CN112838615A - Control system for splitting generator set - Google Patents
Control system for splitting generator set Download PDFInfo
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- CN112838615A CN112838615A CN202110007544.0A CN202110007544A CN112838615A CN 112838615 A CN112838615 A CN 112838615A CN 202110007544 A CN202110007544 A CN 202110007544A CN 112838615 A CN112838615 A CN 112838615A
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- generator set
- splitting
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application discloses a control system for generator set disconnection, which relates to the technical field of power generation and aims to solve the technical problem that the safety and stability of a power grid are influenced due to the fact that a generator set is stopped with load; the control power supply module, the splitting logic module, the control module and the generator set are sequentially connected; the control power supply module is used for outputting a voltage signal; the splitting logic module is used for receiving the voltage signal, generating a splitting signal based on the voltage signal under the condition that a specified condition is met, and transmitting the splitting signal to the control module; the control module is used for receiving the splitting signal and sending a splitting control instruction to the generator set; the generator set is used for receiving the splitting control instruction and controlling splitting according to the splitting control instruction; wherein the specified conditions include: the current value of the generator set meets the splitting condition and the load of the generator set meets the splitting condition.
Description
Technical Field
The application relates to the technical field of power generation, in particular to a control system for splitting a generator set.
Background
At present, the power system of many large-scale thermal power plants adopts 3/2 circuit breaker mode of connection, establishes ties three circuit breakers between double bus, has two between three circuit breakers to be qualified for the next round of competitions, and a play line can connect the generator set and supply power to the electric wire netting, and another play line can connect the power consumption circuit, and like this, when arbitrary circuit breaker overhauls or breaks down, generating set and power consumption circuit all do not have a power failure.
In the correlation technique, because the generating set sets up between middle circuit breaker and limit circuit breaker, under the condition that middle circuit breaker overhauld or trouble (middle circuit breaker is in the position of separating the floodgate promptly), can drive generating set normal operating in order to supply power to the electric wire netting by limit circuit breaker, this moment limit circuit breaker is in the position of closing the floodgate.
However, since the reliability of the auxiliary switch contact of the side breaker connected to the genset is low, for example, the auxiliary switch contact of the side breaker is stuck, and the phenomenon of similar connection or disconnection occurs, the position of the side breaker reflected by the auxiliary switch contact of the side breaker is incorrect, and the side breaker actually at the closing position is reflected by the auxiliary switch contact of the side breaker as being at the opening position. The power Control System detects that the middle breaker and the side breaker are both in the opening position, namely detects that the generator set does not carry a load, and the generator set meets the set disconnection condition, so that a disconnection signal is sent to a thermal Distributed Control System (DCS) System by mistake, the generator set is disconnected with the load, and the safe and stable operation of a power grid is influenced.
Disclosure of Invention
In a first aspect, an embodiment of the present application provides a control system for generator set splitting, including: the control power supply module, the splitting logic module, the control module and the generator set are controlled; the control power supply module, the splitting logic module, the control module and the generator set are sequentially connected; the control power supply module is used for outputting a voltage signal; the splitting logic module is used for receiving the voltage signal, generating a splitting signal based on the voltage signal under the condition that a specified condition is met, and transmitting the splitting signal to the control module; the control module is used for receiving the splitting signal and sending a splitting control instruction to the generator set; the generator set is used for receiving the splitting control instruction and controlling splitting according to the splitting control instruction; wherein the specified conditions include: the current value of the generator set meets the splitting condition and the load of the generator set meets the splitting condition.
The embodiment of the application can achieve the following beneficial effects: the generator set is controlled to be disconnected under the condition that the current value of the generator set meets the disconnection condition and the load of the generator set meets the disconnection condition, so that the disconnection signal is not triggered when the current value of the generator set does not meet the disconnection condition, the risk that the disconnection signal is mistakenly sent due to the fact that whether the load of the generator set meets the disconnection condition or not is avoided, the probability that the generator set is disconnected with load is reduced, and safe and stable operation of a power grid is guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural block diagram of a control system for generator set splitting according to an embodiment of the present disclosure;
fig. 2 is a schematic structural block diagram of a control system for generator set splitting according to an embodiment of the present disclosure;
fig. 3 is a schematic structural block diagram of a control system for generator set splitting according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the 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.
The features of the terms first, second and third in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a mechanical or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
At present, when a power system or a generator set needs to be normally stopped due to operation, the generator needs to be disconnected so as to stop the generator from operating. During the normal splitting process of the generator, the active load and the reactive load of the generator need to be subtracted, and then the generator is split. Otherwise, if the generator is disconnected with a load, the disconnected generator generates overvoltage due to sudden load shedding, so that the generator fails, and the power system is easily collapsed due to expansion of generator failure accidents. Based on this, the generator set can be provided with a plurality of splitting points provided with automatic splitting devices at proper positions in general. When the power system or the generator set needs to be normally shut down, the power system or the generator set can be automatically split into a plurality of parts which can be balanced in supply and demand and synchronously run respectively, and the system is prevented from being broken down due to expansion of accidents.
Specifically, in the related art, the circuit breaker for disconnection is provided with an automatic disconnection device, and the power system can adopt 3/2 circuit breaker connection mode, three circuit breakers are connected in series between double buses, two outgoing lines are arranged between the three circuit breakers, one outgoing line can be connected with a power generation unit to supply power to a power grid, and the other outgoing line can be connected with a power utilization line to supply power to places such as factories and schools, wherein the three circuit breakers comprise two side circuit breakers and a middle circuit breaker. Therefore, when two buses or any one circuit breaker is overhauled or has a fault, the generator set and the power circuit are not powered off, and the power supply reliability is high. In 3/2 circuit breaker wiring mode power systems, it is necessary to satisfy the disconnection condition to normally disconnect the generator set without a load. The splitting condition is that the intermediate circuit breaker and the side circuit breaker are judged to be in the opening position through logic, the generator set does not have load at the moment, the splitting condition of the generator set is met, and the splitting signal can be sent to the thermal DCS distributed control system, so that the generator set is controlled to be normally split. However, in the related art, when the intermediate breaker is in the open position during the maintenance or failure of the intermediate breaker, the side breaker is in the close position, and the side breaker with the generator set normally operates to supply power to the grid. Wherein, limit circuit breaker switch auxiliary contact can be used for reflecting the position (the combined floodgate position/branch floodgate position) of limit circuit breaker, because limit circuit breaker switch auxiliary contact reliability is lower, for example limit circuit breaker switch auxiliary contact adhesion, the similar non-phenomenon that connects etc. exists, and the limit circuit breaker position that leads to limit circuit breaker switch auxiliary contact to reflect is incorrect: the side breaker actually in the on position is reflected by the side breaker switch auxiliary contact as being in the off position. At the moment, the intermediate circuit breaker and the side circuit breaker are detected to be in the opening positions, and the unit disconnection condition is met, so that a disconnection signal is sent to the thermal DCS distributed control system by mistake, the generator set is controlled to stop running under the load, and the safe and stable running of a power grid is influenced.
In order to solve the technical problem that the power generating set stops running with load due to the fact that a splitting signal is sent by mistake and safe and stable running of a power grid is affected, the embodiment of the application provides a control system for splitting of the power generating set, a new criterion, namely a generator terminal current blocking condition is added (when the current value of the power generating set reaches a set value, the power generating set is judged to be still in a normal running state with load, the splitting signal is not triggered), the risk that whether the load of the power generating set meets the splitting condition or not and the splitting signal is sent by mistake due to the fact that the position of a middle breaker and a side breaker is judged in related technologies is avoided, the probability of splitting of the power generating set with load is reduced, and safe and stable running of the power grid is guaranteed.
The control system for generator set splitting provided by the embodiment of the application is described below with reference to fig. 1 to 3.
As shown in fig. 1, a control system for generator set splitting provided in an embodiment of the present application may include: the control power supply module, the splitting logic module, the control module and the generator set are controlled;
the control power module, the splitting logic module, the control module and the generator set are sequentially connected;
the control power supply module is used for outputting a voltage signal;
the splitting logic module is used for receiving the voltage signal, generating a splitting signal based on the voltage signal under the condition that a specified condition is met, and transmitting the splitting signal to the control module;
the control module is used for receiving the splitting signal and sending a splitting control instruction to the generator set;
the generator set is used for receiving the splitting control instruction and controlling splitting according to the splitting control instruction;
wherein the specified conditions include: the current value of the generator set meets the splitting condition and the load of the generator set meets the splitting condition.
In the embodiment of the application, the control power supply module, the splitting logic module and the control module can be connected through electric wires; the control module and the generator set can be in wired connection or wireless connection, and the application does not specifically limit the connection.
In this embodiment of the present application, the control power module may be a dc power supply and may output a voltage signal, where the voltage signal may be a positive electrical signal or a negative electrical signal, and this application is not particularly limited thereto.
In the embodiment of the present application, the splitting logic module may include a relay having an automatic switching function. The splitting logic module generates a splitting signal based on the voltage signal when a specified condition is met, and specifically may be: when the predetermined condition is satisfied, the logic de-queue module is in a conducting state, and the voltage signal is output as a signal de-queue via the logic de-queue module, where a voltage value of the signal de-queue may be equal to or not equal to a voltage value of the voltage signal, and this application is not limited in this respect.
In this embodiment, the control module may be an operation station in a thermal DCS distributed control system, or may be a processor having a processing function, and the control module may send a splitting control instruction to control splitting of the generator set. The generator set can be normally disconnected, namely the generator set is controlled to stop running after the output power of the generator set is reduced to the minimum value allowed, so that the safe and stable running of a power grid is ensured.
In an embodiment of the present application, the specified conditions include: the current value of the generator set meets the splitting condition and the load of the generator set meets the splitting condition.
The current value of the generator set meets the splitting condition, and the splitting condition specifically comprises the following steps: and under the condition that the current value of the generator set is smaller than a threshold value, the current value of the generator set meets a disconnection condition, and the threshold value can be the current value when the generator set normally operates. The condition that the current value of the generator set is larger than the threshold value indicates that the generator set does not meet the splitting condition in normal operation; and the condition that the current value of the generator set is smaller than the threshold value indicates that the current value of the generator set is smaller than the current value of the generator set in normal operation, and the generator set meets the disconnection condition.
Wherein, the load of generating set satisfies the condition of splitting, specifically includes: and under the condition that the generator set does not have load, the load of the generator set meets the disconnection condition. It can be understood that, under the condition that the generator set is under load, if the generator set is disconnected, sudden load shedding in the disconnecting process of the generator set can cause the fault of the generator set, and the generator set does not meet the disconnection condition; and under the condition that the generator set does not have load, the generator set meets the disconnection condition and can be normally disconnected.
In this application embodiment, the mode of judging whether generating set is loaded specifically is, judges whether generating set is loaded through the position of judging the middle circuit breaker at generating set both ends and limit circuit breaker. Specifically, in an 3/2 circuit breaker connection mode power system, three circuit breakers are connected in series between double buses, two outgoing lines are arranged between the three circuit breakers, and one outgoing line can be connected with a generator set to supply power to a power grid. That is, the genset may generally be disposed between the middle circuit breaker and the side circuit breaker. If the intermediate circuit breakers and the side circuit breakers at the two ends of the generator set are detected to be in the brake separating position, determining that the generator set does not have load; and if at least one of the middle circuit breaker and the side circuit breaker at the two ends of the generator set is detected to be in a switching-on position, determining that the generator set is loaded.
It should be noted that, in the related art, the position of the circuit breaker is generally reflected by the auxiliary contact of the circuit breaker switch, wherein the position of the circuit breaker includes a switching-on position or a switching-off position, and the circuit breaker switch auxiliary contact has low reliability, such as adhesion of the auxiliary contact of the circuit breaker switch, presence of a non-connection-like phenomenon, and the like, so that the position of the circuit breaker reflected by the auxiliary contact of the circuit breaker switch may be incorrect. If the generator set is judged to be loaded only by judging the positions of the middle circuit breakers and the side circuit breakers at the two ends of the generator set, the risk of misjudgment exists, a splitting signal is missent, the generator set is split under the condition that the generator set does not meet the splitting condition actually, and the safe and stable operation of a power grid is influenced.
According to the control system for splitting the generator set, whether the generator set meets the specified conditions is judged through the splitting logic module, and the generator set is controlled to be split; specifically, whether the generator set meets the splitting condition is judged by judging whether the current value of the generator set meets the splitting condition and whether the load of the generator set meets the splitting condition; and under the condition that the current value of the generator set meets the disconnection condition and the load of the generator set meets the disconnection condition, outputting a disconnection signal to control the generator set to perform disconnection. Therefore, the risk that the splitting signal is mistakenly sent only by judging whether the load of the generator set meets the splitting condition in the related technology is avoided, the probability of splitting the generator set with the load is reduced, and the safe and stable operation of a power grid is ensured.
As shown in fig. 2, in the control system for generator set splitting provided in the embodiment of the present application, the splitting logic module includes a first relay and a second relay connected in series, and the first relay is configured to determine whether a current value of the generator set satisfies a splitting condition; and the second relay is used for judging whether the load of the generator set meets the splitting condition.
It can be understood that, on the basis that the splitting logic module includes the first relay and the second relay connected in series, the splitting logic module generates the splitting signal based on the voltage signal when a specified condition is satisfied, and specifically includes: the splitting logic module is used for generating a splitting signal based on the voltage signal under the condition that the first relay judges that the current value of the generator set meets the splitting condition and the second relay judges that the load of the generator set meets the splitting condition.
It should be noted that, because the relay includes the control coil and the contact that are isolated from each other, the isolation between the control coil and the contact is high, and simultaneously, the high current in the contact is controlled through the small current in the control coil, and the security is higher compared with the ordinary switch. In the embodiment of the application, whether the splitting logic module meets the specified conditions or not is judged through the first relay and the second relay, and the splitting signal is generated based on the voltage signal, so that the current value and the load condition of the generator set can be acquired more safely, and whether the current value and the load condition of the generator set meet the specified conditions or not is judged.
In addition, the embodiment of the present application does not limit the specific types of the first relay and the second relay, for example, the first relay may be an intermediate relay, the second relay may be a two-position relay, and the like.
According to the control system for splitting the generator set, whether the generator set meets the specified conditions is judged through the splitting logic module, and the generator set is controlled to be split; specifically, whether the current value of the generator set meets the splitting condition or not is judged through a first relay, and whether the load of the generator set meets the splitting condition or not is judged through a second relay, so that whether the generator set meets the splitting condition or not is judged; and under the condition that the current value of the generator set meets the disconnection condition and the load of the generator set meets the disconnection condition, outputting a disconnection signal to control the generator set to perform disconnection. Therefore, the risk that the splitting signal is mistakenly sent only by judging whether the load of the generator set meets the splitting condition in the related technology is avoided, the probability of splitting the generator set with the load is reduced, and the safe and stable operation of a power grid is ensured.
As shown in fig. 3, an embodiment of the present application provides a control system for generator set disconnection, and in the control system for generator set disconnection provided in an embodiment of the present application, the first relay includes a first contact and a first control coil, one end of the first contact is connected to the control power supply module, and the other end of the first contact is connected to the second relay.
The first contact is a contact which is in an open state under the condition that the first control coil is electrified and is separated from the first control coil, and the first control coil is used for excitation under the electrified state so as to control the first contact to be opened.
It can be understood that, taking the first relay as an intermediate relay as an example, the first contact may be a normally closed contact, and the first contact is in a closed state in a non-energized state of the first control coil; the first contact is in an open state in a state where the first control coil is energized. In the first relay, the first contact and the first control coil are separated from each other, and the first control coil is used for controlling an output loop where the first contact is located to be in an off state. In this way, under the condition that the current value of the generator set is judged not to meet the disconnection condition, the current value of the generator set is larger than the threshold value, the first control coil is in the energized state, and the first control coil is excited in the energized state to control the first contact to be opened; the logic module may not generate the splitting signal based on the voltage signal if the first contact is open.
As shown in fig. 3, in the control system for splitting the generator set provided in the embodiment of the present application, the second relay includes a second contact and a second control coil, one end of the second contact is connected to the first relay, and the other end of the second contact is connected to the control module.
The second contact is a contact which is in a closed state under the condition that the second control coil is electrified and is separated from the second control coil, and the second control coil is used for excitation under the electrified state so as to control the second contact to be closed.
It can be understood that, taking the second relay as an example of a two-position relay, the second contact may be a closed contact, i.e., the second contact is in an open state in a non-energized state of the second control coil; the second contact is in a closed state in the energized state of the second control coil. In the second relay, the second contact and the second control coil are separated from each other, and the second control coil is used for controlling an output loop where the second contact is located to be in a closed state, so that the second control coil is in an unpowered state under the condition that the load of the generator set is judged to meet the unlaying condition, the second control coil controls the second contact to be opened under the unpowered state, and the unlaying logic module cannot generate the unlaying signal based on the voltage signal under the condition that the second contact is opened.
As shown in fig. 3, in the control system for splitting the generator set provided in the embodiment of the present application, the control power module, the first contact, the second contact, the control module, and the generator set are sequentially connected.
It can be understood that, on the basis that the first relay includes the first contact and the second relay includes the second contact, the splitting logic module generates the splitting signal based on the voltage signal when a specified condition is satisfied, and specifically includes: the splitting logic module is used for generating a splitting signal based on the voltage signal under the condition that the first contact is closed and the second contact is closed.
According to the control system for splitting the generator set, whether the generator set meets the specified conditions is judged through the splitting logic module, and the generator set is controlled to be split; specifically, whether the current value of the generator set meets the splitting condition or not is judged through a first relay, and whether the load of the generator set meets the splitting condition or not is judged through a second relay, so that whether the generator set meets the splitting condition or not is judged; controlling the first contact to be closed under the condition that the current value of the generator set meets the disconnection condition, and controlling the second contact to be closed under the condition that the load of the generator set meets the disconnection condition; and under the condition that the first contact is closed and the second contact is closed, generating a disconnection signal based on the voltage signal, and outputting the disconnection signal to control the generator set to perform disconnection. Therefore, the risk that the splitting signal is mistakenly sent only by judging whether the load of the generator set meets the splitting condition in the related technology is avoided, the probability of splitting the generator set with the load is reduced, and the safe and stable operation of a power grid is ensured.
As shown in fig. 3, in the control system for splitting the generator set provided in the embodiment of the present application, the control system further includes: the first relay control module is connected with two ends of the first control coil and used for controlling the first control coil, and in addition, the first relay control module is connected with the generator set. Wherein the first relay control module is configured to: when the current value of the generator set is larger than a threshold value, controlling the first control coil to be electrified; and when the current value of the generator set is smaller than a threshold value, controlling the first control coil not to be electrified.
In a particular embodiment, the first relay control module includes at least a current relay. The current relay is respectively connected with the generator set and the first control coil and used for controlling the first control coil to be electrified when the current value of the generator set is larger than a threshold value. For example, the current relay includes a third contact that is a contact in a closed state when the third control coil is energized and is separated from the third control coil, and a third control coil that is connected to the generator set, the third contact being connected to the first control coil. In this way, when the current value of the generator set is greater than the threshold value, the third control coil is electrified; the third control coil is excited in a power-on state to control the closing of a third contact; and when the third contact is in a closed state, controlling the first control coil to be electrified. When the current value of the generator set is smaller than the threshold value, the third control coil is not electrified; the third control coil controls a third contact to be opened in a power-off state; and when the third contact is in an open state, controlling the first control coil not to be electrified.
As shown in fig. 3, in the control system for splitting the generator set provided in the embodiment of the present application, the control system further includes: and a second relay control module. In addition, the second relay control module is connected with the generator set. Wherein, the second relay control module is connected with both ends of the second control coil and is used for: and controlling the second control coil to be electrified when the generator set is not loaded.
In a specific embodiment, the second relay control module comprises a first bus, a first switch auxiliary contact, a second bus; the first bus, the first switch auxiliary contact, the second control coil, and the second bus are connected in series in sequence. The second relay control module is configured to: and when the first switch auxiliary contact and the second switch auxiliary contact are in a closed state, controlling the second control coil to be electrified.
For example, the second relay control module may include an edge breaker and an intermediate breaker, the generator set being disposed between the edge breaker and the intermediate breaker, the first switch auxiliary contact being an auxiliary contact of the edge breaker, and the second switch auxiliary contact being an auxiliary contact of the intermediate breaker. It can be appreciated that in an 3/2 circuit breaker wired power system, with the genset unloaded, the edge and middle circuit breakers are in the tripped positions; when the side circuit breaker and the middle circuit breaker are both in the opening position, the first switch auxiliary contact and the second switch auxiliary contact are both in a closed state; the first bus may be a positive electric signal line, the second bus may be a negative electric signal line, and when the first switch auxiliary contact and the second switch auxiliary contact are both in a closed state, the second control coil is in a closed state in a loop including the first bus, the first switch auxiliary contact, the second control coil, and the second bus, so as to control the second control coil to be energized.
The first switch auxiliary contact can be a multi-phase auxiliary contact, such as a two-phase or three-phase auxiliary contact, so that under the condition that at least 2 or 3 auxiliary contacts are closed simultaneously, the first switch auxiliary contact can reflect that the side breaker is in the opening position.
According to the control system for splitting the generator set, whether the generator set meets the specified conditions is judged through the splitting logic module, and the generator set is controlled to be split; specifically, whether the current value of the generator set meets the splitting condition or not is judged through a first relay, and whether the load of the generator set meets the splitting condition or not is judged through a second relay, so that whether the generator set meets the splitting condition or not is judged; the first control coil is controlled not to be electrified under the condition that the current value of the generator set meets the disconnection condition so as to control the first contact to be closed, and the second control coil is controlled to be electrified under the condition that the load of the generator set meets the disconnection condition so as to control the second contact to be closed; and under the condition that the first contact is closed and the second contact is closed, generating a disconnection signal based on the voltage signal, and outputting the disconnection signal to control the generator set to perform disconnection. Therefore, the risk that the splitting signal is mistakenly sent only by judging whether the load of the generator set meets the splitting condition in the related technology is avoided, the probability of splitting the generator set with the load is reduced, and the safe and stable operation of a power grid is ensured.
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). 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 like elements in a 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 description is only an example of the present application and is 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 (10)
1. A control system for genset splitting comprising:
the control power supply module, the splitting logic module, the control module and the generator set are controlled;
the control power supply module, the splitting logic module, the control module and the generator set are sequentially connected;
the control power supply module is used for outputting a voltage signal;
the splitting logic module is used for receiving the voltage signal, generating a splitting signal based on the voltage signal under the condition that a specified condition is met, and transmitting the splitting signal to the control module;
the control module is used for receiving the splitting signal and sending a splitting control instruction to the generator set;
the generator set is used for receiving the splitting control instruction and controlling splitting according to the splitting control instruction;
wherein the specified conditions include: the current value of the generator set meets the splitting condition and the load of the generator set meets the splitting condition.
2. The generator set disconnection control system according to claim 1, wherein the disconnection logic module comprises a first relay and a second relay which are connected in series, and the first relay is used for judging whether a current value of the generator set meets a disconnection condition; and the second relay is used for judging whether the load of the generator set meets the splitting condition.
3. The genset split control system of claim 2 wherein the first relay comprises a first contact and a first control coil, one end of the first contact is connected to the control power module and the other end of the first contact is connected to the second relay; the first contact is a contact which is in an open state when the first control coil is electrified and is separated from the first control coil, and the first control coil is used for excitation in the electrified state so as to control the first contact to be opened.
4. The genset split control system of claim 2 wherein the second relay comprises a second contact and a second control coil, one end of the second contact is connected to the first relay and the other end of the second contact is connected to the control module; the second contact is a contact which is in a closed state when the second control coil is electrified and is separated from the second control coil, and the second control coil is used for excitation in the electrified state so as to control the second contact to be closed.
5. The genset split control system of claim 4 wherein the second relay is a two position relay,
the control power supply module, the first contact, the second contact, the control module and the generator set are connected in sequence.
6. The genset split control system of claim 3 further comprising: the first relay control module is connected with two ends of the first control coil and is used for controlling the first control coil; the first relay control module is connected with the generator set.
7. The genset split control system of claim 6 wherein the first relay control module is to: and when the current value of the generator set is larger than a threshold value, controlling the first control coil to be electrified.
8. The genset split control system of claim 4 further comprising a second relay control module; the second relay control module is connected with two ends of the second control coil and is used for: controlling the second control coil to be electrified when the generator set is not loaded; the second relay control module is connected with the generator set.
9. The genset split control system of claim 8 wherein the second relay control module comprises a first bus, a first switch auxiliary contact, a second bus;
the first bus, the first switch auxiliary contact, the second control coil, and the second bus are connected in series in sequence.
10. The genset split control system of claim 9 wherein the second relay control module is to: and when the first switch auxiliary contact and the second switch auxiliary contact are in a closed state, controlling the second control coil to be electrified.
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| CN202110007544.0A CN112838615B (en) | 2021-01-05 | 2021-01-05 | Control system for generator set splitting |
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| CN202110007544.0A CN112838615B (en) | 2021-01-05 | 2021-01-05 | Control system for generator set splitting |
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