Utility model content
Technical assignment of the present utility model is for above deficiency, provides remote power-feeding power source generator, solves the problem that fault in remote power system is difficult to confirmation and fault location difficulty.
Technical assignment of the present utility model realizes in the following manner,
Remote power-feeding power source generator, comprises input, output, lightning protection device, isolating transformer, T connects transformer, variable capacitor array, fixed capacitor, self coupling step-up transformer, EMI filtering lightning protection device, sample circuit, controller, power carrier modulation-demodulation circuit, Failure Detection Controller; Sample circuit comprises voltage sampling circuit I, voltage sampling circuit II and current sampling circuit;
Input, lightning protection device, isolating transformer, T connect transformer, fixed capacitor, self coupling step-up transformer, EMI filtering lightning protection device, output are connected successively; Variable capacitor array in parallel connects the secondary side of transformer in T; Controller controls variable capacitor array and self coupling step-up transformer by control signal; Voltage sampling circuit I is connected to the secondary side of isolating transformer and T connects between the primary side of transformer, and voltage sampling circuit I connection control device; The equal connection control device in one end of voltage sampling circuit II and current sampling circuit, the other end is connected to output; Failure Detection Controller to be communicated with power carrier modulation-demodulation circuit by bus and controls; Power carrier modulation-demodulation circuit one end connects Failure Detection Controller, and the other end is connected to output.
Remote power-feeding power source generator, AC power is connected to the input of remote power-feeding power source generator, and the output of remote power-feeding power source generator is connected to load by power supply changeover device;
Lightning protection device: for tackling the thunderbolt interference under open-air conditions;
Isolating transformer: for making remote power-feeding power source generator and external electrical network electrical isolation;
T connects transformer: for the three-phase alternating voltage of input is become single-phase AC voltage;
Variable capacitor array: for changing capacitance size, when the three-phase alternating current generation phase shift inputted or phase shortage, adjustment exports phase place;
Fixed capacitor: for filtering high frequency spurs;
Self coupling step-up transformer: regulate for carrying out boosting to input voltage by different no-load voltage ratio according to loading condition;
EMI filtering lightning protection device: for carrying out EMI filtering and lightning protection function to output;
Sample circuit: for sampling to input and output voltage or electric current, complete FEEDBACK CONTROL, comprises voltage sampling circuit I, voltage sampling circuit II and current sampling circuit;
Controller: the sampled value according to sample circuit controls variable capacitor array and self coupling step-up transformer;
Power carrier modulation-demodulation circuit: for being communicated with remote power-feeding power source generator by power line carrier;
Failure Detection Controller: the failure condition according to power carrier modulation-demodulation circuit feedback controls remote power-feeding power source generator, disengagement failure circuit.
Remote power-feeding power source generator, self coupling step-up transformer is single-phase self-coupling step-up transformer.
Remote power-feeding power source generator, controller is MCU or DSP.
Remote power-feeding power source generator, variable capacitor array comprises the multiple different array capacitor be connected in parallel, each array is equipped with a controllable silicon, and this controllable silicon is controlled by the control signal of described controller, and controllable silicon is for being incorporated to or disconnecting the capacitor array at place.
Remote power-feeding power source generator, self coupling step-up transformer comprises the input and output with multiple tap, and each tap is equipped with a controllable silicon, and this controllable silicon is controlled by the control signal of described controller, access for input voltage adjusts, and controllable silicon is used for opening or disconnect place tap.
Remote power-feeding power source generator of the present utility model has the following advantages:
(1), remote power-feeding power source generator without high frequency switching device, equipment dependability is high;
(2), remote power-feeding power source generator has the control of voltage-phase inner ring, by the accurate control phase of variable capacitor array; Controller control strategy generates control signal, reach the Linear Control to variable capacitor array, transformer is connect in conjunction with T, single-phase voltage-phase and the power supply output quality of transformer can be connect by accurate control T, for subsequent conditioning circuit provides good input signal basis when AC power generation phase shift or phase shortage;
(3), remote power-feeding power source generator has power outer shroud and controls, and according to load variations adjustment equipment power output, promotes utilization rate of electrical; Controller controls self coupling step-up transformer by control signal and adjusts power output and idle content, guarantees accurate voltage stabilizing and the power quality of output voltage;
(4), load stabilization time, system works is at linear condition, and stability is high;
(5), load changing time, equipment power output slowly promotes, and effectively reduces load to the impact of remote power-feeding power source generator, the stability of further raising system;
(6) remote power-feeding power source generator has voltage inter-loop control, by accurately controlling output voltage by self coupling step-up transformer.
Embodiment
With reference to Figure of description and specific embodiment, remote power-feeding power source generator of the present utility model is described in detail below.
Embodiment 1:
Remote power-feeding power source generator of the present utility model, its structure comprises input, output, lightning protection device, isolating transformer, T connect transformer, variable capacitor array, fixed capacitor, self coupling step-up transformer, EMI filtering lightning protection device, sample circuit, controller, power carrier modulation-demodulation circuit, Failure Detection Controller; Sample circuit comprises voltage sampling circuit I, voltage sampling circuit II and current sampling circuit;
Input, lightning protection device, isolating transformer, T connect transformer, fixed capacitor, self coupling step-up transformer, EMI filtering lightning protection device, output are connected successively; Variable capacitor array in parallel connects the secondary side of transformer in T; Controller controls variable capacitor array and self coupling step-up transformer by control signal; Voltage sampling circuit I is connected to the secondary side of isolating transformer and T connects between the primary side of transformer, and voltage sampling circuit I connection control device; The equal connection control device in one end of voltage sampling circuit II and current sampling circuit, the other end is connected to output; Failure Detection Controller to be communicated with power carrier modulation-demodulation circuit by bus and controls; Power carrier modulation-demodulation circuit one end connects Failure Detection Controller, and the other end is connected to output.
AC power is connected to the input of remote power-feeding power source generator, and the output of remote power-feeding power source generator is connected to load by power supply changeover device;
Lightning protection device: for tackling the thunderbolt interference under open-air conditions;
Isolating transformer: for making remote power-feeding power source generator and external electrical network electrical isolation;
T connects transformer: for the three-phase alternating voltage of input is become single-phase AC voltage;
Variable capacitor array: for changing capacitance size, when the three-phase alternating current generation phase shift inputted or phase shortage, adjustment exports phase place;
Fixed capacitor: for filtering high frequency spurs;
Self coupling step-up transformer: regulate for carrying out boosting to input voltage by different no-load voltage ratio according to loading condition;
EMI filtering lightning protection device: for carrying out EMI filtering and lightning protection function to output;
Sample circuit: for sampling to input and output voltage or electric current, complete FEEDBACK CONTROL, comprises voltage sampling circuit I, voltage sampling circuit II and current sampling circuit;
Controller: the sampled value according to sample circuit controls variable capacitor array and self coupling step-up transformer;
Power carrier modulation-demodulation circuit: for being communicated with remote power-feeding power source generator by power line carrier;
Failure Detection Controller: the failure condition according to power carrier modulation-demodulation circuit feedback controls remote power-feeding power source generator, disengagement failure circuit.
Controller is MCU.
Controller realizes following function: A, realize the translation function of analog quantity to digital quantity; B, real-time tracking three-phase input voltage value, calculate tracking error value, exporting control signal, for adjusting the capacitance of variable capacitor array, realizing the accurate control of voltage-phase; C, real-time tracking output voltage and current value, thus calculate power output, and contrast the idle content of current system, exporting control signal, for controlling self coupling step-up transformer, realizing the adjustment of output voltage and apparent power, improve utilization rate of electrical.
Embodiment 2:
Remote power-feeding power source generator of the present utility model, comprises input, output, lightning protection device, isolating transformer, T connects transformer, variable capacitor array, fixed capacitor, self coupling step-up transformer, EMI filtering lightning protection device, sample circuit, controller, power carrier modulation-demodulation circuit, Failure Detection Controller; Sample circuit comprises voltage sampling circuit I, voltage sampling circuit II and current sampling circuit;
Input, lightning protection device, isolating transformer, T connect transformer, fixed capacitor, self coupling step-up transformer, EMI filtering lightning protection device, output are connected successively; Variable capacitor array in parallel connects the secondary side of transformer in T; Controller controls variable capacitor array and self coupling step-up transformer by control signal; Voltage sampling circuit I is connected to the secondary side of isolating transformer and T connects between the primary side of transformer, and voltage sampling circuit I connection control device; The equal connection control device in one end of voltage sampling circuit II and current sampling circuit, the other end is connected to output; Failure Detection Controller to be communicated with power carrier modulation-demodulation circuit by bus and controls; Power carrier modulation-demodulation circuit one end connects Failure Detection Controller, and the other end is connected to output.
AC power is connected to the input of remote power-feeding power source generator, and the output of remote power-feeding power source generator is connected to load by power supply changeover device;
Lightning protection device: for tackling the thunderbolt interference under open-air conditions;
Isolating transformer: for making remote power-feeding power source generator and external electrical network electrical isolation;
T connects transformer: for the three-phase alternating voltage of input is become single-phase AC voltage;
Variable capacitor array: for changing capacitance size, when the three-phase alternating current generation phase shift inputted or phase shortage, adjustment exports phase place;
Fixed capacitor: for filtering high frequency spurs;
Self coupling step-up transformer: regulate for carrying out boosting to input voltage by different no-load voltage ratio according to loading condition;
EMI filtering lightning protection device: for carrying out EMI filtering and lightning protection function to output;
Sample circuit: for sampling to input and output voltage or electric current, complete FEEDBACK CONTROL, comprises voltage sampling circuit I, voltage sampling circuit II and current sampling circuit;
Controller: the sampled value according to sample circuit controls variable capacitor array and self coupling step-up transformer;
Power carrier modulation-demodulation circuit: for being communicated with remote power-feeding power source generator by power line carrier;
Failure Detection Controller: the failure condition according to power carrier modulation-demodulation circuit feedback controls remote power-feeding power source generator, disengagement failure circuit.
Self coupling step-up transformer is single-phase self-coupling step-up transformer.
Controller is DSP.
Variable capacitor array comprises the multiple different array capacitor be connected in parallel, and each array is equipped with a controllable silicon, and this controllable silicon is controlled by the control signal of described controller, and controllable silicon is for being incorporated to or disconnecting the capacitor array at place.
Self coupling step-up transformer comprises the input and output with multiple tap, and each tap is equipped with a controllable silicon, and this controllable silicon is controlled by the control signal of described controller, and the access for input voltage adjusts, and controllable silicon is used for opening or disconnect place tap.
By remote power-feeding power source generator of the present utility model, be applied in remote power-feeding, the method for its fault location comprises the steps:
(1), by AC power be connected to the input of remote power-feeding power source generator, the output of remote power-feeding power source generator is connected to load by power supply changeover device;
(2), AC power is connect transformer, fixed capacitor, self coupling step-up transformer, EMI filtering lightning protection device, output by input, lightning protection device, isolating transformer, T, then is exported to load supplying by power supply changeover device;
(3), power line carrier, PLC is passed through between power carrier modulation-demodulation circuit and power supply changeover device, the operating state of power carrier modulation-demodulation circuit real-time collecting power supply changeover device, signal is communicated with Failure Detection Controller by bus, is judged by the line fault of Failure Detection Controller to load;
When Failure Detection Controller confirms the line fault that load occurs, localizing faults load, control strategy is issued power carrier modulation-demodulation circuit by bus by Failure Detection Controller, and power carrier modulation-demodulation circuit controls by power carrier the circuit that power supply changeover device corresponding to load fault cuts off this load;
(4), voltage sampling circuit II and current sampling circuit collection know that the bearing power of output changes, Information Monitoring is passed to controller by voltage sampling circuit II and current sampling circuit, controller sends control strategy and control signal is transferred to self coupling step-up transformer, self coupling step-up transformer adjustment power output and idle content, guarantee accurate voltage stabilizing and the power quality of output voltage;
(5), voltage sampling circuit I detects the three-phase input voltage of AC power, if there is AC power phase shift or phase shortage, then voltage sampling circuit I gathers and the information of collection is issued controller, controller sends control strategy and control signal is transferred to variable capacitor array, variable capacitor array changing capacitance, guarantees that the secondary side that T connects transformer exports as stable voltage signal.
The method of remote power-feeding fault location, load is 4 loads in parallel, and each load is connected to the output of remote power-feeding power source generator by respective power supply changeover device.
The method of remote power-feeding fault location, in step (3), the line fault of load comprises short trouble or open circuit fault.
The method of remote power-feeding fault location, AC power is that 380VAC three-phase voltage is inputted by input; The thunderbolt interference under secondary degree of protection reply open-air conditions is adopted by lightning protection device; By isolating transformer and external electrical network electrical isolation; T connects transformer and 380V three-phase alternating voltage is become 220V single-phase AC voltage; Fixed capacitor has compensate function, filtering high frequency spurs; Self coupling step-up transformer carries out boosting to input voltage by different no-load voltage ratio according to loading condition and regulates; EMI filtering lightning protection device carries out EMI filtering and lightning protection function to output; Output exports the single-phase AC voltage of 800 ~ 1600VAC; The AC constant voltage source that the single-phase AC voltage of 800 ~ 1600VAC is converted to 220V is powered to load by power supply changeover device.
By embodiment above, described those skilled in the art can be easy to realize the utility model.But should be appreciated that the utility model is not limited to above-mentioned embodiment.On the basis of disclosed execution mode, described those skilled in the art can the different technical characteristic of combination in any, thus realizes different technical schemes.
Except the technical characteristic described in specification, be the known technology of those skilled in the art.