CN106602706B - Generator switching and oiling control system and control method - Google Patents
Generator switching and oiling control system and control method Download PDFInfo
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- CN106602706B CN106602706B CN201611257227.XA CN201611257227A CN106602706B CN 106602706 B CN106602706 B CN 106602706B CN 201611257227 A CN201611257227 A CN 201611257227A CN 106602706 B CN106602706 B CN 106602706B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 101800000246 Allatostatin-1 Proteins 0.000 claims abstract description 60
- 102100036608 Aspartate aminotransferase, cytoplasmic Human genes 0.000 claims abstract description 60
- 101500011070 Diploptera punctata Allatostatin-2 Proteins 0.000 claims abstract description 57
- 239000000446 fuel Substances 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- 238000010248 power generation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/08—Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention provides a generator switching and oiling control system and a control method, wherein, mains supply is connected to a first contact of a main switch of a first switching switch AST1 through a transformer T, a second contact connected with the main switch and a standby switch of AST1 is used as an output end of a power supply system to be connected to a power supply bus, and the first contact of the standby switch of AST1 is connected to a second contact connected with the main switch and the standby switch of a second switching switch AST 2; the first contact of the main switch of AST2 is connected to one end of an AST2 of a first standby generator G1, the first contact of the standby switch of the AST2 is connected to one end of a second standby generator G2, the other ends of G1 and G2 are connected to a first end of an oil pump P, and a second end of the oil pump P is connected to a standby oil tank; the oil supply paths of G1 and G2 are also provided with electromagnetic valves. The invention has the advantages that: the power supply requirement can be met no matter the power is cut off in a short time after the mains supply is powered on or the power cut off time is longer.
Description
Technical Field
The present invention relates to power control, and more particularly, to a power control system and method for a generator.
Background
At present, a standby power supply mode is generally used as an emergency power supply, and when the main power supply loses power, a standby generator is used for supplying power, and the switching control is mainly to control the generator to start to supply power through a double power supply or manually control the generator to generate power. The oil quantity of the oil tank of the existing generator is limited, the oil tank can automatically flameout due to oil shortage after the power generation is started for a plurality of hours, and if the power is cut off again in a short time after the mains supply is started or the power cut time is longer, the requirement of long-term power supply cannot be met because the oil quantity of the standby generator is limited, so that a lot of inconvenience is caused to production and life.
Disclosure of Invention
The invention aims to solve the technical problem of providing a generator switching and oiling control system capable of meeting the requirement of long-term power supply.
The invention solves the technical problems through the following technical scheme: the generator switching and oiling control system comprises a transformer T, a backup oil tank, a transformer T, a first switch AST1, a second switch AST2, a first backup generator G1, a second backup generator G2, a first backup generator oil circuit electromagnetic valve M1, a second backup generator oil circuit electromagnetic valve M2, an oil delivery pump P and an oil level monitor L, wherein the first switch AST1 and the second switch AST2 comprise a main switch and a backup switch, the second contacts of the main switch and the backup switch are connected, and the first contacts are separated;
the mains supply is connected to a first contact of the main switch of the first switch AST1 through said transformer T, a connected second contact of the main switch and the standby switch of the first switch AST1 is connected as an output of the power supply system to a power supply bus for supplying power to the device, and a first contact of the standby switch of the first switch AST1 is connected to a connected second contact of the main switch and the standby switch of the second switch AST 2;
the first contact of the main switch of the second change-over switch AST2 is connected to one end of the first standby generator G1, the other end of the first standby generator G1 is connected to the first end of the oil transfer pump P, the first contact of the standby switch of the second change-over switch AST2 is connected to one end of the second standby generator G2, the other end of the second standby generator G2 is connected to the first end of the oil transfer pump P, and the second end of the oil transfer pump P is connected to the standby oil tank;
the oil supply path of the first standby generator G1 is provided with a first standby generator oil path electromagnetic valve M1, the oil supply path of the second standby generator G2 is provided with a second standby generator oil path electromagnetic valve M2, and the standby oil tank is provided with an oil level monitor L.
As an optimized technical scheme, switch state sensors are installed in the first switch AST1 and the second switch AST2, signals of the sensors are transmitted to a PLC, and the PLC is connected to an upper computer.
As a further optimized technical scheme, the transformer T, the first standby generator G1 and the second standby generator G2 are internally provided with multifunctional power supply sensors, and signals of the sensors are transmitted to the PLC.
As a further optimized technical scheme, signals of the first standby generator oil circuit electromagnetic valve M1, the second standby generator oil circuit electromagnetic valve M2 and the oil level monitor L are transmitted to the PLC.
The process of using the generator full-automatic switching and automatic oiling control system to automatically control is as follows:
(1) When the normal mains supply is supplied, the main switch of the first switch AST1 is in a closing state, the other switches are all in a switching-off state, namely the standby switch of the first switch AST1 is in a switching-off state, the second switch AST2 is in a double switching-off state, the mains supply is supplied through the transformer T, and a power supply channel is mains supply- & gt the main switch of the first switch AST 1- & gt a power supply bus;
(2) After the mains supply is lost, the system starts the first standby generator G1 according to the detection result of the mains supply, when the first standby generator G1 is started, whether the power quality of the first standby generator G1 meets the requirement is further monitored, after the power quality of the first standby generator G1 meets the requirement, the main switch of the second switch AST2 is controlled to be switched on, after the main switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the first standby generator G1 supplies power to equipment is achieved, and a power supply channel is as follows: the first standby generator G1- & gt the main switch of the second change-over switch AST 2- & gt the standby switch of the first change-over switch AST 1- & gt the power supply bus;
when the power failure time of the mains supply is short, the fuel consumption of the first standby generator G1 does not reach a value set by the system, the mains supply is powered on, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the first standby generator G1 to stop working, and according to the system setting, after the first standby generator G1 is cooled, the fuel transfer pump P is controlled to be turned on by the PLC, and the fuel is replenished to the first standby generator G1 by a standby fuel tank;
(3) When the mains supply is in power failure again, the system controls the second standby generator G2 to start, when the second standby generator G2 is started, whether the power quality of the second standby generator G2 meets the requirements or not is further monitored, when the power quality of the second standby generator G2 meets the requirements, the standby switch of the second switch AST2 is controlled to be switched on, after the standby switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the second standby generator G2 supplies power to equipment is achieved, and a power supply channel is: the second standby generator G2, the standby switch of the second change-over switch AST2, the standby switch of the first change-over switch AST1 and the power supply bus;
when the power outage time of the mains supply is still short again, the mains supply is powered on when the oil consumption of the second standby generator G2 does not reach a value set by the system, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the second standby generator G2 to stop working, and according to the system setting, after the second standby generator G2 is cooled, the oil transfer pump P is controlled to be turned on by the PLC, and the standby oil tank supplements oil for the second standby generator G2;
that is, the system controls the power supply of the first standby generator G1 and the second standby generator G2 to be started in a rotating way after each power failure.
As an optimized technical scheme, the process of using the generator full-automatic switching and automatic oiling control system to automatically control further comprises the following steps:
(4) When the commercial power has too long power failure time and the oil consumption of one standby generator cannot meet the continuous power supply requirement, the system starts the other generator to switch the power supply according to the setting, namely, controls the main switch and the standby switch of the second switch AST2 to be alternately opened and closed, then stops the former generator, and controls the standby oil tank to refuel the former generator after the former generator is cooled, so that the switching is repeated, and the uninterrupted power supply is ensured.
The invention also provides a method for controlling by adopting the generator switching and oiling control system, which comprises the following steps:
(1) When the normal mains supply is supplied, the main switch of the first switch AST1 is in a closing state, the other switches are all in a switching-off state, namely the standby switch of the first switch AST1 is in a switching-off state, the second switch AST2 is in a double switching-off state, the mains supply is supplied through the transformer T, and a power supply channel is mains supply- & gt the main switch of the first switch AST 1- & gt a power supply bus;
(2) After the mains supply is lost, the system starts the first standby generator G1 according to the detection result of the mains supply, when the first standby generator G1 is started, whether the power quality of the first standby generator G1 meets the requirement is further monitored, after the power quality of the first standby generator G1 meets the requirement, the main switch of the second switch AST2 is controlled to be switched on, after the main switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the first standby generator G1 supplies power to equipment is achieved, and a power supply channel is as follows: the first standby generator G1- & gt the main switch of the second change-over switch AST 2- & gt the standby switch of the first change-over switch AST 1- & gt the power supply bus;
when the power failure time of the mains supply is short, the fuel consumption of the first standby generator G1 does not reach a value set by the system, the mains supply is powered on, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the first standby generator G1 to stop working, and according to the system setting, after the first standby generator G1 is cooled, the fuel transfer pump P is controlled to be turned on by the PLC, and the fuel is replenished to the first standby generator G1 by a standby fuel tank;
(3) When the mains supply is in power failure again, the system controls the second standby generator G2 to start, when the second standby generator G2 is started, whether the power quality of the second standby generator G2 meets the requirements or not is further monitored, when the power quality of the second standby generator G2 meets the requirements, the standby switch of the second switch AST2 is controlled to be switched on, after the standby switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the second standby generator G2 supplies power to equipment is achieved, and a power supply channel is: the second standby generator G2, the standby switch of the second change-over switch AST2, the standby switch of the first change-over switch AST1 and the power supply bus;
when the power outage time of the mains supply is still short again, the mains supply is powered on when the oil consumption of the second standby generator G2 does not reach a value set by the system, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the second standby generator G2 to stop working, and according to the system setting, after the second standby generator G2 is cooled, the oil transfer pump P is controlled to be turned on by the PLC, and the standby oil tank supplements oil for the second standby generator G2;
that is, the system controls the power supply of the first standby generator G1 and the second standby generator G2 to be started in a rotating way after each power failure.
As a further optimized technical scheme, the method for controlling the generator switching and oiling control system further comprises the following steps:
(4) When the commercial power has too long power failure time and the oil consumption of one standby generator cannot meet the continuous power supply requirement, the system starts the other generator to switch the power supply according to the setting, namely, controls the main switch and the standby switch of the second switch AST2 to be alternately opened and closed, then stops the former generator, and controls the standby oil tank to refuel the former generator after the former generator is cooled, so that the switching is repeated, and the uninterrupted power supply is ensured.
Compared with the prior art, the invention has the following advantages: the control system and the control method adopted by the invention can control the automatic switching of 2 generators through a program, namely, the power generation time of the generators is set according to the oil quantity of the oil tank, the other generator is started when the oil of the generators is about to be exhausted, and the previous generator is stopped after the detection power supply is qualified after the starting is finished. The power supply of the generator is switched by adopting double power supply control. And after the generator 1 is stopped, the program controls the main oil tank to automatically refuel the generator 1, and the refuel system is automatically closed after the generator 1 is fully filled. The 2# generator is controlled in a circulating way, the oil quantity of the oil tank and the parameters of the engine can be automatically detected through a program and sent to a mobile phone of a central control and operating personnel through a wireless technology, and the power supply requirement can be met no matter whether the power supply is powered off in a short time after being powered on by mains supply or the power off time is long.
Drawings
FIG. 1 is a schematic block diagram of a generator switching and fueling control system in accordance with an embodiment of the present invention;
fig. 2 is a schematic diagram of a control manner according to an embodiment of the present invention.
Detailed Description
The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.
Referring to fig. 1 and 2, a generator switching and fueling control system according to an embodiment of the present invention includes a transformer T, a first switch AST1 (Automatic transfer switching), a second switch AST2, a first backup generator G1, a second backup generator G2, a first backup generator oil circuit solenoid valve M1, a second backup generator oil circuit solenoid valve M2, an oil transfer pump P, an oil level monitor L, and a backup oil tank.
The first switch AST1 and the second switch AST2 each comprise a main switch and a standby switch, the second contacts of the main switch and the standby switch are connected, and the first contacts are separated.
The mains supply is connected via said transformer T to a first contact of the main switch of the first switching switch AST1, and a connected second contact of the main switch and the standby switch of the first switching switch AST1 is connected as an output of the power supply system to the power supply bus for supplying the device. The first contact of the standby switch of the first changeover switch AST1 is connected to the connected second contact of the main switch and the standby switch of the second changeover switch AST 2.
The first contact of the main switch of the second switch AST2 is connected to one end of the first standby generator G1, the other end of the first standby generator G1 is connected to the first end of the oil transfer pump P, the first contact of the standby switch of the second switch AST2 is connected to one end of the second standby generator G2, the other end of the second standby generator G2 is connected to the first end of the oil transfer pump P, and the second end of the oil transfer pump P is connected to the backup oil tank.
The oil supply path of the first standby generator G1 is provided with a first standby generator oil path electromagnetic valve M1, the oil supply path of the second standby generator G2 is provided with a second standby generator oil path electromagnetic valve M2, and the standby oil tank is provided with an oil level monitor L. The transformer T, the first standby generator G1 and the second standby generator G2 are internally provided with multifunctional power supply sensors, the first switch AST1 and the second switch AST2 are internally provided with switch state sensors, signals of the sensors are transmitted to a PLC (programmable logic controller) together with signals of the first standby generator oil circuit electromagnetic valve M1, the second standby generator oil circuit electromagnetic valve M2 and the oil level monitor L, and the PLC comprehensively monitors the transformer T, the first standby generator G1, the second standby generator G2, the first switch AST1, the second switch AST2 and the oil supply loop. The use conditions of the transformer T, the first standby generator G1 and the second standby generator G2 are monitored, the oil levels of the first standby generator G1, the second standby generator G2 and the standby oil tank are monitored, and the switch states of the first switch AST1 and the second switch AST2 are monitored.
The PLC is connected to an upper computer of the control center. The upper computer can also play a role in reminding or alarming through the mobile equipment such as a mobile phone of a wireless connection operator, and can also be connected with an alarm device.
The process of using the generator switching and fueling control system for automatic control is as follows:
1. when the normal mains supply is supplied, the main switch of the first switch AST1 is in a closing state, the other switches are in a switching-off state, namely the standby switch of the first switch AST1 is in a switching-off state, and the second switch AST2 is in a double switching-off state. The utility power is supplied through a transformer T, a power supply channel is the utility power, the main switch of a first switching switch AST1 and a power supply bus, and meanwhile, the PLC comprehensively monitors the utility power, a first standby generator G1, a second standby generator G2, the first switching switch AST1, the second switching switch AST2 and an oil supply loop;
2. when the mains supply is in power failure, the system starts the first standby generator G1 according to the detection result of the mains supply, when the first standby generator G1 is started, whether the power quality of the first standby generator G1 meets the requirement is further monitored, when the power quality of the first standby generator G1 meets the requirement, the main switch of the second switch AST2 is controlled to be switched on, after the main switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the first standby generator G1 supplies power to equipment is achieved, and a power supply channel is as follows: the first standby generator G1- & gt the main switch of the second change-over switch AST 2- & gt the standby switch of the first change-over switch AST 1- & gt the power supply bus;
when the power outage time of the mains supply is short, the fuel consumption of the first standby generator G1 does not reach a value set by the system, the mains supply is powered on, and when the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the first standby generator G1 to stop working, and according to the system setting, after the first standby generator G1 is cooled, the fuel transfer pump P is controlled to be turned on by the PLC, and the fuel is replenished to the first standby generator G1 by the standby fuel tank.
3. When the mains supply is in power failure again, the system can control the second standby generator G2 to start, when the second standby generator G2 is started, whether the power quality of the second standby generator G2 meets the requirements or not can be further monitored, when the power quality of the second standby generator G2 meets the requirements, the standby switch of the second switch AST2 is controlled to be switched on, after the standby switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the second standby generator G2 supplies power to equipment is achieved, and a power supply channel is: the second standby generator G2, the standby switch of the second change-over switch AST2, the standby switch of the first change-over switch AST1 and the power supply bus;
when the power outage time of the mains supply is still short again, the mains supply is powered on when the oil consumption of the second standby generator G2 does not reach a value set by the system, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the second standby generator G2 to stop working, and according to the system setting, after the second standby generator G2 is cooled, the oil transfer pump P is controlled to be turned on by the PLC, and the standby oil tank supplements oil for the second standby generator G2.
That is, the system will control the first backup generator G1 and the second backup generator G2 to be turned on after each power outage, if the first power outage is performed, the second power outage is performed by the second backup generator G2, the third power outage is performed by the first backup generator G1, the fourth power outage is performed by the second backup generator G2, and so on.
4. When the commercial power has too long power failure time and the oil consumption of one standby generator cannot meet the continuous power supply requirement, the system starts the other generator to switch the power supply according to the setting, namely, controls the main switch and the standby switch of the second switch AST2 to be turned on and off alternately, then stops the former generator, and controls the standby oil tank to refuel the former generator after the former generator is cooled, so that the switching is repeated, and the uninterrupted power supply is ensured.
In the embodiment, the adopted control system and control method can control the automatic switching of 2 generators through a program, namely, the power generation time of the generators is set according to the oil quantity of the oil tank, the other generator is started when the oil of the generators is about to be exhausted, and the former generator is stopped after the detection of the qualified power supply after the start is finished. The power supply of the generator is switched by adopting double power supply control. After the 1# generator stops, the program can control the main oil tank to automatically refuel the 1# generator, and the refueling system is automatically closed after the main oil tank is filled, so that the 2# generator is controlled in a circulating way, whether the commercial power is supplied and then is cut off in a short time, or the power cut time is longer, and the power supply requirement can be met.
In actual use, when the above various sensors and the electromagnetic valve are not used, the change-over switch cannot be realized, but according to the on-site indication, the change-over of the upper computer remote control switch can be realized, and when the remote control has a problem or the remote control is not installed under the condition, the change-over of the switches can be realized manually on site, so that the continuous power supply effect is also realized.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (2)
1. The generator switching and oiling control system comprises a first switch AST1, a second switch AST2, a first standby generator G1 and a second standby generator G2, wherein the first switch AST1 and the second switch AST2 comprise a main switch and a standby switch, second contacts of the main switch and the standby switch are connected, and the first contacts are separated; the first contact of the standby switch of the first switch AST1 is connected to the second contact of the main switch and the standby switch of the second switch AST2, the first contact of the main switch of the second switch AST2 is connected to one end of the first standby generator G1, and the first contact of the standby switch of the second switch AST2 is connected to one end of the second standby generator G2, and the oil level control device is characterized by further comprising a transformer T, a standby oil tank, a first standby generator oil circuit electromagnetic valve M1, a second standby generator oil circuit electromagnetic valve M2, an oil pump P and an oil level monitor L;
the mains supply is connected to a first contact of a main switch of the first switching switch AST1 through the transformer T, and a second contact connected with the main switch and a standby switch of the first switching switch AST1 is used as an output end of a power supply system to be connected to a power supply bus for supplying power to equipment;
the other end of the first standby generator G1 is connected to the first end of the oil transfer pump P, the other end of the second standby generator G2 is connected to the first end of the oil transfer pump P, and the second end of the oil transfer pump P is connected to the standby oil tank;
a first standby generator oil way electromagnetic valve M1 is arranged on the oil supply path of the first standby generator G1, a second standby generator oil way electromagnetic valve M2 is arranged on the oil supply path of the second standby generator G2, and an oil level monitor L is arranged on the standby oil tank;
switch state sensors are installed in the first switch AST1 and the second switch AST2, signals of the sensors are transmitted to a PLC, the PLC is connected to an upper computer, multifunctional power supply sensors are installed in the transformer T, the first standby generator G1 and the second standby generator G2, signals of the sensors are transmitted to the PLC, and signals of the first standby generator oil circuit electromagnetic valve M1, the second standby generator oil circuit electromagnetic valve M2 and the oil level monitor L are transmitted to the PLC;
the process of using the generator full-automatic switching and automatic oiling control system to automatically control is as follows:
(1) When the normal mains supply is supplied, the main switch of the first switch AST1 is in a closing state, the other switches are all in a switching-off state, namely the standby switch of the first switch AST1 is in a switching-off state, the second switch AST2 is in a double switching-off state, the mains supply is supplied through the transformer T, and a power supply channel is mains supply- & gt the main switch of the first switch AST 1- & gt a power supply bus;
(2) After the mains supply is lost, the system starts the first standby generator G1 according to the detection result of the mains supply, when the first standby generator G1 is started, whether the power quality of the first standby generator G1 meets the requirement is further monitored, after the power quality of the first standby generator G1 meets the requirement, the main switch of the second switch AST2 is controlled to be switched on, after the main switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the first standby generator G1 supplies power to equipment is achieved, and a power supply channel is as follows: the first standby generator G1- & gt the main switch of the second change-over switch AST 2- & gt the standby switch of the first change-over switch AST 1- & gt the power supply bus;
when the power failure time of the mains supply is short, the fuel consumption of the first standby generator G1 does not reach a value set by the system, the mains supply is powered on, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the first standby generator G1 to stop working, and according to the system setting, after the first standby generator G1 is cooled, the fuel transfer pump P is controlled to be turned on by the PLC, and the fuel is replenished to the first standby generator G1 by a standby fuel tank;
(3) When the mains supply is in power failure again, the system controls the second standby generator G2 to start, when the second standby generator G2 is started, whether the power quality of the second standby generator G2 meets the requirements or not is further monitored, when the power quality of the second standby generator G2 meets the requirements, the standby switch of the second switch AST2 is controlled to be switched on, after the standby switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the second standby generator G2 supplies power to equipment is achieved, and a power supply channel is: the second standby generator G2, the standby switch of the second change-over switch AST2, the standby switch of the first change-over switch AST1 and the power supply bus;
when the power outage time of the mains supply is still short again, the mains supply is powered on when the oil consumption of the second standby generator G2 does not reach a value set by the system, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the second standby generator G2 to stop working, and according to the system setting, after the second standby generator G2 is cooled, the oil transfer pump P is controlled to be turned on by the PLC, and the standby oil tank supplements oil for the second standby generator G2;
the system is controlled to start the first standby generator G1 and the second standby generator G2 to supply power after power failure each time;
(4) When the commercial power has too long power failure time and the oil consumption of one standby generator cannot meet the continuous power supply requirement, the system starts the other generator to switch the power supply according to the setting, namely, controls the main switch and the standby switch of the second switch AST2 to be alternately opened and closed, then stops the former generator, and controls the standby oil tank to refuel the former generator after the former generator is cooled, so that the switching is repeated, and the uninterrupted power supply is ensured.
2. A method of controlling using the generator switching and fueling control system of claim 1 comprising the steps of:
(1) When the normal mains supply is supplied, the main switch of the first switch AST1 is in a closing state, the other switches are all in a switching-off state, namely the standby switch of the first switch AST1 is in a switching-off state, the second switch AST2 is in a double switching-off state, the mains supply is supplied through the transformer T, and a power supply channel is mains supply- & gt the main switch of the first switch AST 1- & gt a power supply bus;
(2) After the mains supply is lost, the system starts the first standby generator G1 according to the detection result of the mains supply, when the first standby generator G1 is started, whether the power quality of the first standby generator G1 meets the requirement is further monitored, after the power quality of the first standby generator G1 meets the requirement, the main switch of the second switch AST2 is controlled to be switched on, after the main switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the first standby generator G1 supplies power to equipment is achieved, and a power supply channel is as follows: the first standby generator G1- & gt the main switch of the second change-over switch AST 2- & gt the standby switch of the first change-over switch AST 1- & gt the power supply bus;
when the power failure time of the mains supply is short, the fuel consumption of the first standby generator G1 does not reach a value set by the system, the mains supply is powered on, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the first standby generator G1 to stop working, and according to the system setting, after the first standby generator G1 is cooled, the fuel transfer pump P is controlled to be turned on by the PLC, and the fuel is replenished to the first standby generator G1 by a standby fuel tank;
(3) When the mains supply is in power failure again, the system controls the second standby generator G2 to start, when the second standby generator G2 is started, whether the power quality of the second standby generator G2 meets the requirements or not is further monitored, when the power quality of the second standby generator G2 meets the requirements, the standby switch of the second switch AST2 is controlled to be switched on, after the standby switch of the second switch AST2 is confirmed to be switched on, the standby switch of the first switch AST1 is controlled to be switched on, so that the purpose that the second standby generator G2 supplies power to equipment is achieved, and a power supply channel is: the second standby generator G2, the standby switch of the second change-over switch AST2, the standby switch of the first change-over switch AST1 and the power supply bus;
when the power outage time of the mains supply is still short again, the mains supply is powered on when the oil consumption of the second standby generator G2 does not reach a value set by the system, and the power quality of the mains supply meets the requirement set by the system, the system can automatically control the standby switch of the first switch AST1 to be switched off, the main switch is switched on, so that the mains supply is switched on, the system further controls the second standby generator G2 to stop working, and according to the system setting, after the second standby generator G2 is cooled, the oil transfer pump P is controlled to be turned on by the PLC, and the standby oil tank supplements oil for the second standby generator G2;
the system is controlled to start the first standby generator G1 and the second standby generator G2 to supply power after power failure each time;
(4) When the commercial power has too long power failure time and the oil consumption of one standby generator cannot meet the continuous power supply requirement, the system starts the other generator to switch the power supply according to the setting, namely, controls the main switch and the standby switch of the second switch AST2 to be alternately opened and closed, then stops the former generator, and controls the standby oil tank to refuel the former generator after the former generator is cooled, so that the switching is repeated, and the uninterrupted power supply is ensured.
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| CN201611257227.XA CN106602706B (en) | 2016-12-30 | 2016-12-30 | Generator switching and oiling control system and control method |
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| CN107658963B (en) * | 2017-09-21 | 2024-06-07 | 嘉兴恒创电力设计研究院有限公司嘉善分公司 | Standby power supply control box for substation |
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