12 results about "Line regulation" patented technology

The invention provides a voltage control strategy modeling and voltage online regulation and control method and system for a power distribution network, and is applied to the technical field of power distribution network regulation and control. The method comprises the steps that region division is carried out on the power distribution network based on the electrical distance between nodes of the power distribution network, multiple regions are obtained, and one region corresponds to one virtual power plant; determining the regional electricity price of each region based on the marginal pricing of the distribution region; taking each region as an object of energy transaction with the power transmission network, and constructing an optimization model by taking profit maximization of each region as a target on the basis of considering the safety of circuit elements in each region; performing optimization strategy modeling on the optimization model based on an observable Markov decision process to obtain an optimization strategy model; and training an optimization strategy model based on the regional electricity price of each region and a maximum entropy reinforcement learning algorithm. The method solves the problem that the complexity of the power distribution network affects the optimality and efficiency of the collaborative optimization problem of a plurality of virtual power plants in the power distribution network.

The invention belongs to the field of control of residual stress of hot rolled strips, and discloses an online regulation and control system and method for residual stress distribution in the strip production process, and the system comprises a residual stress monitoring system, a control unit and a host part; the residual stress monitoring system is used for carrying out residual stress distribution online regulation and control on the plate strip based on an analytical solution of residual stress and compensation stress of sand blasting; the control unit is a core component of the regulation and control system and is used for receiving and processing a signal and sending an instruction; the main machine part comprises an air pressure rod, a sand blaster and a high-pressure water spraying calandria, wherein the air pressure rod is used for finely adjusting the operation angle of the sand blaster; the method is mainly applied to the period after finish rolling and before coiling in the hot rolling process; the method has the advantages that the non-uniform residual stress of the plate strip is regulated and controlled on line by adopting a sand blasting process, and the sand blasting flow, the operation time and the sand blasting pressure change along with different stress values in an operation interval during the period; continuous production is achieved while accurate regulation and control are achieved, and the plate shape quality is guaranteed.

A method of controlling a luminaire system includes: collecting the signal states of a red-line original control signal, a green-line original control signal and a blue-line original control signal periodically; outputting a red-line conversion signal, a green-line conversion signal, and a blue-line conversion signal sequentially in a single output cycle; regulating the voltages of the red-line conversion signal, the green-line conversion signal and the blue-line conversion signal sequentially to obtain a red-line regulation signal, a green-line regulation signal and a blue-line regulation signal; outputting a misplaced signal consisting information of the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal; receiving and detecting the misplaced signal to obtain the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal; and outputting the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal with different levels to control different lamps.

The present invention provides a current detection circuit, which includes an inductor current detection circuit and a processing circuit. The inductor current detection circuit detects the inductor current of a direct current to direct current (DC‑DC) converter to generate a first detection current signal, wherein the average value of the first detection current signal is not constant under different input voltages of the DC‑DC converter. The processing circuit generates a second detection current signal, wherein the first detection current signal participates in the generation of the second detection current signal, the second detection current signal participates in the current mode control of the DC‑DC converter, and the average value of the second detection current signal is constant under different input voltages of the DC‑DC converter. Accordingly, the present invention also provides a current mode control circuit for a DC‑DC converter. The solution provided by the present invention can take into account both low compensation hardware cost and good line regulation / transient performance.

The invention provides a distributed power supply-oriented collaborative consumption regulation and control system and method, and belongs to the technical field of power grid consumption regulation and control. The system comprises an equipment regulation and control terminal which is used for being installed in a power distribution area and is used for adjusting the equipment operation state of the power distribution area in real time and collecting the equipment operation data of the power distribution area; the transformer area regulation and control terminal is in communication connection with the equipment regulation and control terminal, and the transformer area regulation and control terminal is used for receiving the equipment operation data transmitted by the equipment regulation and control terminal, calculating real-time operation data of the power distribution transformer area according to the equipment operation data and predicting future operation data of the power distribution transformer area; and the line regulation and control terminal is in communication connection with the transformer area regulation and control terminals of the plurality of power distribution transformer areas of the same line. Through the three-level architecture of the equipment regulation and control terminal, the transformer area regulation and control terminal and the line regulation and control terminal, the absorption regulation and control effect can be effectively improved.

The present invention relates to a multi-mode on-line regulation method for a switched reluctance motor power converter, which can switch and control the switched reluctance motor to operate in a three-phase four-leg drive mode, a three-phase full-bridge drive mode, and a Miller converter drive mode; among them, the three-phase four-leg drive mode and the three-phase full-bridge drive mode can achieve bipolar control of the switched reluctance motor, while the Miller converter can meet the requirements of unipolar control of the switched reluctance motor. Therefore, through this control strategy, multi-mode drive of unipolar drive and bipolar control of the switched reluctance motor can be realized. At the same time, since the three-phase four-leg consists of four independent legs, the topological structure is simple, commercial modular integration can be achieved, the system volume cost can be effectively reduced, the reliability of the power system can be enhanced, and it has important application prospects in electric vehicle drive systems, aerospace, home appliance motor drives, electric tool motors, and mine motor drives.

The invention discloses a rolling line regulation and control method and system, and belongs to the technical field of metallurgy control. Comprising the steps of obtaining historical rolling correction data in response to a control instruction in a normal rolling state; based on historical rolling correction data, a final speed set value is determined through self-adaptive correction processing, and the self-adaptive correction processing comprises weighted filtering, confidence coefficient judgment and temperature-combined steel grade compensation; based on the final speed set value, rolling control is executed, real-time correction signals and state feedback data are determined, and rolling control comprises reverse cascade speed adjustment, steel biting impact compensation and loop control; and according to the real-time correction signal and the state feedback data, an elongation correction value is determined and used for updating historical rolling correction data when the confidence coefficient condition is met. According to the method, self-adaptive precise adjustment of rolling speed setting can be achieved, the situation that abnormal working conditions interfere with data updating is effectively avoided, and therefore the rolling line operation stability and the product size precision are improved.

A method of controlling a luminaire system includes: collecting the signal states of a red-line original control signal, a green-line original control signal and a blue-line original control signal periodically; outputting a red-line conversion signal, a green-line conversion signal, and a blue-line conversion signal sequentially in a single output cycle; regulating the voltages of the red-line conversion signal, the green-line conversion signal and the blue-line conversion signal sequentially to obtain a red-line regulation signal, a green-line regulation signal and a blue-line regulation signal; outputting a misplaced signal consisting information of the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal; receiving and detecting the misplaced signal to obtain the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal; and outputting the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal with different levels to control different lamps.

The present invention discloses a switching conversion system with multi-mode constant current control, which is characterized in that it includes a bandgap reference circuit unit, a resistance measurement circuit unit, a switch drive circuit, an over-temperature protection circuit unit, a switch delay compensation circuit, a constant current error amplification circuit, a constant current operation circuit, a zero-crossing detection circuit, a current sampling comparison circuit and an ARM main control unit; the bandgap reference circuit unit includes a start-up circuit, a bandgap reference core circuit and an under-voltage latch circuit; the present invention realizes a stable current output of 1.5 A for the primary-side feedback constant current drive circuit without an auxiliary winding under an input voltage of 85-220 Vac and a maximum load of 12 V. The linear regulation rate of the circuit is lower than ±2%, the load regulation rate is lower than ±1.5%, and the conversion efficiency in different working environments is higher than 85%. By detecting the magnitude of the secondary current and adjusting the drive voltage V DRI according to the detected secondary current, a fast turn-off synchronous rectification drive circuit in multiple modes is realized.

The invention discloses a novel high-precision low-dropout linear voltage regulator, and belongs to the technical field of analog integrated circuits, the novel high-precision low-dropout linear voltage regulator comprises an amplification stage, an output stage, a power stage, a pre-regulator and a frequency compensation technology, the amplification stage, the output stage and the power stage provide high open-loop gain, and the linear regulation rate and the load regulation rate are effectively improved; the pre-voltage stabilizer prevents power supply voltage ripples or noise from being transmitted to output voltage, so that the power supply rejection ratio is increased; the frequency compensation technology can ensure the stability of the amplifier to different capacitive loads under high open-loop gain. The high-precision reference driver has the advantage of high precision and is suitable for high-precision reference drivers.

The invention belongs to the technical field of ammeter mounting structures, and particularly relates to a connector structure for ammeter replacement. Comprising a supporting frame which is composed of side supporting frame plates and an end supporting frame plate connected between the ends of the two side supporting frame plates, and further comprises an upper mounting frame plate and a lower mounting frame plate which are connected between the two side supporting frame plates in a sliding mode, and a transverse upper guide rail is arranged on the bottom face of the upper mounting frame plate; a transverse lower guide rail is arranged on the top surface of the lower mounting frame plate; the ammeter is provided with an upper guide wheel assembly and a lower guide wheel assembly, the upper guide wheel assembly is hung on the transverse upper guide rail, and the lower guide wheel assembly is hung on the transverse lower guide rail. The upper guide wheel assembly is connected with a limiting locking assembly, and the limiting locking assembly is used for fixing the position of the electric meter. According to the invention, position adjustability and line regularity of electric meters during centralized installation can be realized, and meanwhile, disassembly and movement are facilitated, so that the management efficiency and the use flexibility of an electric meter group are greatly improved.

The invention relates to the technical field of electrical regulation and control, in particular to an electrical joint online regulation and control system which comprises a state monitoring unit, the state monitoring unit is used for monitoring the state of target electrical equipment so as to obtain state data of the target electrical equipment, and the state data comprises a current signal and a voltage signal; performing standardization processing on the state data to obtain standardized data corresponding to the state data; the state classification unit is used for carrying out state clustering on the standardized data to obtain a state label of the target electrical equipment, and the state label comprises an idle working state, a low-intensity working state and a high-intensity working state. By monitoring the current signal and the voltage signal in real time, the state data of the electrical equipment can be accurately obtained, and the running state of the equipment can be reflected in real time.