CN109739113B - Control system, method, storage medium, and processor - Google Patents
Control system, method, storage medium, and processor Download PDFInfo
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- CN109739113B CN109739113B CN201811645845.0A CN201811645845A CN109739113B CN 109739113 B CN109739113 B CN 109739113B CN 201811645845 A CN201811645845 A CN 201811645845A CN 109739113 B CN109739113 B CN 109739113B
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Abstract
The application discloses a control system, a control method, a storage medium and a processor. The system comprises: the protection module is used for collecting a first voltage on a first power supply, a second voltage on a second power supply, a third voltage on a first bus, a fourth voltage on a second bus, a first current between the first power supply and the first bus, a second current between the second power supply and the second bus and a third current between the first bus and the second bus; the protection module is also connected with the first circuit breaker, the second circuit breaker and the third circuit breaker respectively; and the control module is used for receiving the data acquired by the protection module and controlling the on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker based on the data acquired by the protection module. Through the method and the device, the problem that when a power supply or a bus of a cooling system of a transformer in the related art breaks down, the cooling system is easily caused to stop completely, and a power grid accident is caused is solved.
Description
Technical Field
The present application relates to the field of transformer cooling system control, and in particular, to a control system, a control method, a storage medium, and a processor.
Background
The power transformer is one of important equipment in the operation of a high-voltage power grid, the power transformer can generate heat in the operation process, most of the power transformer is cooled by adopting a forced oil circulation air cooling mode, and the reliable operation of a cooling system of the power transformer is directly related to the service life and the operation safety of the transformer. Under the condition that the load and the ambient temperature are not changed, once the cooler is completely stopped during the operation of the forced oil circulation air-cooled transformer, the oil temperature can rapidly rise, great threat can be caused to the insulating material in the transformer, insulation aging and breakdown can be caused, and the transformer can be damaged and burnt out and larger power grid accidents can be caused under the condition of untimely or improper treatment.
The traditional forced oil circulation air-cooled transformer cooling system mainly comprises a heat exchanger, an oil-submerged pump, a cooling fan, an oil flow relay, control equipment and the like. The cooler composed of the submersible pump and the cooling fan is connected to a bus of the cooling system, the two incoming line power supplies are selected by the switching device and supply power to the bus, so that the power supply reliability is improved, and the two incoming line power supplies are selected by the switching control device and are sucked by the contact relay corresponding to the two incoming line power supplies to serve as the power supply of each group of coolers. The traditional control equipment is built by various relays, transfer switches and other discrete devices, and has the problems of more mechanical contacts, complex circuit structure, unreliable operation, difficulty in maintenance, operation and the like. Furthermore, conventional cooling systems also present a serious risk factor that leads to "chiller outages": specifically, when a bus short-circuit fault occurs in the cooling system, two incoming line power supplies are tripped, so that the bus is powered off, and the cooler is completely stopped; when the cooler branch circuit is in fault, the branch circuit breaker refuses to move due to the reasons of failure or mechanical fault and the like, and the two incoming line power supply circuit breakers perform override action to cause the loss of electricity of the bus, thereby causing the full stop of the cooler.
Aiming at the problem that the power supply or the bus of the cooling system of the transformer in the related technology is easy to cause the complete stop of the cooling system to cause the power grid accident, an effective solution is not provided at present.
Disclosure of Invention
The application provides a control system, a control method, a storage medium and a processor, which are used for solving the problem that when a power supply or a bus of a cooling system of a transformer in the related art breaks down, the cooling system is easily stopped completely, so that a power grid accident is caused.
According to one aspect of the present application, a control system is provided. The system comprises: the protection module is used for collecting a first voltage on a first power supply, a second voltage on a second power supply, a third voltage on a first bus, a fourth voltage on a second bus, a first current between the first power supply and the first bus, a second current between the second power supply and the second bus, and a third current between the first bus and the second bus, wherein the first power supply supplies power to the first bus, the second power supply supplies power to the second bus, the first bus is used for driving a first preset number of groups of coolers to work, and the second bus is used for driving a second preset number of groups of coolers to work; the protection module is also respectively connected with a first circuit breaker, a second circuit breaker and a third circuit breaker, wherein the first circuit breaker is arranged between a first power supply and a first bus, the second circuit breaker is arranged between a second power supply and a second bus, and the third circuit breaker is arranged between the first bus and the second bus; and the control module is used for receiving the data acquired by the protection module and controlling the on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker based on the data acquired by the protection module.
Further, the protection module comprises a first voltage transformer, a second voltage transformer, a third voltage transformer and a fourth voltage transformer, wherein the first voltage transformer is used for collecting first voltage, the second voltage transformer is used for collecting second voltage, the third voltage transformer is used for collecting third voltage, and the fourth voltage transformer is used for collecting fourth voltage.
Furthermore, a first current transformer is arranged between the first power supply and the first bus, a second current transformer is arranged between the second power supply and the second bus, and a third current transformer is arranged between the first bus and the second bus, so that the first current is collected through the first current transformer, the second current is collected through the second current transformer, and the third current is collected through the third current transformer.
Further, the system further comprises: and the touch display screen is used for displaying the data acquired by the protection module and triggering an instruction for controlling the on-off of the first circuit breaker, an instruction for controlling the on-off of the first circuit breaker and an instruction for controlling the on-off of the first circuit breaker.
According to one aspect of the present application, a control method is provided. The method is applied to the control system of any one of the above items, and comprises the following steps: detecting a first voltage, a second voltage, a first current and a second current when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is open; under the condition that the first voltage is not detected and the first current is not detected, controlling the first circuit breaker to be opened and controlling the third circuit breaker to be closed; or under the conditions that the second voltage cannot be detected and the second current cannot be detected, the second circuit breaker is controlled to be opened, and the third circuit breaker is controlled to be closed; under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, controlling a first circuit breaker to be switched off; or under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, the second circuit breaker is controlled to be switched off.
Further, under the condition that the first voltage is detected and the first current is increased to a first preset current value within a preset time, after the first circuit breaker is controlled to be opened, the method further comprises the step of determining that the first bus has a fault; or after the second circuit breaker is controlled to be switched off under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, determining that the second bus has a fault; after determining that the first bus is faulty or determining that the second bus is faulty, generating a blocking signal for stopping generation of a target command for the controller to control closing of the first circuit breaker, the second circuit breaker, and the third circuit breaker.
Further, in the case that the first voltage is not detected and the first current is not detected, after controlling the first circuit breaker to open and controlling the third circuit breaker to close, the method further comprises: detecting whether the working performance of the first power supply meets a preset condition, and controlling the third circuit breaker to be switched off and the first circuit breaker to be switched on under the conditions that the working performance of the first power supply meets the preset condition and no locking signal exists; in the case that the second voltage is not detected and the second current is not detected, the method further comprises the following steps of controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed: and detecting whether the working performance of the second power supply meets a preset condition, controlling the third circuit breaker to be switched off and controlling the second circuit breaker to be switched on under the conditions that the working performance of the second power supply meets the preset condition and no locking signal exists.
Further, in the case that the first voltage is not detected and the first current is not detected, after controlling the first circuit breaker to open and controlling the third circuit breaker to close, the method further comprises: under the condition that the third current is detected to be increased to a second preset current value within preset time, controlling a third circuit breaker to be switched off; in the case that the second voltage is not detected and the second current is not detected, the method further comprises the following steps of controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed: and under the condition that the third current is detected to be increased to a second preset current value within the preset time, controlling the third circuit breaker to be opened.
In order to achieve the above object, according to another aspect of the present application, there is provided a storage medium including a stored program, wherein the program executes any one of the above-described control methods.
In order to achieve the above object, according to another aspect of the present application, there is provided a processor for executing a program, wherein the program executes to perform any one of the above control methods.
By this application, the following are included: the protection module is used for collecting a first voltage on a first power supply, a second voltage on a second power supply, a third voltage on a first bus, a fourth voltage on a second bus, a first current between the first power supply and the first bus, a second current between the second power supply and the second bus, and a third current between the first bus and the second bus, wherein the first power supply supplies power to the first bus, the second power supply supplies power to the second bus, the first bus is used for driving a first preset number of groups of coolers to work, and the second bus is used for driving a second preset number of groups of coolers to work; the protection module is also respectively connected with a first circuit breaker, a second circuit breaker and a third circuit breaker, wherein the first circuit breaker is arranged between a first power supply and a first bus, the second circuit breaker is arranged between a second power supply and a second bus, and the third circuit breaker is arranged between the first bus and the second bus; and the control module is used for receiving the data acquired by the protection module and controlling the on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker based on the data acquired by the protection module, so that the problem that the cooling system is easily stopped completely to cause a power grid accident when a power supply or a bus of the cooling system of the transformer in the related technology breaks down is solved. The on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker are controlled by the control module based on the data collected by the protection module, so that the effect that the cooling system can not be completely stopped when a power supply or a bus of the cooling system of the transformer breaks down is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a control system provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a control system provided according to an embodiment of the present application;
FIG. 3 is a flow chart of a control method provided according to an embodiment of the present application; and
fig. 4 is a schematic diagram of a control device provided according to an embodiment of the present application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an embodiment of the present application, a control system is provided.
FIG. 1 is a schematic diagram of a control system according to an embodiment of the present application. As shown in fig. 1, the system includes: a protection module 10 and a control module 20.
Specifically, the protection module 10 is configured to collect a first voltage on a first power supply, a second voltage on a second power supply, a third voltage on a first bus, a fourth voltage on a second bus, a first current between the first power supply and the first bus, a second current between the second power supply and the second bus, and a third current between the first bus and the second bus, where the first power supply supplies power to the first bus, the second power supply supplies power to the second bus, the first bus is configured to drive a first preset number of groups of coolers to operate, and the second bus is configured to drive a second preset number of groups of coolers to operate; the protection module 10 is further connected to a first circuit breaker, a second circuit breaker and a third circuit breaker, wherein the first circuit breaker is disposed between the first power source and the first bus, the second circuit breaker is disposed between the second power source and the second bus, and the third circuit breaker is disposed between the first bus and the second bus.
And the control module 20 is configured to receive the data acquired by the protection module 10, and control the on/off of the first circuit breaker, the on/off of the second circuit breaker, and the on/off of the third circuit breaker based on the data acquired by the protection module 10.
It should be noted that the protection module 10 integrates a bus protection board, adopts a 32-bit high-performance ARM processor, has multiple AD and GPIO channels, and integrates a perfect bus fault protection algorithm. The serial bus is connected with the control module 20, and can receive commands issued by the control module 20 and upload sampling data, action events and the like. The control module 20 integrates a main control unit board card, communicates with the protection module 10 internally, issues commands, receives data and the like, and communicates with remote scheduling externally through a network port/serial port, so that the functions of remote control, remote measurement and remote signaling of the cooling system can be realized. The protection module 10 and the control module 20 together with the first power supply, the second power supply, the first bus, the second bus, the first circuit breaker, the second circuit breaker, the third circuit breaker, the first preset number of group coolers, the second preset number of group coolers and the like form a cooling system.
As shown in fig. 2, during operation, the first bus drives the first cooler and the second cooler to operate, the second bus drives the third cooler and the fourth cooler to operate, the CB1 is a first circuit breaker for switching on and off the power supply of the first bus by the first power supply, the CB2 is a second circuit breaker for switching on and off the power supply of the second bus by the second power supply, and the CB3 is a third circuit breaker for switching on and off the first bus and the second bus. The bus of the cooling system is divided into two sections, namely a first bus and a second bus, by using a circuit breaker with an electric operating mechanism, the operation conditions of the two sections of buses and two paths of incoming line power supplies are comprehensively monitored, when the incoming line power supplies break down, the failed power supplies can be automatically cut off and switched to the other path of power supplies to continue supplying power, when one section of bus breaks down, the device cuts the failed bus out of the system, so that the other section of normal bus continues to operate, and therefore the serious accident that the cooler is completely stopped under the condition of bus failure is guaranteed. It should be noted that, the first circuit breaker, the second circuit breaker and the third circuit breaker adopt the circuit breakers with the electric operating mechanism, and replace the traditional 'circuit breaker + contactor' operation mode, the electric operating mechanism can adopt two 220V direct current pulse signals as the operation instructions of opening and closing of each circuit breaker, each circuit breaker also has the basic protection functions of short circuit tripping and thermal overload tripping, and the like, and the cooling system can be automatically tripped and protected according to the preset fault current value, thereby greatly increasing the reliability of the cooling system.
In the control device provided by the embodiment of the application, through the protection module 10, the protection module 10 is configured to collect a first voltage on a first power supply, a second voltage on a second power supply, a third voltage on a first bus, a fourth voltage on a second bus, a first current between the first power supply and the first bus, a second current between the second power supply and the second bus, and a third current between the first bus and the second bus, where the first power supply supplies power to the first bus, the second power supply supplies power to the second bus, the first bus is configured to drive a first preset number of groups of coolers to work, and the second bus is configured to drive a second preset number of groups of coolers to work; the protection module 10 is further connected to a first circuit breaker, a second circuit breaker and a third circuit breaker, wherein the first circuit breaker is disposed between the first power source and the first bus, the second circuit breaker is disposed between the second power source and the second bus, and the third circuit breaker is disposed between the first bus and the second bus. The control module 20 is used for receiving data collected by the protection module 10, controlling the on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker based on the data collected by the protection module 10, solving the problem that the power supply or the bus of the cooling system of the transformer in the related technology is easy to cause the full stop of the cooling system and the power grid accident is caused, controlling the on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker based on the data collected by the protection module 10 through the control module 20, and further achieving the effect that the cooling system cannot be caused to be fully stopped when the power supply or the bus of the cooling system of the transformer is in.
Optionally, in the control system provided in the embodiment of the present application, the protection module 10 includes a first voltage transformer, a second voltage transformer, a third voltage transformer, and a fourth voltage transformer, where the first voltage transformer is configured to collect a first voltage, the second voltage transformer is configured to collect a second voltage, the third voltage transformer is configured to collect a third voltage, and the fourth voltage transformer is configured to collect a fourth voltage.
As shown in fig. 2, PT1 is a first voltage transformer of a first power supply, PT2 is a second voltage transformer of a second power supply, PT3 is a third voltage transformer of a first bus, and PT4 is a fourth voltage transformer of a second bus, and the voltage transformers built in the protection module 10 can be directly connected to a strong voltage signal on a loop. The protection module 10 can sample at least 63 paths of alternating current signals, and the sampling frequency reaches 600 Hz/s.
Optionally, in the control system provided in this embodiment of the application, a first current transformer is disposed between the first power supply and the first bus, a second current transformer is disposed between the second power supply and the second bus, and a third current transformer is disposed between the first bus and the second bus, and the first current is collected by the first current transformer, the second current is collected by the second current transformer, and the third current is collected by the third current transformer.
As shown in fig. 2, CT1 is a first current transformer of the first power supply, CT2 is a second current transformer of the second power supply, and CT3 is a third current transformer between the first bus and the second bus, and the current transformers convert the strong current signals into the weak current signals, thereby facilitating the collection and monitoring of the current by the protection device.
In addition, the protection module 10 also samples the on-off signals of the first circuit breaker, the second circuit breaker and the third circuit breaker, and the device accurately judges the fault occurrence point through the analog quantity, the switching value and the direction characteristic value, and automatically records the fault process when the fault occurs to form a COMTRADE waveform file, so that a reliable basis is provided for timely judging and positioning the fault and quickly recovering power supply.
Optionally, in the control system provided in the embodiment of the present application, the system further includes: and the touch display screen is used for displaying the data acquired by the protection module 10, and triggering an instruction for controlling the on-off of the first circuit breaker, an instruction for controlling the on-off of the first circuit breaker and an instruction for controlling the on-off of the first circuit breaker.
Specifically, the touch display screen is a touchable industrial control liquid crystal display screen, has a friendly operable interface, and can realize system data viewing and operation on site.
According to an embodiment of the present application, a control method is provided.
Fig. 3 is a flowchart of a control method according to an embodiment of the present application. As shown in fig. 3, the method comprises the steps of:
step S301 detects a first voltage, a second voltage, a first current, and a second current when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is open.
Specifically, the initial states CB1 and CB2 are in the on-state position, the CB3 is in the off-state position, the first power supply operates with the first bus, the second power supply operates with the second bus, and at the moment, the two sections of buses respectively operate with a half cooling system.
Step S302, under the condition that the first voltage cannot be detected and the first current cannot be detected, controlling the first circuit breaker to be opened and controlling the third circuit breaker to be closed; or under the condition that the second voltage is not detected and the second current is not detected, the second circuit breaker is controlled to be opened, and the third circuit breaker is controlled to be closed.
Specifically, when the first power supply is detected to be out of voltage and the current of the CT1 becomes zero, the first power supply fails, the CB1 is controlled to be switched off, the first power supply is disconnected, then the CB3 is controlled to be switched on, the second power supply supplies power to the first bus and the second bus, and all coolers under the first bus and the second bus keep live operation. When the second power supply is detected to be in voltage loss and the current of the CT2 becomes zero, the second power supply fails, the CB2 is controlled to be switched off, the second power supply is disconnected, then the CB3 is controlled to be switched on, at the moment, the first power supply supplies power to the first bus and the second bus, and all coolers under the first bus and the second bus keep live operation.
Step S303, controlling the first breaker to be disconnected under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time; or under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, the second circuit breaker is controlled to be switched off.
Specifically, when the voltage of the first power supply is detected and the current of the CT1 is suddenly increased to a preset value, the first bus fails, the CB1 is controlled to rapidly open the brake, the first power supply is disconnected, meanwhile, a segmented spare power automatic switching locking signal is sent, at the moment, the first bus is in voltage loss, all coolers under the first bus stop supplying power, the second power supply and the second bus run normally, and all coolers under the second bus keep running in an electrified mode. When the second power supply is detected to have voltage and the current of the CT2 is suddenly increased to a preset value, the second bus fails, the CB2 is controlled to be rapidly switched off, the second power supply is disconnected, meanwhile, a segmented spare power automatic switching locking signal is sent, at the moment, the second bus is in voltage loss, all coolers under the second bus stop supplying power, the first power supply and the first bus normally operate, and all coolers under the first bus keep operating in an electrified mode.
Optionally, in the control method provided in the embodiment of the present application, after the first circuit breaker is controlled to open when the first voltage is detected and the first current is increased to the first preset current value within the preset time, the method further includes determining that the first bus has a fault; or after the second circuit breaker is controlled to be switched off under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, determining that the second bus has a fault; after determining that the first bus is faulty or determining that the second bus is faulty, generating a blocking signal for stopping generation of a target command for the controller to control closing of the first circuit breaker, the second circuit breaker, and the third circuit breaker.
Specifically, after a blocking signal of the sectional spare power automatic switching is sent, the sectional spare power automatic switching function is blocked, and a bus sectional breaker or an incoming line power supply breaker in a brake-separating state is not closed any more. And (4) until the fault is manually eliminated, the blocking signal of the sectional backup power automatic switching is released after the bus of the fault section is electrified and operated for a period of time, for example, 10 seconds.
Optionally, in the control method provided in this embodiment of the application, after the first circuit breaker is controlled to open and the third circuit breaker is controlled to close when the first voltage is not detected and the first current is not detected, the method further includes: detecting whether the working performance of the first power supply meets a preset condition, and controlling the third circuit breaker to be switched off and the first circuit breaker to be switched on under the conditions that the working performance of the first power supply meets the preset condition and no locking signal exists; in the case that the second voltage is not detected and the second current is not detected, the method further comprises the following steps of controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed: and detecting whether the working performance of the second power supply meets a preset condition, controlling the third circuit breaker to be switched off and controlling the second circuit breaker to be switched on under the conditions that the working performance of the second power supply meets the preset condition and no locking signal exists.
Specifically, when the second power supply simultaneously operates with two sections of buses, the CB1 is in a switching-off position, the CB2 is in a switching-on position, and the CB3 is in a switching-on position, if the voltage of the first power supply is detected to be recovered and a blocking signal of the sectional backup power automatic switch-on is not detected, the CB3 is controlled to be switched off, the two sections of buses are separated, then the CB1 is switched on, the first power supply is switched on, at the moment, the two power supplies are switched on, and the two sections of buses respectively operate with a half cooling system and recover to an initial state. If the second power supply voltage is detected to be recovered and a blocking signal of the sectional spare power automatic switching is not detected, the CB3 is controlled to be switched off to separate the two sections of buses, then the CB2 is controlled to be switched on to switch the second power supply into operation, at the moment, the two incoming line power supplies are switched into operation, and the two sections of buses are respectively provided with a half cooling system to operate and recover to the initial state.
Optionally, in the control method provided in this embodiment of the application, after the first circuit breaker is controlled to open and the third circuit breaker is controlled to close when the first voltage is not detected and the first current is not detected, the method further includes: under the condition that the third current is detected to be increased to a second preset current value within preset time, controlling a third circuit breaker to be switched off; in the case that the second voltage is not detected and the second current is not detected, the method further comprises the following steps of controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed: and under the condition that the third current is detected to be increased to a second preset current value within the preset time, controlling the third circuit breaker to be opened.
Specifically, when the second power supply simultaneously operates with two buses, the CB1 is in a switch-off position, the CB2 is in a switch-on position, and the CB3 is in a switch-on position, if the current flowing through the CT3 is suddenly increased to a preset value and the current direction flows from the second bus to the first bus, the first bus is in a fault, the CB3 is controlled to be rapidly switched off, the first fault bus is isolated, at the moment, the cooler under the first bus is in power-off operation, but the other half of the cooling system carried by the second bus keeps in live operation; and if the CT3 is detected to suddenly increase the current to a preset value and the current direction flows from the first bus to the second bus, the second bus fails, the CB3 is controlled to open the brake, the second bus is isolated, at the moment, the cooler under the second bus loses power and stops running, but the other half of the coolers carried by the first bus keep running in a charged mode.
The control method provided by the embodiment of the application is applied to any one of the control systems, and the first voltage, the second voltage, the first current and the second current are detected when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is opened; under the condition that the first voltage is not detected and the first current is not detected, controlling the first circuit breaker to be opened and controlling the third circuit breaker to be closed; or under the conditions that the second voltage cannot be detected and the second current cannot be detected, the second circuit breaker is controlled to be opened, and the third circuit breaker is controlled to be closed; under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, controlling a first circuit breaker to be switched off; or under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, the second circuit breaker is controlled to be switched off, so that the problem that the power supply or the bus of the cooling system of the transformer in the related art is easy to cause the full stop of the cooling system to cause a power grid accident when the power supply or the bus of the cooling system is in fault is solved. The on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker are controlled by detecting the first voltage, the second voltage, the first current and the second current, so that the effect that the cooling system cannot be completely stopped when a power supply or a bus of the cooling system of the transformer breaks down is achieved.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the present application further provides a control device, and it should be noted that the control device according to the embodiment of the present application may be used to execute the control method provided by the embodiment of the present application. The following describes a control device provided in an embodiment of the present application.
Fig. 4 is a schematic diagram of a control device according to an embodiment of the present application. As shown in fig. 4, the apparatus is applied to the control system of any one of the above, and includes: a detection unit 41, a first control unit 42 and a second control unit 43.
Specifically, the measuring unit 41 is configured to detect a first voltage, a second voltage, a first current, and a second current when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is opened;
a first control unit 42, configured to control the first circuit breaker to open and the third circuit breaker to close when the first voltage is not detected and the first current is not detected; or under the conditions that the second voltage cannot be detected and the second current cannot be detected, the second circuit breaker is controlled to be opened, and the third circuit breaker is controlled to be closed;
a second control unit 43, configured to control the first circuit breaker to open when the first voltage is detected and the first current increases to a first preset current value within a preset time; or under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, the second circuit breaker is controlled to be switched off.
Optionally, in the control device provided in the embodiment of the present application, the device further includes: the first determining unit is used for controlling the first breaker to be disconnected under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, and the device further comprises the step of determining that the first bus has a fault; the first determining unit is used for controlling the second circuit breaker to be disconnected after the second circuit breaker is controlled to be disconnected under the condition that the second voltage is detected and the second current is increased to a first preset current value within preset time, and the device further comprises the step of determining that the second bus has a fault; and the signal generating unit is used for generating a blocking signal after the first bus is determined to be in fault or the second bus is determined to be in fault, and the blocking signal is used for stopping generation of a target command, wherein the target command is used for controlling the first breaker, the second breaker and the third breaker to be closed by the controller.
Optionally, in the control device provided in the embodiment of the present application, the device further includes: the third control unit is used for controlling the first circuit breaker to be opened under the condition that the first voltage is not detected and the first current is not detected, detecting whether the working performance of the first power supply meets a preset condition or not after controlling the third circuit breaker to be closed, and controlling the third circuit breaker to be opened and controlling the first circuit breaker to be closed under the condition that the working performance of the first power supply meets the preset condition and no locking signal exists; the fourth control unit is used for controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed under the condition that the second voltage is not detected and the second current is not detected, and the device further comprises: and detecting whether the working performance of the second power supply meets a preset condition, controlling the third circuit breaker to be switched off and controlling the second circuit breaker to be switched on under the conditions that the working performance of the second power supply meets the preset condition and no locking signal exists.
Optionally, in the control device provided in the embodiment of the present application, the device further includes: the fifth control unit is used for controlling the first circuit breaker to be opened under the condition that the first voltage cannot be detected and the first current cannot be detected, and controlling the third circuit breaker to be opened under the condition that the third current is detected to be increased to a second preset current value within preset time after the third circuit breaker is controlled to be closed; and the sixth control unit is used for controlling the second circuit breaker to be opened under the condition that the second voltage cannot be detected and the second current cannot be detected, and controlling the third circuit breaker to be opened under the condition that the third current is detected to be increased to a second preset current value within the preset time after the third circuit breaker is controlled to be closed.
In the control device provided by the embodiment of the application, the first voltage, the second voltage, the first current and the second current are detected by the detection unit 41 when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is opened; the first control unit 42 controls the first circuit breaker to be opened and controls the third circuit breaker to be closed when the first voltage is not detected and the first current is not detected; or under the conditions that the second voltage cannot be detected and the second current cannot be detected, the second circuit breaker is controlled to be opened, and the third circuit breaker is controlled to be closed; the second control unit 43 controls the first circuit breaker to open when the first voltage is detected and the first current is increased to a first preset current value within a preset time; or when the second voltage is detected and the second current is increased to the first preset current value within the preset time, the second circuit breaker is controlled to be switched off, the problem that the cooling system is easily stopped completely to cause a power grid accident when a power supply or a bus of the cooling system of the transformer in the related technology breaks down is solved, the on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker are controlled by detecting the first voltage, the second voltage, the first current and the second current, and the effect that the cooling system is not stopped completely when the power supply or the bus of the cooling system of the transformer breaks down is achieved.
The control device comprises a processor and a memory, the measuring unit 41, the first control unit 42, the second control unit 43 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem that when a power supply or a bus of a cooling system of a transformer in the related technology breaks down, the cooling system is easily caused to stop completely, so that a power grid accident is caused is solved by adjusting kernel parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a storage medium having a program stored thereon, the program implementing the control method when executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the control method is executed when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps: detecting a first voltage, a second voltage, a first current and a second current when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is open; under the condition that the first voltage is not detected and the first current is not detected, controlling the first circuit breaker to be opened and controlling the third circuit breaker to be closed; or under the conditions that the second voltage cannot be detected and the second current cannot be detected, the second circuit breaker is controlled to be opened, and the third circuit breaker is controlled to be closed; under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, controlling a first circuit breaker to be switched off; or under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, the second circuit breaker is controlled to be switched off.
Under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, after the first circuit breaker is controlled to be switched off, determining that the first bus has a fault; or after the second circuit breaker is controlled to be switched off under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, determining that the second bus has a fault; after determining that the first bus is faulty or determining that the second bus is faulty, generating a blocking signal for stopping generation of a target command for the controller to control closing of the first circuit breaker, the second circuit breaker, and the third circuit breaker.
In the case that the first voltage is not detected and the first current is not detected, the method further comprises the following steps of controlling the first breaker to be opened and controlling the third breaker to be closed: detecting whether the working performance of the first power supply meets a preset condition, and controlling the third circuit breaker to be switched off and the first circuit breaker to be switched on under the conditions that the working performance of the first power supply meets the preset condition and no locking signal exists; in the case that the second voltage is not detected and the second current is not detected, the method further comprises the following steps of controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed: and detecting whether the working performance of the second power supply meets a preset condition, controlling the third circuit breaker to be switched off and controlling the second circuit breaker to be switched on under the conditions that the working performance of the second power supply meets the preset condition and no locking signal exists.
In the case that the first voltage is not detected and the first current is not detected, the method further comprises the following steps of controlling the first breaker to be opened and controlling the third breaker to be closed: under the condition that the third current is detected to be increased to a second preset current value within preset time, controlling a third circuit breaker to be switched off; in the case that the second voltage is not detected and the second current is not detected, the method further comprises the following steps of controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed: and under the condition that the third current is detected to be increased to a second preset current value within the preset time, controlling the third circuit breaker to be opened. The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: detecting a first voltage, a second voltage, a first current and a second current when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is open; under the condition that the first voltage is not detected and the first current is not detected, controlling the first circuit breaker to be opened and controlling the third circuit breaker to be closed; or under the conditions that the second voltage cannot be detected and the second current cannot be detected, the second circuit breaker is controlled to be opened, and the third circuit breaker is controlled to be closed; under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, controlling a first circuit breaker to be switched off; or under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, the second circuit breaker is controlled to be switched off.
Under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, after the first circuit breaker is controlled to be switched off, determining that the first bus has a fault; or after the second circuit breaker is controlled to be switched off under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, determining that the second bus has a fault; after determining that the first bus is faulty or determining that the second bus is faulty, generating a blocking signal for stopping generation of a target command for the controller to control closing of the first circuit breaker, the second circuit breaker, and the third circuit breaker.
In the case that the first voltage is not detected and the first current is not detected, the method further comprises the following steps of controlling the first breaker to be opened and controlling the third breaker to be closed: detecting whether the working performance of the first power supply meets a preset condition, and controlling the third circuit breaker to be switched off and the first circuit breaker to be switched on under the conditions that the working performance of the first power supply meets the preset condition and no locking signal exists; in the case that the second voltage is not detected and the second current is not detected, the method further comprises the following steps of controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed: and detecting whether the working performance of the second power supply meets a preset condition, controlling the third circuit breaker to be switched off and controlling the second circuit breaker to be switched on under the conditions that the working performance of the second power supply meets the preset condition and no locking signal exists.
In the case that the first voltage is not detected and the first current is not detected, the method further comprises the following steps of controlling the first breaker to be opened and controlling the third breaker to be closed: under the condition that the third current is detected to be increased to a second preset current value within preset time, controlling a third circuit breaker to be switched off; in the case that the second voltage is not detected and the second current is not detected, the method further comprises the following steps of controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed: and under the condition that the third current is detected to be increased to a second preset current value within the preset time, controlling the third circuit breaker to be opened.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. A control system, comprising:
the protection module is used for collecting a first voltage on a first power supply, a second voltage on a second power supply, a third voltage on a first bus, a fourth voltage on a second bus, a first current between the first power supply and the first bus, a second current between the second power supply and the second bus, and a third current between the first bus and the second bus, wherein the first power supply supplies power to the first bus, the second power supply supplies power to the second bus, the first bus is used for driving a first preset number of groups of coolers to work, and the second bus is used for driving a second preset number of groups of coolers to work;
the protection module is also respectively connected with a first circuit breaker, a second circuit breaker and a third circuit breaker, wherein the first circuit breaker is arranged between the first power supply and the first bus, the second circuit breaker is arranged between the second power supply and the second bus, and the third circuit breaker is arranged between the first bus and the second bus;
the control module is used for receiving the data collected by the protection module and controlling the on-off of the first circuit breaker, the on-off of the second circuit breaker and the on-off of the third circuit breaker based on the data collected by the protection module;
wherein the control module is further configured to detect the first voltage, the second voltage, the first current, and the second current when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is open;
under the condition that the first voltage is not detected and the first current is not detected, controlling the first circuit breaker to be opened and controlling the third circuit breaker to be closed; or under the condition that the second voltage is not detected and the second current is not detected, controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed;
under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, controlling the first circuit breaker to be switched off; or under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, controlling the second circuit breaker to be switched off;
under the condition that the first voltage is not detected and the first current is not detected, controlling the first circuit breaker to be opened, and controlling the third circuit breaker to be closed, and then controlling the third circuit breaker to be opened under the condition that the third current is detected to be increased to a second preset current value within preset time;
and under the condition that the second voltage cannot be detected and the second current cannot be detected, controlling the second circuit breaker to be opened, and controlling the third circuit breaker to be closed, and after detecting that the third current is increased to the second preset current value within preset time, controlling the third circuit breaker to be opened.
2. The system of claim 1, wherein the protection module comprises a first voltage transformer, a second voltage transformer, a third voltage transformer, and a fourth voltage transformer, the first voltage transformer is configured to collect the first voltage, the second voltage transformer is configured to collect the second voltage, the third voltage transformer is configured to collect the third voltage, and the fourth voltage transformer is configured to collect the fourth voltage.
3. The system of claim 1, wherein a first current transformer is disposed between the first power source and the first bus, a second current transformer is disposed between the second power source and the second bus, and a third current transformer is disposed between the first bus and the second bus, wherein the first current is collected by the first current transformer, the second current is collected by the second current transformer, and the third current is collected by the third current transformer.
4. The system of claim 1, further comprising:
and the touch display screen is used for displaying the data acquired by the protection module and triggering an instruction for controlling the on-off of the first circuit breaker, an instruction for controlling the on-off of the second circuit breaker and an instruction for controlling the on-off of the third circuit breaker.
5. A control method applied to the control system according to any one of claims 1 to 4, comprising:
detecting the first voltage, the second voltage, the first current, and the second current when the first circuit breaker and the second circuit breaker are closed and the third circuit breaker is open;
under the condition that the first voltage is not detected and the first current is not detected, controlling the first circuit breaker to be opened and controlling the third circuit breaker to be closed; or under the condition that the second voltage is not detected and the second current is not detected, controlling the second circuit breaker to be opened and controlling the third circuit breaker to be closed;
under the condition that the first voltage is detected and the first current is increased to a first preset current value within preset time, controlling the first circuit breaker to be switched off; or under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, controlling the second circuit breaker to be switched off;
after controlling the first circuit breaker to open and the third circuit breaker to close in the case that the first voltage is not detected and the first current is not detected, the method further comprises: under the condition that the third current is detected to be increased to a second preset current value within preset time, controlling the third circuit breaker to be switched off;
in the case that the second voltage is not detected and the second current is not detected, after controlling the second circuit breaker to open and controlling the third circuit breaker to close, the method further includes: and under the condition that the third current is detected to be increased to the second preset current value within the preset time, controlling the third circuit breaker to be switched off.
6. The method of claim 5, wherein after controlling the first circuit breaker to open in the event that the first voltage is detected and the first current increases to a first preset current value within a preset time, the method further comprises determining that the first bus bar is faulty; or after the second circuit breaker is controlled to be opened under the condition that the second voltage is detected and the second current is increased to the first preset current value within the preset time, determining that the second bus has a fault;
generating a blocking signal for stopping generation of a target command after determining that the first bus bar is faulty or determining that the second bus bar is faulty, wherein the target command is used for a controller to control closing of the first circuit breaker, the second circuit breaker and the third circuit breaker.
7. The method of claim 6, wherein after the first circuit breaker is controlled to open and the third circuit breaker is controlled to close in the absence of the first voltage and the first current, the method further comprises: detecting whether the working performance of the first power supply meets a preset condition, and controlling the third circuit breaker to be opened and the first circuit breaker to be closed under the conditions that the working performance of the first power supply meets the preset condition and the locking signal does not exist;
in the case that the second voltage is not detected and the second current is not detected, after controlling the second circuit breaker to open and controlling the third circuit breaker to close, the method further includes: and detecting whether the working performance of the second power supply meets a preset condition, wherein the working performance of the second power supply meets the preset condition, and under the condition that the locking signal does not exist, the third circuit breaker is controlled to be opened, and the second circuit breaker is controlled to be closed.
8. A storage medium characterized by comprising a stored program, wherein the program executes the control method of any one of claims 5 to 7.
9. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the control method according to any one of claims 5 to 7 when running.
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| CN112260297B (en) * | 2020-10-26 | 2022-08-26 | 上海电气分布式能源科技有限公司 | Double-bus grid-connected energy storage system management method, device, equipment and medium |
| CN113380585B (en) * | 2021-06-07 | 2022-07-26 | 上海凡特实业有限公司 | Intelligent circuit breaker and control method thereof |
| CN114172136B (en) * | 2021-11-26 | 2023-10-24 | 贵州电网有限责任公司 | Fault isolation system for preventing detection misoperation |
| CN114336539B (en) * | 2021-12-31 | 2024-02-23 | 苏州汇川控制技术有限公司 | Short-circuit protection device determining method, short-circuit protection circuit, equipment and storage medium |
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| US6714022B2 (en) * | 2001-02-20 | 2004-03-30 | Gary Hoffman | Apparatus and method for cooling power transformers |
| CN202797910U (en) * | 2012-09-19 | 2013-03-13 | 深圳供电局有限公司 | Standby self-start blocking device in 10kV power distribution room of intelligent substation |
| CN203039356U (en) * | 2013-01-08 | 2013-07-03 | 曾宪章 | 10kV inlet wire protection monitoring device |
| CN106207985B (en) * | 2016-08-29 | 2018-08-31 | 国网江苏省电力公司镇江供电公司 | Incoming relay-protection subsidiary discriminant sectionalized single busbar connection bus differential protection is latched spare power automatic switching method |
| CN106300292B (en) * | 2016-08-29 | 2018-10-12 | 国网江苏省电力公司镇江供电公司 | 110kV incoming relay-protections synthesis locking prepared auto restart relay protecting method |
| CN106169740B (en) * | 2016-08-29 | 2018-08-31 | 国网江苏省电力公司镇江供电公司 | 110kV single-trunk segmental wiring incoming relay-protections are latched prepared auto restart relay protecting method |
| CN107317308B (en) * | 2017-07-28 | 2019-04-05 | 国网江苏省电力公司镇江供电公司 | Sectionalized single busbar connection 110kV bus differential protection is adaptively latched prepared auto restart guard method |
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