge part of the upper part of the shielding cover, specifically at four corners of the outer edge of the shielding cover, and comprises a sound alarm and a light alarm, and the reliability of the alarm output is improved through the alarm output of sound and light dualization. For example: when the infrared thermometer detects and judges that the hidden danger of fire happens, the alarm signal output by the alarm is a whistle sound of long ringing, and when the smoke sensor detects and judges that the hidden danger of fire happens, the alarm signal output by the alarm is flashing light, so that operation and maintenance personnel can quickly take corresponding measures according to different alarm signals; in other embodiments, when the infrared thermometer and the smoke sensor detect and judge that the fire hazard occurs, both the infrared thermometer and the smoke sensor can send out sound and light alarm signals at the same time.
The power supply end of the detection module is connected with the control power supply of the top valve layer, and the control power supply of the top valve layer directly gets electricity; the power supply end of the detection module is a battery which is directly connected, and the battery is isolated from the high potential of the valve tower, so that a power supply loop can be prevented from being built in a primary high-voltage loop again; the power end of the detection module can be simultaneously connected with the control power supply and the battery of the top valve layer, the control power supply of the battery auxiliary top valve layer supplies power for the detection module, and the power supply reliability of the detection module can be improved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present application, various changes, modifications or equivalents of the embodiments of the present application can be made, and these changes, modifications or equivalents are within the protection scope of the claims of the present invention.
Claims (6)
1. The high-voltage direct-current transmission converter valve tower with the fire monitoring function comprises at least two valve layers, wherein a shielding cover is arranged above the top valve layer, and the high-voltage direct-current transmission converter valve tower is characterized by further comprising
The detection module comprises a controller, the detection module further comprises at least one gas temperature sensor and/or at least one smoke sensor, and the controller is connected with the gas temperature sensor and/or the smoke sensor; the gas temperature sensor and/or the smoke sensor are arranged in the shielding case.
2. The HVDC converter valve tower with fire monitoring function of claim 1, wherein the gas temperature sensor and/or smoke sensor is arranged on an inner side wall of the shielding cage.
3. The HVDC converter valve tower of claim 1, wherein a power supply end of the detection module is connected to a control power supply of the top valve layer.
4. The HVDC converter valve tower with fire monitoring function of claim 1 or 3, wherein the detection module further comprises a battery.
5. The valve tower for HVDC converter valves with fire monitoring function of claim 1, further comprising an alarm mounted on an edge portion fixed to an upper portion of the shield case.
6. The HVDC converter valve tower with fire monitoring function of claim 5, wherein the alarm is arranged at four corners outside the shielding case, and the four corners are not provided with valve devices and are spaced from the valve layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910854452.9A CN110718034A (en) | 2019-09-10 | 2019-09-10 | High-voltage direct-current transmission converter valve tower with fire monitoring function |
| PCT/CN2020/095186 WO2021047223A1 (en) | 2019-09-10 | 2020-06-09 | High-voltage direct current power transmission converter valve tower provided with fire monitoring functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910854452.9A CN110718034A (en) | 2019-09-10 | 2019-09-10 | High-voltage direct-current transmission converter valve tower with fire monitoring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110718034A true CN110718034A (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910854452.9A Pending CN110718034A (en) | 2019-09-10 | 2019-09-10 | High-voltage direct-current transmission converter valve tower with fire monitoring function |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110718034A (en) |
| WO (1) | WO2021047223A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112270071A (en) * | 2020-10-05 | 2021-01-26 | 国网新疆电力有限公司电力科学研究院 | Fault fire simulation method for converter valve tower electrical equipment |
| WO2021047223A1 (en) * | 2019-09-10 | 2021-03-18 | 许继集团有限公司 | High-voltage direct current power transmission converter valve tower provided with fire monitoring functions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021047223A1 (en) * | 2019-09-10 | 2021-03-18 | 许继集团有限公司 | High-voltage direct current power transmission converter valve tower provided with fire monitoring functions |
| CN112270071A (en) * | 2020-10-05 | 2021-01-26 | 国网新疆电力有限公司电力科学研究院 | Fault fire simulation method for converter valve tower electrical equipment |
| CN112270071B (en) * | 2020-10-05 | 2023-06-27 | 国网新疆电力有限公司电力科学研究院 | Method for simulating fault fire of converter valve tower electrical equipment |
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| Publication number | Publication date |
|---|---|
| WO2021047223A1 (en) | 2021-03-18 |
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