CN103163846B - Method and device of automatic control of heating and ventilation of transformer substation - Google Patents
Method and device of automatic control of heating and ventilation of transformer substation Download PDFInfo
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- CN103163846B CN103163846B CN201110416049.1A CN201110416049A CN103163846B CN 103163846 B CN103163846 B CN 103163846B CN 201110416049 A CN201110416049 A CN 201110416049A CN 103163846 B CN103163846 B CN 103163846B
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Abstract
Provided is a method of automatic control of heating and ventilation of a transformer substation. Temperature signals of a storage battery room, a main transformer room, a power distribution room, a relay room, an electric reactor room and a control room, the hydrogen leakage signals of the storage battery room and the wind pressure signals of the outlet of a fan are respectively detected in real time, and the detected temperature signals, the hydrogen leakage signals and the wind pressure signals are all sent to a control system. The control system outputs starting and stopping signals to the control module and the communication module of each heating and ventilation device, and the control module and the communication module of each heating and ventilation device correspondingly control on-site equipment to move according to received starting and stopping signals. At the same time, the control module and the communication module of each heating and ventilation device send own starting and stopping states to the control system. The method and the device of the automatic control of the heating and the ventilation of the transformer substation achieve a centralized control mode of a heating and ventilation axial flow fan, a roof fan, an air conditioner, an electric heater and other equipment operated manually on site of the transformer substation for the first time, and automatic operation is achieved according to environmental requirements and interlocking requirements.
Description
Technical field
The present invention relates to a kind of intelligent substation special heating and ventilation equipment automatic control system, belong to transformer station's HVAC and automatic control technology field.
Background technology
Conventional substation HVAC system mainly comprises: arrange axial flow blower at the electric room such as battery room, transformer room and GIS and cable tunnel, generally adopts mechanical exhaust and natural air inlet mode, waste heat in daily ventilation discharge chamber, also doublely does accident air draft.Daily operation management is generally by operator on duty's artificial judgment blower fan unlocking condition, and Manual local operates blower fan start and stop; Split-type air conditioner is established, cooling in summer and winter heating in the room such as pulpit, relay bungalow.Daily operation management generally by operator on duty's artificial judgment air-conditioning unlocking condition, the start and stop of Manual local operating air conditioner; Arrange electric heater winter heating at water plant, Manual local is opened, long-time running.
In May, 2009, national grid public affairs propose bases oneself upon autonomous innovation, builds the developing goal of intelligent grid.For implementing this strategic plan, State Grid Corporation of China's Intelligent electric wet end is combined each research institute and has jointly been worked out " intelligent substation fire protection technology ".In directive/guide, following functional requirement is made to the heating and ventilation equipment in transformer substation auxiliary facility: the environment timing detection functions such as substation equipment running temperature, humidity should be possessed, realize air-conditioning, blower fan, the Long-distance Control of well heater or the intelligent linkage with temperature and humidity controller, optimize substation management.
Therefore, the special heating and ventilating equipment control system of a kind of brand-new intelligent substation is designed and developed, by very with practical value and promotion prospect.
Summary of the invention
The object of the invention is: design a kind of brand-new intelligent substation heating and ventilating equipment control system; can centralized watch and to control environment temperature and heating and ventilating equipment; make the equipment of original local manual operation can realize automatically controlling and interlock protection, improve transformer station's HVAC Systematical control level.
For achieving the above object, the present invention is by the following technical solutions:
A kind of transformer station HVAC autocontrol method, in real time from battery room, main transformer room, power distribution station room, relay bungalow, reactor room and pulpit difference detected temperatures signal, the leakage hydrogen signal of battery room and the wind pressure signal of fan outlet, and be all sent to control system by detecting the temperature signal, leakage hydrogen signal and the wind pressure signal that obtain; Control system exports start stop signal in each heating and ventilating equipment control module and communication module, and described heating and ventilating equipment control module and communication module correspondingly control device action on the spot according to the start stop signal received; Meanwhile, the start and stop status information of self is also sent to control system by each heating and ventilating equipment control module and communication module.
Under accident conditions, control system sends interlock requirement information to each heating and ventilating equipment control module, and each heating and ventilating equipment control module accepts the signal of fire alarm system simultaneously, makes all heating and ventilating equipment control modules be in protected mode.
The temperature signal of collection, the start and stop state of leaking hydrogen signal, wind pressure signal and each heating and ventilating equipment control module, air-conditioning communication module information are all sent to operator station by described control system, realize remote monitoring function.
A kind of transformer station HVAC automaton, it comprises:
Checkout equipment on the spot, comprises the temperature transmitter being positioned at battery chamber, main transformer room, power distribution station room, relay bungalow, reactor room, pulpit, and is positioned at the leakage hydrogen detector of battery room, each fan outlet wind pressure measuring meter;
Control system, described control system is made up of DCS or PLC, and being placed in controller cabinet, rack receives each temperature transmitter and leaks hydrogen detector, wind pressure measuring meter and each equipment feedback signal, and output instruction signal is to the control module of controlled device on the spot or communication module;
Control module, be control loop and the backfeed loop of blower fan and electric heater, be loaded in concentrated power cabinet or local control box, make concentrated power cabinet or local control box have distant place start and stop and feedback interface, each heating and ventilating equipment control module correspondence controls a kind of local control unit;
Local control unit, comprises axial flow blower, electric heater, roof ventilator;
Communication module, is mainly used in air-conditioning equipment, connects each air-conditioning to control system by communication cable, and each air-conditioning communication module correspondence controls an air-conditioning.
Each HVAC control module in described power and control loop is all connected with transformer station fire alarm system.
Described control system also with automation of transformation substations main website end communication, the operation conditions of control system can be reached administration and supervision authorities.
Adopt the present invention of technique scheme, have the following advantages:
(1) device first such as HVAC axial flow blower, roof ventilator, air-conditioning, electric heater of transformer station local manual operation is realized central controlled mode, and realization environmentally requires and interlock requirement runs automatically.
(2) realize the centralized control of the equipment such as blower fan, electric heater, need the control box of power cabinet or the dispersion of concentrating, increase control loop and backfeed loop (general name control module) wherein, to realize the function that can accept distant place instruction.
(3) what realize air-conditioning equipment includes this system centralized control in, needs to install communication module additional in air-conditioning, and installs corresponding communication fastener additional at centralized control cabinet, and its parameter is all uploaded, to realize the function that can accept distant place setting.
(4) full intelligent design, is equipped with advanced modularization industrial computer system, have automatically, manually, display, the function such as communication, meet the demand for development of intelligent substation.
Therefore, the heating and ventilating equipment system that the present invention fundamentally changes transformer station forms, constructs and management mode, and whole year operation realizes Based Intelligent Control, and lower operations staff's labour intensity, security and economy are improved, and is suitable for large-scale production application.
Accompanying drawing explanation
Fig. 1 is control principle block diagram of the present invention.
Fig. 2 is battery room air-blower control logical diagram.
Fig. 3 is axial flow blower control module figure.
Fig. 4 is motor feedback loop diagram.
Embodiment
As shown in Figure 1, a kind of transformer station HVAC autocontrol method, detected temperatures signal is distinguished in real time from battery room, main transformer room, power distribution station room, relay bungalow, reactor room and pulpit, cable tunnel, and battery room leaks hydrogen signal and each fan outlet blast, and be all sent to control system by detecting each temperature signal obtained with leakage hydrogen signal, wind pressure signal.The programmable controller PLC with communication function or distributed monitoring control system is adopted to control in control system, and programme according to control overflow logical and, export start stop signal in each heating and ventilating equipment control module and communication module, above-mentioned heating and ventilating equipment control module and communication module and correspondingly control local control unit action according to the start stop signal received; Meanwhile, the start and stop status information of self is also sent to control system by each heating and ventilating equipment control module and communication module.Like this, present invention achieves the automatic control of whole transformer station heating and ventilating equipment, control system realizes monitoring equipment start-stop, operating condition and adjusting and accident treatment by operator station.。In operator station, there are several operating display frames, can carry out operating and the operation of surveillance to whole control system by picture.
In addition, under accident conditions, control system sends interlock requirement information to each heating and ventilating equipment control loop, and each heating and ventilating equipment control module accepts the signal of fire alarm system simultaneously, makes all heating and ventilating equipment control modules be in protected mode.In addition, all for control system Information Monitorings and self information are communicatively all sent to automation of transformation substations main website end by control system, only for ease of tension management and calling data, are not used in operation.
The control overflow logic that in the present invention, control system adopts is specially:
A, battery room: when indoor temperature is greater than 25 DEG C, blower fan, direct-flow air conditioner are opened and are in cold wind state; When temperature reaches 20 DEG C, blower fan, air-conditioning stop; Now, air feed shutter is normally open, should consider new wind load when air conditioner refrigerating amount is selected.
When indoor temperature is less than 15 DEG C, blower fan, direct-flow air conditioner are opened and are in hot blast state; When temperature reaches 20 DEG C, blower fan, air-conditioning stop.Now, air feed shutter is normally open, should consider new wind load when air conditioner refrigerating amount is selected.
Density of hydrogen monitoring device is established in indoor, and concentration reaches restriction and opens blower fan, and air-conditioning closes.
The fault of automatic detection blower fan, air-conditioning, alerting signal reaches control system.When accumulator or air-condition faults time, open blower fan, close air-conditioning.Battery room blower fan should arrange for subsequent use, percentage reserve 2x50%, a Fans fault or blast too low, open standby fan.
B, main transformer room: transformer room's air feed shutter window is often opened, and when indoor temperature reaches 42 DEG C, blower fan leaves; When after fan operation, indoor temperature reaches 39 DEG C, blower fan closes.
C, power distribution station and reactor room: air feed shutter window is often opened, when indoor temperature reaches 35 DEG C, blower fan leaves; When after fan operation, indoor temperature reaches 30 DEG C, blower fan closes.
D, GIS and cable tunnel: blower fan often leaves, for subsequent use; Detect and teletransmission failure alarm signal, daily ventilation is no less than 6 times/h.
E, pulpit, relay bungalow: temperature sensor is established in indoor, when summer temp is greater than 28 DEG C, cold wind state opened by air-conditioning; When temperature reaches 25 DEG C, air-conditioning stops; When winter or transition season temperature are lower than 18 DEG C, hot blast state opened by air-conditioning; When temperature reaches 20 DEG C, air-conditioning stops.
For battery room, logical diagram as indicated with 2.
As shown in Figure 2, a kind of transformer station HVAC automaton, by control system 1 and on the spot checkout equipment, control module 5 and on the spot controlled device form.
Wherein, checkout equipment comprises the temperature transmitter 3 being positioned at battery chamber, main transformer room, power distribution station room, relay bungalow, reactor room, pulpit on the spot, and is positioned at the leakage hydrogen detector 4 of battery room, each fan outlet wind pressure measuring meter 13.
A control system 1 is set in transformer station, control system 1 is made up of DCS or PLC, and be placed in controller cabinet, rack receives each temperature transmitter 3 and leaks hydrogen detector 4, wind pressure measuring meter 13 and each equipment feedback signal, and output instruction signal is to the control module 5 of controlled device on the spot or communication module 6.
Control module 5 is control loop and the backfeed loop of blower fan and electric heater, be loaded in concentrated power cabinet or local control box 14, make concentrated power cabinet or local control box have distant place start and stop and feedback interface, each heating and ventilating equipment control module correspondence controls a kind of local control unit.Power cabinet/control box 14 accepts overhead control power supply and distributes to other power cabinet to control power supply, or adopts the control box of dispersion.The each axial flow blower power loop of assembling in bin, and install control module additional, make it the steering order that can accept control system and fire alarm system, and feedback device state.
Local control unit comprises axial flow blower 8, electric heater 9 and roof ventilator 11.
Communication module 6 is mainly used in air-conditioning equipment, 485 communication ports or field-bus interface plate is installed additional in air-conditioning, corresponding control system should have the fastener of identical communications protocol with it, connects each air-conditioning to control system 1 by communication cable, and each air-conditioning communication module correspondence controls an air-conditioning 10.
For an axial flow blower, concrete connection principle is as follows: as shown in Figure 3, Figure 4, and control loop adopts alternating current 220V power supply, corresponding to the station service electrical system of neutral ground, control power supply to draw from the A phase of 380V.AC power supply and the neutral line, 108 be that the sky of control power supply drives line loop into.109 trip signals formed for control loop, after making contactor 114 dead electricity, namely motor trips.110 is shutting-brake control loop, first select in control system mode by the spot/distant place change-over switch 112, wherein 104 be this control system export enabled instruction, when steering order sends, junction closure, relay K-1 coil is charged, K-1 normal opened contact in 109 is closed, then contactor 114 is charged, the junction closure of contactor in power loop, then power loop energising, motor start-up.111 is tripping operation control loop, select in control system mode by the spot/distant place change-over switch 112,105 be this control system export halt instruction, 106 for fire alarm system output halt instructions, when one of them sends instruction, then relay K-2 coil is charged, K-2 normally closed contact in 109 is disconnected, then contactor 114 dead electricity, in power loop, the contact of contactor disconnects, power loop power-off, motor stops.Relay K-3 is power monitoring relay, and when control loop dead electricity, the contact of K-3 teletransmission can report to the police 116 to control system.In addition, the contact co-bit of taking out from contactor feeds back 118 jumping position feedbacks 119 for teletransmission to control system, and on the spot/distant place change-over switch is used for sovereign right with control system conversion and control cashier's office in a shop, and has control feedback signal 117 teletransmission on the spot to control system.In figure 3, 101 is 380V.AC motor power loop, 102 is Motor Control loop, 103 is motor feedback loop, 104 carry out stop signal for this control system, 105 carry out stop signal for fire alarm system, 106 carry out enabling signal for this control system, 107 is power monitoring relay K-3, 108 is the inlet wire air switch in Motor Control loop, 109 is trip signal, 110 for controlling closing circuit, 11 for controlling trip(ping) circuit power monitor circuit, 112 is on the spot/distant place change-over switch CK, 113 is electrothermal relay RJ, 114 is A.C. contactor C, 115 is travel switch WK, 116 is that power fail feedback signal is to control system, 117 is control feedback signal on the spot to control system, 118 is that motor co-bit feedback signal is to control system, 119 for motor jumping position feedback signal is to control system, 120 is be with lamp switch knob HA cashier's office in a shop, 121 is be with lamp trip button TA cashier's office in a shop, 122 is closing relay K-1, 123 is tripping relay K-2.
Control system is also connected with automation of transformation substations main website end and operator station communication.In operator station, there are several operating display frames, can carry out operating and the operation of surveillance to whole control system by picture.
Claims (2)
1. transformer station's HVAC autocontrol method, it is characterized in that: in real time from battery room, main transformer room, power distribution station room, relay bungalow, reactor room and pulpit difference detected temperatures signal, the leakage hydrogen signal of battery room and the wind pressure signal of fan outlet, and be all sent to control system by detecting the temperature signal, leakage hydrogen signal and the wind pressure signal that obtain; Control system exports start stop signal in each heating and ventilating equipment control module and communication module, and described heating and ventilating equipment control module and communication module correspondingly control device action on the spot according to the start stop signal received; Meanwhile, the start and stop status information of self is also sent to control system by each heating and ventilating equipment control module and communication module;
Under accident conditions, control system sends interlock requirement information to each heating and ventilating equipment control module, and each heating and ventilating equipment control module accepts the signal of fire alarm system simultaneously, makes all heating and ventilating equipment control modules be in protected mode;
The temperature signal of collection, the start and stop state of leaking hydrogen signal, wind pressure signal and each heating and ventilating equipment control module, air-conditioning communication module information are all sent to operator station by described control system, realize remote monitoring function.
2. transformer station's HVAC automaton, is characterized in that, it comprises:
Checkout equipment on the spot, comprises the temperature transmitter (3) being positioned at battery chamber, main transformer room, power distribution station room, relay bungalow, reactor room, pulpit, and is positioned at the leakage hydrogen detector (4) of battery room, each fan outlet wind pressure measuring meter (13);
Control system (1), described control system is made up of DCS or PLC, and be placed in controller cabinet, rack receives each temperature transmitter (3) and leaks hydrogen detector (4), wind pressure measuring meter (13) and each equipment feedback signal, and output instruction signal is to the control module (5) of controlled device on the spot or communication module (6);
Control module (5), be control loop and the backfeed loop of blower fan and electric heater, be loaded in concentrated power cabinet or local control box (14), make concentrated power cabinet or local control box have distant place start and stop and feedback interface, each heating and ventilating equipment control module correspondence controls a kind of local control unit;
Local control unit, comprises axial flow blower (8), electric heater (9), roof ventilator (11);
Communication module (6), is mainly used in air-conditioning equipment, connects each air-conditioning to control system (1) by communication cable, and each air-conditioning communication module correspondence controls an air-conditioning (10);
Each HVAC control module in described power and control loop is all connected with transformer station fire alarm system;
Described control system also with automation of transformation substations main website end communication, the operation conditions of control system can be reached administration and supervision authorities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110416049.1A CN103163846B (en) | 2011-12-14 | 2011-12-14 | Method and device of automatic control of heating and ventilation of transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110416049.1A CN103163846B (en) | 2011-12-14 | 2011-12-14 | Method and device of automatic control of heating and ventilation of transformer substation |
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| Publication Number | Publication Date |
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| CN103163846A CN103163846A (en) | 2013-06-19 |
| CN103163846B true CN103163846B (en) | 2015-07-01 |
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| CN201110416049.1A Expired - Fee Related CN103163846B (en) | 2011-12-14 | 2011-12-14 | Method and device of automatic control of heating and ventilation of transformer substation |
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| CN104315670A (en) * | 2014-11-12 | 2015-01-28 | 国家电网公司 | Automatic temperature control device of distribution room |
| CN104898436A (en) * | 2015-04-21 | 2015-09-09 | 仪征祥源动力供应有限公司 | Concentrated automatic controller for scattered air conditioners |
| CN106292359A (en) * | 2016-07-29 | 2017-01-04 | 任春雷 | HVAC machine room intelligent control method |
| CN107045294A (en) * | 2017-04-14 | 2017-08-15 | 珠海格力电器科技有限公司 | Intelligent heating, ventilating and air conditioning system of transformer substation and control method thereof |
| CN107120795B (en) * | 2017-05-16 | 2019-05-24 | 珠海格力电器股份有限公司 | air conditioner control method, system and device |
| CN108050659A (en) * | 2018-01-16 | 2018-05-18 | 北京齐家怡居科技有限责任公司 | A kind of control switching device for fresh air system |
| CN110238006B (en) * | 2019-06-29 | 2023-05-26 | 广东达诚技术有限公司 | Manual and automatic temperature control system of sheet coating dryer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290852Y (en) * | 1996-03-14 | 1998-09-09 | 佳木斯第二发电厂 | High sensitive hydrogen leakage detector |
| CN201281424Y (en) * | 2008-09-24 | 2009-07-29 | 上海南区节电科技开发有限公司 | Air conditioner ventilation automatic control system for multi-brand air conditioner of transformer substation |
| CN201289966Y (en) * | 2008-11-14 | 2009-08-12 | 宁夏电力公司吴忠供电局 | Synthesis monitoring terminal of maintenance facility for transforming plant |
| CN101581933A (en) * | 2009-05-12 | 2009-11-18 | 深圳市中兴新地通信器材有限公司 | Multi-heat dissipation device intelligent linkage machine room energy-saving control system |
| CN201556976U (en) * | 2009-09-10 | 2010-08-18 | 浙江天工自信科技工程有限公司 | Remote monitoring embedded control system of transformer substation |
| CN201937331U (en) * | 2010-11-24 | 2011-08-17 | 海盐县供电局 | Environment monitoring-controlling device for transformer substation |
| CN202383493U (en) * | 2011-12-14 | 2012-08-15 | 河南省电力勘测设计院 | Automatic control device for heating and ventilation of transformer substation |
-
2011
- 2011-12-14 CN CN201110416049.1A patent/CN103163846B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290852Y (en) * | 1996-03-14 | 1998-09-09 | 佳木斯第二发电厂 | High sensitive hydrogen leakage detector |
| CN201281424Y (en) * | 2008-09-24 | 2009-07-29 | 上海南区节电科技开发有限公司 | Air conditioner ventilation automatic control system for multi-brand air conditioner of transformer substation |
| CN201289966Y (en) * | 2008-11-14 | 2009-08-12 | 宁夏电力公司吴忠供电局 | Synthesis monitoring terminal of maintenance facility for transforming plant |
| CN101581933A (en) * | 2009-05-12 | 2009-11-18 | 深圳市中兴新地通信器材有限公司 | Multi-heat dissipation device intelligent linkage machine room energy-saving control system |
| CN201556976U (en) * | 2009-09-10 | 2010-08-18 | 浙江天工自信科技工程有限公司 | Remote monitoring embedded control system of transformer substation |
| CN201937331U (en) * | 2010-11-24 | 2011-08-17 | 海盐县供电局 | Environment monitoring-controlling device for transformer substation |
| CN202383493U (en) * | 2011-12-14 | 2012-08-15 | 河南省电力勘测设计院 | Automatic control device for heating and ventilation of transformer substation |
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Address after: 450007 Zhengzhou Zhongyuan Road, Henan, No. 212 Patentee after: China Electric Power Construction Group Henan electric survey and Design Institute Co., Ltd. Address before: 450007 Zhengzhou Zhongyuan Road, Henan, No. 212 Patentee before: Hennan Electric Power Survey & Design Institute |
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