CN115800550B - Intelligent regulation and control device and method for power generation system - Google Patents
Intelligent regulation and control device and method for power generation system Download PDFInfo
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Abstract
The invention relates to an intelligent regulation and control device for a power generation system and a method thereof, wherein the intelligent regulation and control device comprises a field detection terminal, an electric power main detection mechanism, a dispatching control circuit and a communication gateway, the electric power main detection mechanism is electrically connected with the field detection terminal through a wire, the field detection terminal is electrically connected with the dispatching control circuit through a wire, the dispatching control circuit is connected with the communication gateway through a data wire, and the regulation and control method of the intelligent regulation and control device is established with an external communication network through the communication gateway and comprises three steps of equipment configuration, power generation state monitoring, power generation dispatching and the like. The invention can effectively meet the requirements of matched operation of various power generation systems, and greatly improves the use flexibility and applicability of the invention; meanwhile, in operation, the state of the power generation equipment can be accurately obtained, and the deviation rectifying operation in the system can be realized on the detection result, so that the purpose of improving the accuracy of the detection operation is achieved.
Description
Technical Field
The invention relates to an intelligent regulation and control device and method for a power generation system, and belongs to the technical field of power systems.
Background
Along with the technical development and working demands, the current power generation system is increased, and during discharging operation, a plurality of similar power generation devices or a plurality of different types of power generation devices are often required to cooperatively operate, meanwhile, the same regulation and scheduling operation is required to be carried out on the operating state of the power generation devices, the power generation efficiency, the voltage, the current and other parameters of the power generation energy according to the power grid demands and the load demands, aiming at the demands, various power generation regulation and control devices and technologies are currently developed, the patent publication number is CN114629173A, the patent name is a new energy power generation system, the energy regulation and control method and device thereof, the patent publication number is CN114928113A, the patent name is a power generation cost regulation and control method, device, medium and device are applied for the power generation devices, although the demands of the use can be met to a certain extent, when the current system operates, the system device structure is relatively single, therefore, the demands of the use of the specific power generation system can be met, the universality is poor, meanwhile, the data acquisition and monitoring means of the power generation system are single, the accurate identification and detection cannot be carried out, so that the detection data is relatively poor, and the actual precision is difficult to meet the demands of the actual regulation and control of the power generation device during the subsequent operation.
Therefore, in order to solve the problem, a new intelligent control device and a corresponding control method for the power generation system are urgently needed to be developed so as to meet the actual use requirement.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an intelligent regulation and control device and method for a power generation system.
The aim of the invention can be achieved by the following technical scheme:
an intelligent regulation and control device for a power generation system comprises a field detection terminal, an electric power main detection mechanism, a dispatching control circuit and a communication gateway, wherein the electric power main detection mechanism is electrically connected with at least one field detection terminal through a wire, the field detection terminal is electrically connected with the dispatching control circuit through a wire, in addition, the dispatching control circuit is connected with the communication gateway through a data wire, and is in data connection with an external communication network through the communication gateway, the field detection terminal comprises a bearing frame, a universal coupling, a rotating speed sensor, a transmission shaft, an auxiliary generator, a current detection circuit, a voltage detection circuit and a control circuit, the bearing frame is of a frame structure with a rectangular axial section, the auxiliary generator is connected with one end of the bearing frame through a damping base, the auxiliary generator is connected with one end of the transmission shaft through the universal coupling, the other end of the transmission shaft is connected with an output shaft of the generator to be detected, the auxiliary generator is further connected with the rotating speed sensor through the transmission shaft, the current detection circuit, the voltage detection circuit and the control circuit are embedded in the bearing frame through data wires, the current detection circuit, the voltage detection circuit and the control circuit are electrically connected with the auxiliary generator through wires, the voltage detection circuit and the voltage detection circuit are respectively, the voltage detection circuit and the control circuit are connected with the control circuit and the control circuit respectively, the control circuit is in turn connected with a control motor electric cabinet, the main current detection circuit, a current detector, a voltage detector, a current detector, a voltage detector, a feed-forward circuit, a voltage controller, a current controller, a feed-forward circuit, a voltage controller, and a PID controller, and a voltage controller, and a feed-forward controller, the connecting terminals are electrically connected with the power output terminals of the generator to be detected through wires, meanwhile, the connecting terminals are electrically connected with the power busbar, the power busbar is a plurality of power busbars, two parallel feedback detection circuits are formed, each feedback detection circuit is respectively and electrically connected with the PID controller, the current detection circuit and the voltage detection circuit, and meanwhile, the input end of one feedback detection circuit is directly and electrically connected with the connecting terminals; the input end of the other feedback detection circuit is electrically connected with the exciting motor, the exciting motor is electrically connected with the wiring terminal and the feedforward MFA controller through wires respectively, the feedforward MFA controller, each PID controller, the current detection circuit and the voltage detection circuit are electrically connected with the control circuit respectively, the field detection terminal and the control circuit of the electric power main detection mechanism are electrically connected with the dispatching control circuit through wires respectively, and the control circuit of the field detection terminal is electrically connected with the control circuit of the electric power main detection mechanism.
Furthermore, when the transmission shaft is connected with the output shaft of the generator to be detected through the universal coupling, the universal coupling is directly connected with the output shaft of the generator to be detected and indirectly connected through the transmission mechanism, and when the transmission mechanism is indirectly connected, the output shaft of the generator to be detected is connected with the input shaft of the transmission mechanism, and the universal coupling is connected with one output shaft of the transmission mechanism.
Further, the transmission mechanism is any one of a transmission belt, a transmission chain, a gear box and a gear set.
Further, a baffle plate and at least one bracket are arranged in the power distribution cabinet, the baffle plate and the bracket are embedded in the power distribution cabinet, the baffle plate and the power distribution cabinet are coaxially distributed, the power distribution cabinet is divided into an electric control cavity and a power distribution cavity from top to bottom, the exciting motor and the wiring terminals are all positioned in the electric control cavity and connected with the baffle plate, the feedforward MFA controller, the PID controller, the current detection circuit, the voltage detection circuit and the control circuit are all positioned in the electric control cavity and are respectively connected with the power distribution cabinet through the bracket, the baffle plate and the bracket are of a frame structure with rectangular cross sections, the bracket comprises a bearing base, a bearing frame, a turntable mechanism, guide sliding grooves, telescopic adjusting columns and positioning pins, the bearing base is of a columnar structure with rectangular cross sections, the two bearing bases are symmetrically distributed on two sides of a central line of the power distribution cabinet, the bearing frame is of a rectangular plate-shaped frame structure with a cross section, is positioned between two bearing bases and hinged with the bearing base side wall through a turntable mechanism, the surface of the bearing frame and the axis of the power distribution cabinet form an included angle of 0-90 degrees, the corresponding bearing frame side wall of the turntable mechanism is provided with guide sliding grooves which are distributed in parallel with the axis of the bearing frame and are in sliding connection, the front end surface and the rear end of the bearing base are both provided with a telescopic adjusting column, the rear end of the telescopic adjusting column is hinged with the bearing base through a ratchet mechanism, the axis of the bearing base is intersected with the axis of the telescopic adjusting column and forms an included angle of 0-180 degrees, the intersection is positioned below the turntable mechanism and is spaced from the turntable mechanism by 50-90 percent of the minimum length of the telescopic adjusting column, the front end surface of the telescopic adjusting column is provided with a locating pin, and when the included angle between the surface of the bearing frame and the axis of the power distribution cabinet is larger than 0 degree, the front end face of the telescopic adjusting column is propped against the bearing frame through the elastic cushion block.
Further, the telescopic adjusting column is any one of at least two stages of hydraulic telescopic columns, pneumatic telescopic columns and spring telescopic columns.
Further, the control circuit is a circuit system based on an industrial computer, and is additionally provided with at least one serial port communication port, at least one I/O communication port and at least one group of wiring bars, wherein the control circuit of the field detection terminal is respectively and electrically connected with the rotating speed sensor, the output end of the auxiliary generator, the current detection circuit, the voltage detection circuit, the control circuit of the power main detection mechanism and the dispatching control circuit through the wiring bars, and meanwhile, the power main detection mechanism is respectively and electrically connected with the feedforward MFA controller, the PID controller, the current detection circuit, the voltage detection circuit and the dispatching control circuit of the power main detection mechanism through the wiring bars.
Further, the dispatching control circuit is a circuit system based on an industrial computer, and is connected with at least one control mechanism through a communication gateway, and forms a dispatching service local area network with the control mechanism, wherein the control mechanism is any one of the industrial computer, a PC computer, a network server and a mobile intelligent communication terminal.
Further, the regulation and control method of the intelligent regulation and control device for the power generation system comprises the following steps:
the method comprises the steps of S1, configuring equipment, namely firstly, respectively setting a field detection terminal for each power generation operation unit according to the number and the positions of the actual power generation operation units, connecting the field detection terminal with an output shaft of a power generator of the power generation operation unit, then, setting a power main detection mechanism, a dispatching control circuit and a communication gateway at the position of a power generation operation unit control machine room, connecting each equipment, and finally, setting independent hardware identification codes and communication addresses with each field detection terminal and the power main detection mechanism by the dispatching control circuit, and completing the configuration of the equipment by an interface;
s2, monitoring the power generation state, namely after the step S1 is completed, monitoring the power generation state of the power generation operation unit during power generation operation, wherein the monitoring operation is divided into three types of direct monitoring, indirect monitoring and modulation monitoring, and the three types of monitoring are performed simultaneously, wherein:
indirect monitoring: when the detection is carried out by the field detection terminal, firstly, the auxiliary generator of the field detection terminal synchronously operates along with the generator equipment of the generator operation unit and generates electricity, and then, on one hand, the rotation speed of the auxiliary generator is detected by the rotation speed sensor, so that the operation state parameter of the generator equipment of the generator operation unit is obtained; on the other hand, the electric energy generation amount and the electric generation state of the auxiliary generator during operation are detected through a current detection circuit and a voltage detection circuit, the detection result is analyzed and calculated through a control circuit, and the operation state parameter of the auxiliary generator is calculated through the control circuit, so that the operation state data of the generating set is indirectly obtained;
direct monitoring: the connection terminal of the electric power main detection mechanism is directly and electrically connected with the electric energy output end of the electric power operation unit, then the electric energy output end of the electric power operation unit is directly and electrically connected with the PID controller, the current detection circuit and the voltage detection circuit of the electric power main detection mechanism through the connection terminal, and the generated energy and the generated state of the electric power operation unit are detected through the PID controller, the current detection circuit and the voltage detection circuit, so that the control circuit of the electric power main detection mechanism directly obtains the operation state data of the electric power operation unit;
the method comprises the steps of modulating and monitoring, wherein a connecting terminal of a power main detection mechanism is directly and electrically connected with an electric energy output end of a power generation operation unit, then the electric energy output end of the power generation operation unit is electrically connected with an exciting motor of the power main detection mechanism through the connecting terminal, the exciting motor is driven to operate and is driven by the power generation operation unit to operate, a PID controller, a current detection circuit and a voltage detection circuit are used for detecting the operating state of the exciting motor, a control circuit of the power main detection mechanism is used for indirectly obtaining the operating state data of the power generation operation unit, then the obtained data is used as a basis, a feedforward MFA controller is used for compensating the voltage and the current value of a driving circuit of the exciting motor, the operating state of the exciting motor is adjusted, and when the operating state of the adjusted exciting motor meets a set requirement, the compensation parameter of the feedforward MFA controller is obtained by the control circuit of the power main detection mechanism, and thus the theoretical operating state after the operating state data of the power generation operation unit is modulated is obtained.
And S3, power generation dispatching, namely feeding back detection data obtained by the field detection terminal and the power main detection mechanism to the dispatching control circuit, wherein the working personnel obtain three types of power generation unit power generator operation state parameters of direct monitoring, indirect monitoring and modulation monitoring according to the dispatching control circuit, and simultaneously obtain external power load energy consumption parameters through the communication gateway, distribute power generation dispatching instructions to the power generation unit power generator, enable the power generation unit power generator to perform power generation operation according to the power generation dispatching instructions, and return to the step S2 for continuous power generation state monitoring operation after the power generation dispatching instructions are completed by the power generation unit, and delay for 3-10 minutes.
Further, when the electric power main detection mechanism is arranged, when the exciting motor in the electric power main detection mechanism is one, each electric power main detection mechanism and one field detection terminal are adopted to form a working group to operate; when the exciting motors in the electric power main detection mechanism are multiple, each exciting motor corresponds to one field detection terminal, and each field detection terminal is correspondingly provided with two feedback detection circuits in the electric power main detection mechanism.
Further, in the step S1, when the field detection terminal is configured, when the power generation unit does not have power generation equipment, only the auxiliary power generator is connected with the power output end of the power generation unit.
Compared with the prior art, the invention has the following beneficial effects:
the system has flexible and convenient structure adjustment and good expansion capability, can effectively meet the requirements of multiple power generation systems for matched operation, and greatly improves the use flexibility and applicability of the system; on the other hand, in operation, the power generation equipment state can be accurately obtained, and the deviation rectifying operation in the system can be realized on the detection result, so that the purpose of detecting operation precision is improved, and meanwhile, when the operation state of the power generation system is obtained, the power generation system can be synchronously obtained to carry out synchronous replenishment modulation mechanism, so that the requirement of regulating operation of the power generation system under different power utilization load states is met, and meanwhile, the precision and timeliness of regulating operation are improved.
Drawings
FIG. 1 is a schematic diagram of a system architecture of the present invention;
FIG. 2 is a schematic diagram of a field test terminal;
FIG. 3 is a schematic diagram of the structure of the main power detection mechanism;
fig. 4 is a schematic view of a partial structure of a bracket cross section.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
As shown in fig. 1-4, an intelligent regulation device for a power generation system includes a field detection terminal 1, a power main detection mechanism 2, a dispatching control circuit 3, and a communication gateway 4, wherein the power main detection mechanism 2 is electrically connected with at least one field detection terminal 1 through a wire, the field detection terminal 1 is further electrically connected with the dispatching control circuit 3 through a wire, in addition, the dispatching control circuit 3 is further connected with the communication gateway 4 through a data line, and establishes a data connection with an external communication network through the communication gateway 4.
In this embodiment, the field detection terminal 1 includes a bearing frame 101, a universal coupling 102, a rotation speed sensor 103, a transmission shaft 104, an auxiliary generator 105, a current detection circuit 106, a voltage detection circuit 107 and a control circuit 108, where the bearing frame 101 is a frame structure with a rectangular axial section, the auxiliary generator 105 is connected with the bearing frame 1 through the shock-absorbing base 109, the auxiliary generator 105 is connected with one end of the transmission shaft 104 through the universal coupling 102, the other end of the transmission shaft 104 is connected with an output shaft of the generator to be detected through the universal coupling 102, the auxiliary generator 105 is connected with the 103 through the transmission shaft, the current detection circuit 106, the voltage detection circuit 107 and the control circuit 108 are embedded in the bearing frame 101, the current detection circuit 106, the voltage detection circuit 107 and the control circuit 108 are all electrically connected with the auxiliary generator 105 through wires, and the current detection circuit 106 and the voltage detection circuit 107 are electrically connected with the control circuit 108.
In this embodiment, the main power detection mechanism 2 includes a power distribution cabinet 21, an exciting motor 22, a power busbar 23, a feedforward MFA controller 24, a PID controller 25, a current detection circuit 106, a voltage detection circuit 107, a connection terminal 26 and a control circuit 108, where the exciting motor 22, the power busbar 23, the feedforward MFA controller 24, the PID controller 25, the current detection circuit 106, the voltage detection circuit 107 and the control circuit 108 are all located in the power distribution cabinet 21, the connection terminal 26 is electrically connected with the power output terminal of the generator to be detected through a wire, and meanwhile the connection terminal 26 is electrically connected with the power busbar 23, and the power busbar 23 is several and forms two parallel feedback detection circuits, and each feedback detection circuit is electrically connected with the PID controller 25, the current detection circuit 106 and the voltage detection circuit 107, and at the same time, one of the input ends of the feedback detection circuits is directly electrically connected with the connection terminal 26; the input end of the other feedback detection circuit is electrically connected with the exciting motor 22, the exciting motor 22 is electrically connected with the wiring terminal 26 and the feedforward MFA controller 24 respectively through wires, the feedforward MFA controller 24, each PID controller 25, the current detection circuit 106 and the voltage detection circuit 107 are electrically connected with the control circuit 108, the field detection terminal 1 and the control circuit 108 of the electric power main detection mechanism 2 are electrically connected with the dispatching control circuit 3 respectively through wires, and the control circuit 108 of the field detection terminal 1 is electrically connected with the control circuit 108 of the electric power main detection mechanism 2.
In this embodiment, when the transmission shaft 104 is connected to the output shaft of the generator to be detected through the universal coupling 102, the universal coupling 102 is directly connected to the output shaft of the generator to be detected and indirectly connected through the transmission mechanism, and when the transmission mechanism is indirectly connected, the output shaft of the generator to be detected is connected to the input shaft of the transmission mechanism, and the universal coupling is connected to one output shaft of the transmission mechanism.
Further preferably, the transmission mechanism is any one of a transmission belt, a transmission chain, a gear box and a gear set.
It is mainly described that the partition board 211 and at least one bracket 212 are disposed in the power distribution cabinet 21, the partition board 211 and the bracket 212 are embedded in the power distribution cabinet 21, wherein the partition board 211 and the power distribution cabinet 21 are coaxially distributed, and the power distribution cabinet 21 is divided into an electric control cavity 213 and a power distribution cavity 214 from top to bottom, wherein the exciting motor 22 and the wiring terminal 26 are both located in the electric control cavity 213 and connected with the partition board 211, and the feedforward MFA controller 24, the PID controller 25, the current detection circuit 106, the voltage detection circuit 107 and the control circuit 108 are both located in the electric control cavity 213 and are respectively connected with the power distribution cabinet 21 through the bracket 212, and the partition board 211 and the bracket 212 are both in a frame structure with rectangular cross sections.
In this embodiment, the bracket 212 includes a bearing base 2121, a bearing frame 2122, a turntable mechanism 2123, guide sliding grooves 2125, telescopic adjusting columns 2126, and positioning pins 2124, wherein the bearing base 2121 has a columnar structure with rectangular cross section, the bearing bases 2121 are symmetrically distributed on two sides of a center line of the power distribution cabinet 21 and are connected with the side walls of the power distribution cabinet 21, the bearing frame 2122 has a rectangular plate-shaped frame structure with rectangular cross section and is located between the two bearing bases 2121 and hinged with the side walls of the bearing base 2121 through the turntable mechanism 2123, the plate surface of the bearing frame 2122 forms an included angle of 0-90 degrees with the axis of the power distribution cabinet 21, the side walls of the bearing frame 2122 corresponding to the turntable mechanism 2123 are provided with guide sliding grooves 2125 distributed parallel to the axis of the bearing frame 2124, the front end face and the rear end of the bearing base 2121 are respectively provided with a telescopic adjusting post 2126, the rear end of the telescopic adjusting post 2126 is hinged with the bearing base 2123 through a ratchet mechanism, the axis of the bearing base 2123 is intersected with the axis of the telescopic adjusting post 2126 and forms an included angle of 0-180 degrees, the intersection point is located below the turntable mechanism 2123 and is spaced from the turntable mechanism 2123 by 50-90% of the minimum length of the telescopic adjusting post 2126, the front end face of the telescopic adjusting post 2126 is provided with a positioning pin 2124, and when the included angle between the face of the bearing frame plate 2122 and the axis of the power distribution cabinet 21 is larger than 0 degrees, the front end face of the telescopic adjusting post 2123 is propped against the bearing frame 2122 through the positioning pin 2124.
Preferably, the telescopic adjusting post 2126 is any one of at least two stages of hydraulic telescopic posts, pneumatic telescopic posts and spring telescopic posts.
In this embodiment, the control circuit 108 is a circuit system based on an industrial computer, and the control circuit is further provided with at least one serial port communication port, at least one I/O communication port, and at least one group of wiring lines, wherein the control circuit 108 of the field detection terminal 1 is electrically connected to the rotation speed sensor 103, the output end of the auxiliary generator 105, the current detection circuit 106, the voltage detection circuit 107, the control circuit 108 of the power main detection mechanism 2, and the dispatch control circuit 3 through the wiring lines, and meanwhile, the power main detection mechanism 2 is electrically connected to the feedforward MFA controller 24, the PID controller 25, the current detection circuit 106, the voltage detection circuit 107, and the dispatch control circuit 3 of the power main detection mechanism 2 through the wiring lines.
In this embodiment, the scheduling and handling circuit 3 is a circuit system based on an industrial computer, and meanwhile, the scheduling and handling circuit is connected with at least one handling mechanism 31 through a communication gateway, and forms a scheduling service local area network with the handling mechanism 31, wherein the handling mechanism 31 is any one of the industrial computer, a PC computer, a network server and a mobile intelligent communication terminal.
The regulation and control method of the intelligent regulation and control device for the power generation system comprises the following steps:
the method comprises the steps of S1, configuring equipment, namely firstly, respectively setting a field detection terminal for each power generation operation unit according to the number and the positions of the actual power generation operation units, connecting the field detection terminal with an output shaft of a power generator of the power generation operation unit, then, setting a power main detection mechanism, a dispatching control circuit and a communication gateway at the position of a power generation operation unit control machine room, connecting each equipment, and finally, setting independent hardware identification codes and communication addresses with each field detection terminal and the power main detection mechanism by the dispatching control circuit, and completing the configuration of the equipment by an interface;
s2, monitoring the power generation state, namely after the step S1 is completed, monitoring the power generation state of the power generation operation unit during power generation operation, wherein the monitoring operation is divided into three types of direct monitoring, indirect monitoring and modulation monitoring, and the three types of monitoring are performed simultaneously, wherein:
indirect monitoring: when the detection is carried out by the field detection terminal, firstly, the auxiliary generator of the field detection terminal synchronously operates along with the generator equipment of the generator operation unit and generates electricity, and then, on one hand, the rotation speed of the auxiliary generator is detected by the rotation speed sensor, so that the operation state parameter of the generator equipment of the generator operation unit is obtained; on the other hand, the electric energy generation amount and the electric generation state of the auxiliary generator during operation are detected through a current detection circuit and a voltage detection circuit, the detection result is analyzed and calculated through a control circuit, and the operation state parameter of the auxiliary generator is calculated through the control circuit, so that the operation state data of the generating set is indirectly obtained;
direct monitoring: the connection terminal of the electric power main detection mechanism is directly and electrically connected with the electric energy output end of the electric power operation unit, then the electric energy output end of the electric power operation unit is directly and electrically connected with the PID controller, the current detection circuit and the voltage detection circuit of the electric power main detection mechanism through the connection terminal, and the generated energy and the generated state of the electric power operation unit are detected through the PID controller, the current detection circuit and the voltage detection circuit, so that the control circuit of the electric power main detection mechanism directly obtains the operation state data of the electric power operation unit;
the method comprises the steps of modulating and monitoring, wherein a connecting terminal of a power main detection mechanism is directly and electrically connected with an electric energy output end of a power generation operation unit, then the electric energy output end of the power generation operation unit is electrically connected with an exciting motor of the power main detection mechanism through the connecting terminal, the exciting motor is driven to operate and is driven by the power generation operation unit to operate, a PID controller, a current detection circuit and a voltage detection circuit are used for detecting the operating state of the exciting motor, a control circuit of the power main detection mechanism is used for indirectly obtaining the operating state data of the power generation operation unit, then the obtained data is used as a basis, a feedforward MFA controller is used for compensating the voltage and the current value of a driving circuit of the exciting motor, the operating state of the exciting motor is adjusted, and when the operating state of the adjusted exciting motor meets a set requirement, the compensation parameter of the feedforward MFA controller is obtained by the control circuit of the power main detection mechanism, and thus the theoretical operating state after the operating state data of the power generation operation unit is modulated is obtained.
And S3, power generation dispatching, namely feeding back detection data obtained by the field detection terminal and the power main detection mechanism to the dispatching control circuit, wherein the working personnel obtain three types of power generation unit power generator operation state parameters of direct monitoring, indirect monitoring and modulation monitoring according to the dispatching control circuit, and simultaneously obtain external power load energy consumption parameters through the communication gateway, distribute power generation dispatching instructions to the power generation unit power generator, enable the power generation unit power generator to perform power generation operation according to the power generation dispatching instructions, and return to the step S2 for continuous power generation state monitoring operation after the power generation dispatching instructions are completed by the power generation unit, and delay for 3-10 minutes.
Specifically, when the electric power main detection mechanism is arranged, when the exciting motor in the electric power main detection mechanism is one, each electric power main detection mechanism and one field detection terminal are adopted to form a working group to operate; when the exciting motors in the electric power main detection mechanism are multiple, each exciting motor corresponds to one field detection terminal, and each field detection terminal is correspondingly provided with two feedback detection circuits in the electric power main detection mechanism.
In this embodiment, when the field detection terminal is configured, the step S1 connects only the auxiliary generator with the power output terminal of the power generation unit when the power generation unit has no power generation device.
The key points are that when the feedforward MFA controller compensates the running state of the exciting motor, the control parameters can be sent to the feedforward MFA controller through the dispatching control circuit so as to meet the requirement of simulating the compensation of different load conditions.
Meanwhile, a voltage-regulating rectifying circuit is arranged between the exciting motor and the wiring terminal, and the feedforward MFA controller is electrically connected with the exciting motor through the voltage-regulating rectifying circuit.
In operation, wherein:
feedforward MFA controller: feedforward control is a control strategy that uses disturbance signals. If the process has a severe measurable disturbance, the feedforward controller may reduce the effect of the disturbance on the loop before the feedback loop produces a corrective action. The feedforward controller can improve the performance of the control system quite economically. Feed forward compensation can be as simple as the ratio of the two signals, or can involve complex energy and material balance calculations. The feedforward MFA controller is a generic feedforward controller. Because the feedback MFA controller has strong adaptive capacity, the design of the feedforward MFA controller is relatively simple, and only two parameters, namely feedforward gain and time constant, are needed.
Exciting motor: the exciting motor is a motor with a generating device and a three-phase synchronous generator connected. And maintaining the generator terminal voltage at a given value, and when the generator load changes, regulating the intensity of the magnetic field to constant the generator terminal voltage, so as to improve the stability of the power system, including static stability, transient stability and dynamic stability.
PID controller: the proportional-integral-derivative controller consists of a proportional unit (P), an integral unit (I) and a derivative unit (D). Three parameters are set through Kp, ki and Kd. PID controllers are mainly applicable to systems that are substantially linear and whose dynamics are not time-dependent. A PID controller is a feedback loop component common in industrial control applications. The controller compares the collected data to a reference value and then uses the difference to calculate a new input value that is intended to allow the system data to reach or remain at the reference value. Unlike other simple control operations, the PID controller can adjust the input value according to the historical data and the occurrence rate of the difference, so that the system is more accurate and more stable. It can be demonstrated mathematically that a PID feedback loop can maintain system stability in the event that other control methods result in system stability errors or process iterations.
Compared with the prior art, the invention has the following beneficial effects:
the system has flexible and convenient structure adjustment and good expansion capability, can effectively meet the requirements of multiple power generation systems for matched operation, and greatly improves the use flexibility and applicability of the system; on the other hand, in operation, the power generation equipment state can be accurately obtained, and the deviation rectifying operation in the system can be realized on the detection result, so that the purpose of detecting operation precision is improved, and meanwhile, when the operation state of the power generation system is obtained, the power generation system can be synchronously obtained to carry out synchronous replenishment modulation mechanism, so that the requirement of regulating operation of the power generation system under different power utilization load states is met, and meanwhile, the precision and timeliness of regulating operation are improved.
In addition, it should be noted that the specific examples described in this specification may be given different names, and the above description in this specification is merely illustrative of the structure of the present invention. Equivalent or simple changes of the structure, characteristics and principle of the present invention are included in the protection scope of the present invention. Various modifications or additions to the described embodiments or similar methods may be made by those skilled in the art without departing from the structure of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The intelligent regulation and control device for the power generation system is characterized by comprising a field detection terminal, an electric power main detection mechanism, a dispatching control circuit and a communication gateway, wherein the electric power main detection mechanism is electrically connected with at least one field detection terminal through a wire, the field detection terminal is electrically connected with the dispatching control circuit through a wire, in addition, the dispatching control circuit is further connected with the communication gateway through a data wire and establishes data connection with an external communication network through the communication gateway, the field detection terminal comprises a bearing frame, a universal coupling, a rotation speed sensor, a transmission shaft, an auxiliary generator, a current detection circuit, a voltage detection circuit and a control circuit, the bearing frame is of a frame structure with a rectangular axial section, the auxiliary generator is connected with the bearing frame through a damping base, the auxiliary generator is connected with one end of a transmission shaft through a universal coupling, the other end of the transmission shaft is connected with an output shaft of the generator to be detected through the universal coupling, the auxiliary generator is connected with a rotating speed sensor through the transmission shaft, a current detection circuit, a voltage detection circuit and a control circuit are embedded in a bearing frame, the current detection circuit, the voltage detection circuit and the control circuit are respectively and electrically connected with the auxiliary generator through wires, the current detection circuit and the voltage detection circuit are respectively and electrically connected with the control circuit, the power main detection mechanism comprises a power distribution cabinet, an exciting motor, a power busbar, a feedforward MFA controller, a PID controller, a current detection circuit, a voltage detection circuit, a wiring terminal and the control circuit, the exciting motor, the power busbar, the feedforward MFA controller, the PID controller, the current detection circuit, the voltage detection circuit and the control circuit are all positioned in the power distribution cabinet, wherein the wiring terminals are electrically connected with the power output terminals of the generator to be detected through wires, meanwhile, the wiring terminals are electrically connected with the power busbar, the power busbar is a plurality of and forms two parallel feedback detection circuits, each feedback detection circuit is respectively and electrically connected with the PID controller, the current detection circuit and the voltage detection circuit, and meanwhile, the input end of one feedback detection circuit is directly and electrically connected with the wiring terminal; the input end of the other feedback detection circuit is electrically connected with the exciting motor, the exciting motor is electrically connected with the wiring terminal and the feedforward MFA controller through wires respectively, the feedforward MFA controller, each PID controller, the current detection circuit and the voltage detection circuit are electrically connected with the control circuit respectively, the field detection terminal and the control circuit of the power main detection mechanism are electrically connected with the dispatching control circuit through wires respectively, and the control circuit of the field detection terminal is electrically connected with the control circuit of the power main detection mechanism.
2. The intelligent regulation and control device for a power generation system according to claim 1, wherein the transmission shaft is connected with the output shaft of the generator to be detected through a universal coupling, the universal coupling is directly connected with the output shaft of the generator to be detected and indirectly connected through a transmission mechanism, and when the transmission mechanism is indirectly connected, the output shaft of the generator to be detected is connected with the input shaft of the transmission mechanism, and the universal coupling is connected with one output shaft of the transmission mechanism.
3. The intelligent regulation and control device for a power generation system according to claim 2, wherein the transmission mechanism is any one of a transmission belt, a transmission chain, a gear box and a gear set.
4. An intelligent regulation and control device for a power generation system according to claim 1, wherein a partition board and at least one bracket are arranged in the power distribution cabinet, the partition board and the bracket are embedded in the power distribution cabinet, the partition board and the power distribution cabinet are coaxially distributed and divide the power distribution cabinet into an electric control cavity and a power distribution cavity from top to bottom, wherein the exciting motor and the wiring terminal are both positioned in the electric control cavity and connected with the partition board, the feedforward MFA controller, the PID controller, the current detection circuit, the voltage detection circuit and the control circuit are both positioned in the electric control cavity and are respectively connected with the power distribution cabinet through brackets, the partition board and the bracket are both frame structures with a cross section of rectangular, the bracket comprises a bearing base, a bearing frame, a turntable mechanism, a guide chute, a telescopic adjusting column and a locating pin, the bearing base is a columnar structure with a cross section of rectangular cross section, the bearing base is two sides symmetrically distributed on two sides of the power distribution cabinet and is connected with the side wall of the power distribution cabinet, the bearing frame is a rectangular plate-shaped frame structure positioned between the two bearing bases, the bearing base is hinged with the side wall of the bearing base, the bearing base is hinged with the turntable mechanism, the bearing base is hinged with the side wall of the power distribution cabinet, the end face of the turntable is parallel to the end face of the turntable mechanism, the end face of the adjusting column is parallel to the end face of the turntable is parallel to the end face of the adjusting column, the end of the adjusting column is parallel to the end of the adjusting column by 90 DEG, the end of the adjusting column is parallel to the end of the adjusting column, and the end of the adjusting column is parallel to the end of the adjusting column is at 90 DEG, and the end is parallel to the end of the adjusting column is arranged at the front end of the adjusting column is at 90 DEG, and has an angle between the front plane has an angle and has an angle between the adjusting column and has an angle and a plane. And when the included angle between the surface of the bearing frame and the axis of the power distribution cabinet is larger than 0 DEG, the front end surface of the telescopic adjusting column is propped against the bearing frame through the elastic cushion block.
5. The intelligent regulation and control device for a power generation system according to claim 4, wherein the telescopic adjustment column is any one of at least two stages of hydraulic telescopic columns, pneumatic telescopic columns and spring telescopic columns.
6. The intelligent regulation and control device for a power generation system according to claim 1 or 4, wherein the control circuit is a circuit system based on an industrial computer, and the control circuit is further provided with at least one serial port communication port, at least one I/O communication port and at least one group of wiring lines, wherein the control circuit of the field detection terminal is electrically connected with the rotation speed sensor, the output end of the auxiliary generator, the current detection circuit, the voltage detection circuit, the control circuit of the power main detection mechanism and the scheduling control circuit through the wiring lines, and the power main detection mechanism is electrically connected with the feedforward MFA controller, the PID controller, the current detection circuit, the voltage detection circuit and the scheduling control circuit of the power main detection mechanism through the wiring lines.
7. The intelligent regulation and control device for a power generation system according to claim 1, wherein the dispatching control circuit is a circuit system based on an industrial computer, and the dispatching control circuit is further connected with at least one control mechanism through a communication gateway and forms a dispatching service local area network with the control mechanism, wherein the control mechanism is any one of the industrial computer, a PC computer, a network server and a mobile intelligent communication terminal.
8. The control method of an intelligent control device for a power generation system according to claim 1, characterized in that the control method of the intelligent control device for a power generation system comprises the steps of:
the method comprises the steps of S1, configuring equipment, namely firstly, respectively setting a field detection terminal for each power generation operation unit according to the number and the positions of the actual power generation operation units, connecting the field detection terminal with an output shaft of a power generator of the power generation operation unit, then, setting a power main detection mechanism, a dispatching control circuit and a communication gateway at the position of a power generation operation unit control machine room, connecting each equipment, and finally, setting independent hardware identification codes and communication addresses with each field detection terminal and the power main detection mechanism by the dispatching control circuit, and completing the configuration of the equipment by an interface;
s2, monitoring the power generation state, namely after the step S1 is completed, monitoring the power generation state of the power generation operation unit during power generation operation, wherein the monitoring operation is divided into three types of direct monitoring, indirect monitoring and modulation monitoring, and the three types of monitoring are performed simultaneously, wherein:
indirect monitoring: when the detection is carried out by the field detection terminal, firstly, the auxiliary generator of the field detection terminal synchronously operates along with the generator equipment of the generator operation unit and generates electricity, and then, on one hand, the rotation speed of the auxiliary generator is detected by the rotation speed sensor, so that the operation state parameter of the generator equipment of the generator operation unit is obtained; on the other hand, the electric energy generation amount and the electric generation state of the auxiliary generator during operation are detected through a current detection circuit and a voltage detection circuit, the detection result is analyzed and calculated through a control circuit, and the operation state parameter of the auxiliary generator is calculated through the control circuit, so that the operation state data of the generating set is indirectly obtained;
direct monitoring: the connection terminal of the electric power main detection mechanism is directly and electrically connected with the electric energy output end of the electric power operation unit, then the electric energy output end of the electric power operation unit is directly and electrically connected with the PID controller, the current detection circuit and the voltage detection circuit of the electric power main detection mechanism through the connection terminal, and the generated energy and the generated state of the electric power operation unit are detected through the PID controller, the current detection circuit and the voltage detection circuit, so that the control circuit of the electric power main detection mechanism directly obtains the operation state data of the electric power operation unit;
the method comprises the steps of modulating and monitoring, wherein a wiring terminal of a power main detection mechanism is directly and electrically connected with an electric energy output end of a power generation operation unit, then the electric energy output end of the power generation operation unit is electrically connected with an exciting motor of the power main detection mechanism through the wiring terminal, the exciting motor is driven to operate and is driven by the power generation operation unit to operate, a PID controller, a current detection circuit and a voltage detection circuit are used for detecting the operating state of the exciting motor, a control circuit of the power main detection mechanism is used for indirectly obtaining the operating state data of the power generation operation unit, then the obtained data is used as a basis, a feedforward MFA controller is used for compensating the voltage and current values of a driving circuit of the exciting motor, the operating state of the exciting motor is adjusted, and when the operating state of the adjusted exciting motor meets a set requirement, the compensation parameter of the feedforward MFA controller is obtained by the control circuit of the power main detection mechanism, and thus the theoretical operating state after the operating state data of the power generation operation unit is modulated is obtained;
and S3, power generation dispatching, namely feeding back detection data obtained by the field detection terminal and the power main detection mechanism to the dispatching control circuit, wherein the working personnel obtain three types of power generation unit power generator operation state parameters of direct monitoring, indirect monitoring and modulation monitoring according to the dispatching control circuit, and simultaneously obtain external power load energy consumption parameters through the communication gateway, distribute power generation dispatching instructions to the power generation unit power generator, enable the power generation unit power generator to perform power generation operation according to the power generation dispatching instructions, and return to the step S2 for continuous power generation state monitoring operation after the power generation dispatching instructions are completed by the power generation unit, and delay for 3-10 minutes.
9. The control method of an intelligent control device for a power generation system according to claim 8, wherein when the electric power main detection mechanism is arranged, each electric power main detection mechanism and a field detection terminal are adopted to form a working group mode to operate when the exciting motor in the electric power main detection mechanism is one; when the exciting motors in the electric power main detection mechanism are multiple, each exciting motor corresponds to one field detection terminal, and each field detection terminal is correspondingly provided with two feedback detection circuits in the electric power main detection mechanism.
10. The control method of an intelligent control device for a power generation system according to claim 8, wherein in step S1, when the power generation unit has no power generation device in performing the configuration of the on-site detection terminal, only the auxiliary power generator is connected to the power output terminal of the power generation unit.
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