专利检索_ .为提供电压或电流隔离所做的改进例如用于高压或大电流网络专利检索_ .为提供电压或电流隔离所做的改进例如用于高压或大电流网络专利检索查询

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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
161	Method and apparatus for monitoring high voltage bushings safely	US14303591	2014-06-12	US09482699B2	2016-11-01	Gary R Hoffman; Edward S. Kwon; Mikhail Benis
The voltage at the test tap of a high voltage bushing is applied to a bushing coupler which includes circuitry to sense and process voltages generated at the test tap and convert the voltages into corresponding data signals. Data signals corresponding to the test tap voltages are then transmitted wirelessly to a bushing monitoring system. The wireless transmission may be, for example, via an optical coupling (e.g., fiber optics) arrangement or an electromagnetic radiation (e.g., RF transmission) arrangement. Thus, the signals from the bushing coupler are wirelessly transmitted to a monitoring system which is not conductively connected to the bushing coupler and the test tap. The bushing coupler includes a power supply which is chargeable from the test tap or wirelessly from the bushing monitoring system which is adapted to receive values of the high voltage applied to the bushing and to calculate changes in the values of selected bushing parameters.
162	CURRENT MEASUREMENT	US15099308	2016-04-14	US20160291060A1	2016-10-06	Stephen James Martin Wood; Jonathan Ephraim David Hurwitz; Seyed Amir Ali Danesh
The present invention relates to current measurement apparatus 100. The current measurement apparatus 100 comprises a measurement arrangement 110, 114 which is configured to be disposed in relation to a load 108 which draws a current signal, the measurement arrangement being operative when so disposed to measure the load drawn current signal. The current measurement apparatus 100 also comprises a signal source 112 which is operative to apply a reference input signal to the measurement arrangement 110, 114 whereby an output signal from the measurement arrangement comprises a load output signal corresponding to the load drawn current signal and a reference output signal corresponding to the reference input signal. The current measurement apparatus 100 further comprises processing apparatus 116 which is operative to receive the output signal and to make a determination in dependence on the reference output signal and the load output signal, the determination being in respect of at least one of the load drawn current signal and electrical power consumed by the load.
163	ISOLATION INTERFACE FOR AN ELECTRICITY METER AND ELECTRICITY METERING SYSTEM	US15033948	2014-11-05	US20160274150A1	2016-09-22	Michael ORDANIS
An isolation interface for isolating an electricity meter powered by a Class 2 power supply and monitoring a Class 1 power circuit from the power circuit being monitored, and an electrical metering system utilizing the interface. The interface comprises an enclosure containing at least one isolation interface circuit comprising an input for electrical connection to a sensor inductively coupled to the Class 1 power circuit, and an output for electrical connection to the electricity meter. A potential transformer having a primary electrically connected to the input and a secondary electrically connected to the output transforms a signal received from the sensor to an output signal for the electricity meter. The output is thus electrically isolated from the input, allowing the electricity meter to be manufactured as a low voltage appliance, with attendant reduction in manufacturing costs, and protecting the electricity meter against a fault voltage transmitted by the sensor to the interface.
164	VOLTAGE MEASUREMENT CIRCUIT	US14442556	2013-10-07	US20160264015A1	2016-09-15	Yasuhiro Kobayashi
A voltage measurement circuit, which can reduce a withstand voltage of each of voltage dividing resistors for voltage measurement, with respect to a surge voltage generated at the time of turning-on of a dark-current reduction relay, thereby enabling cost reduction, is provided. The voltage measurement circuit includes: a high-voltage input terminal; a plurality of voltage dividing resistors which divide a high voltage; a voltage measuring part which measures a voltage reduced to a low voltage by the plurality of voltage dividing resistors; and a dark current reduction relay which is connected in series between adjacent ones of the plurality of voltage dividing resistors.
165	Compact connection system for mains switchgear	US14351583	2012-10-17	US09413103B2	2016-08-09	Carles Pons Gonzalez
An easy-to-assemble compact connection system can be connected to a mains via connection to different switchgear devices, such as a residual-current or thermomagnetic circuit breaker, switches, contact breakers, overvoltage protectors or similar devices, in order to collect or inject signals available on the mains, such as collecting current or voltage signals from the mains or collecting or injecting other signals or parameters. The compact connection system can be connected to both switchgear devices already installed in a switchboard and to new units.
166	TESTING DEVICE POWER INDUCED BY CURRENT TRANSFORMER	US14595576	2015-01-13	US20160204617A1	2016-07-14	John M. Gilbert; Clark N. Huber
A system includes a testing device, a current clamp, and circuitry for converting an electrical current. The testing device is configured to measure a characteristic relating to electrical equipment and to transmit data representing the measured characteristic to a remote computing device. The electrical equipment includes an electrical conductor carrying an electric current. The current clamp forms a current transformer. The current clamp is configured to be clamped around the electrical conductor and the current transformer is configured to induce an electric current from the electrical conductor. The circuitry is configured to convert the induced electric current to a direct current that is usable to power the testing device.
167	Modular high voltage sensing unit	US14036752	2013-09-25	US09335348B2	2016-05-10	Robert Fong; Daniel L. Gardner; William Ayala, III
A high voltage sensing unit includes a housing having an internal bore. A resistive voltage divider, including a primary resistor and a secondary resistor configured in series, is included within the housing. A connecting assembly is configured to attach the high voltage sensing unit to a terminal of a high voltage switching device. The connecting assembly provides an electrical connection from the high voltage switching device to the primary resistor and physically supports the high voltage sensing unit. An interface cable provides an electrical connection from the secondary resistor to a receptacle on the high voltage switching device, which can receive a voltage signal and pass the voltage signal to a controller using existing control wiring.
168	An Electricity Meter and an Insulating Carrier for a Sensor Component of an Electricity Meter	US14891634	2014-05-15	US20160084886A1	2016-03-24	Andrew Dames; Robert Davidson; Edward Colby
An electricity meter comprises a conductor having a substantially planar surface; and a carrier for carrying a sensor component for enabling detection of current flowing in the conductor, wherein the carrier is spaced from the planar surface of the conductor by an arrangement of at least three spacing elements. The spacing elements may project from the carrier or from the substantially planar surface of the conductor.
169	DEVICE FOR DIFFERENTIAL ACQUISTION OF CURRENT AND METHOD OF CONTROLLING SUCH AN ACQUISITION DEVICE	US14787161	2014-04-23	US20160077132A1	2016-03-17	Nicolas GENESTE; Joel VANOLI; Francis CHAMINADAS
Device for the differential acquisition of current, comprising an acquisition circuit comprising a charge amplifier connected, at the input, to terminals for connection to a signal emitting component, and at the output, to an integrator, characterized in that a unit for injecting a charge signal is mounted between the terminals and the charge amplifier and is connected to a control unit connected to an output of the acquisition circuit, the control unit is so arranged as to control the injection of a charge signal, to detect a resultant signal at the output of the acquisition circuit and to compare the resultant signal with the injected signal.
170	HIGH-POWERED HIGH-VOLTAGE TEST DEVICE	US14945860	2015-11-19	US20160069944A1	2016-03-10	Rudolf BLANK; Stefan BALDAUF
A high-powered, high-voltage test device is provided comprising means for generating a test voltage, wherein the test voltage is an alternating voltage having an amplitude of at least 100 kV at a power of greater than 1 kW. Said means for generating the test voltage have at least two voltage amplifier branches, of which a first voltage amplifier branch contributes to generating the positive voltage half-cycles of the test voltage and a second voltage amplifier branch contributes to generating the negative voltage half-cycles of the test voltage. The high-voltage test device furthermore has a measurement circuit for measuring the test voltage to be applied to a measurement object and the test current consequently caused in the measurement object and is characterized in that each voltage amplifier branch is installed in a separate assembly having integrated active air cooling.
171	CURRENT MEASUREMENT APPARATUS, DEVICE-BEHAVIOR DETECTION SYSTEM, CURRENT MEASUREMENT METHOD, AND PROGRAM	US14781325	2014-04-16	US20160054360A1	2016-02-25	Toshiyasu HIGUMA
The current measurement apparatus measures the current flowing through a power cable that connects electrical equipment to an AC power source that supplies power to the electrical equipment. Said current measurement apparatus is provided with the following: a sensor that sandwiches the power cable and detects the common mode current flowing therein; a determiner that acquires current information indicating change in the detected common mode current; and a transmitter that transmits the acquired current information to a control apparatus that detects the operating state of the electrical equipment.
172	DEVIATION COMPENSATION METHOD OF POTENTIAL TRANSFORMER	US14693742	2015-04-22	US20150333652A1	2015-11-19	Yong Kil CHOI
A deviation compensation method of a potential transformer is provided. The deviation compensation method includes: providing first to Nth potential transformers to be installed at different locations in a high voltage direct current (HVDC) transmission system; supplying a first voltage to the first to Nth potential transformers provided; measuring voltage values output through the first to Nth transformers by the first voltage supplied; determining whether there is a deviation between the measured voltage values; and determining compensation values for correcting the measured voltage values to the same voltage value when there is the deviation.
173	Electrostatic shielding technique on high voltage resistor	US13235966	2011-09-19	US09164128B2	2015-10-20	Vasu Mogaveera
A phasing voltage meter comprises first and second probes. Each probe comprises an insulated shield supporting an electrode for contacting a high voltage electrical conductor. The shield houses a high voltage resistor connected in series with the electrode. A capacitance formed by a metallic collar across the resistor compensates for stray capacitance across the resistor. A meter comprises a housing enclosing electrode circuit for measuring phasing voltage. The electrical circuit measures voltage across the electrodes and provides an output representing phasing voltage.
174	Current meter with on board memory	US13349127	2012-01-12	US09146264B2	2015-09-29	Martin Cook
The accuracy and flexibility of a branch circuit monitor is improved by storing specifications, including error correction factors, for a plurality of current transformers in the monitor's memory and enabling current transformers with stored specifications to be selected for use with the monitor.
175	SENSORS FOR POWER DISTRIBUTION NETWORK AND ELECTRICAL GRID MONITORING SYSTEM ASSOCIATED THEREWITH	US14283476	2014-05-21	US20140350739A1	2014-11-27	Mikhail Gouzman; Serge Luryi; Satya Sharma; Peter Shkolnikov
A network of sensors is associated with a power distribution network. Sensors are positioned at each connecting line in the vicinity of each node of the power distribution network. The sensors regularly report the following measured data to the central processing unit: a geographical position of each sensor, direction of the energy flow relative to the nearest node; and value of RMS current synchronously measured over the entire network and averaged over chosen averaging period. The central processing unit includes an arrangement for receiving the measured data and using this data for constructing and updating a graph and a state of the power distribution network.
176	LEAKAGE CURRENT SENSOR FOR POST TYPE INSULATOR	US13728484	2012-12-27	US20130169286A1	2013-07-04	Andrew John Phillips; Chris Stephan Engelbecht; J. Mark Major; Robert Lynch
A sensor apparatus for detecting leakage current in a post-type insulator of an electrical power system includes: a sensor unit having a housing, the sensor unit including: a sensor assembly operable to generate an analog signal proportional to a received leakage current; an electronics module operable to covert the analog signal to a digital value; and a communications system operable to wirelessly transmit the digital value to an external receiver; a collection band adapted to be connected to an exterior surface of the insulator; and a transfer lead interconnecting the sensor assembly and the collection band, the transfer lead operable to transfer leakage current from the insulator from the collection band to the sensor assembly.
177	CURRENT SENSOR	US13722288	2012-12-20	US20130169267A1	2013-07-04	Takaaki MIYAKOSHI; Takao KASHIWAGI; Hiroyuki HIRANO; Seiji FUKUOKA
A current sensor has first and second magnetic bodies for magnetic shielding opposed to each other, and a bus bar and a Hall IC disposed between the magnetic bodies. The magnetic bodies are magnetized in directions opposite to each other when a current flows through the bus bar. The Hall IC is disposed at a position at which a magnetic field applied to the Hall IC is weakened by magnetization of the first magnetic body and by magnetization of the second magnetic body.
178	Gas insulated switchgear	US13123080	2009-10-02	US08456787B2	2013-06-04	Rei Henmi; Kyuji Yaginuma
Bus container 1 of cylindrical shape is filled with insulating gas and main circuit conductor 2 is housed with bus container 1 in taut condition. Bus container 1 has flange 3. Current transformer container 4 is installed adjacently to bus container 1. Current transformer container 4 includes inner cylinder 5 and outer sealing member 6. On the periphery of inner cylinder 5, three current transformers 11 are provided interposing insulative cushioning material 10. Other longitudinal end of inner cylinder 5 and bus container 1 are arranged so that insulation gap 9 is formed in between. Between inner cylinder 5 and outer sealing member 6 on insulation gap 9 side, varistor 15 of which resistance varies depending on a applied voltage is electrically connected through bonding conductor 16. Varistor 15 turns into a conducting state when a surge voltage over a predetermined intensity is applied.
179	GAS INSULATED SWITCHGEAR	US13123080	2009-10-02	US20110205681A1	2011-08-25	Rei Henmi; Kyuji Yaginuma
Bus container 1 of cylindrical shape is filled with insulating gas and main circuit conductor 2 is housed with bus container 1 in taut condition. Bus container 1 has flange 3. Current transformer container 4 is installed adjacently to bus container 1. Current transformer container 4 includes inner cylinder 5 and outer sealing member 6. On the periphery of inner cylinder 5, three current transformers 11 are provided interposing insulative cushioning material 10. Other longitudinal end of inner cylinder 5 and bus container 1 are arranged so that insulation gap 9 is formed in between. Between inner cylinder 5 and outer sealing member 6 on insulation gap 9 side, varistor 15 of which resistance varies depending on a applied voltage is electrically connected through bonding conductor 16. Varistor 15 turns into a conducting state when a surge voltage over a predetermined intensity is applied.
180	CONSTRUCTION SYSTEM FOR AN ELECTRICAL CURRENT AND/OR VOLTAGE SENSOR	US13123027	2009-11-11	US20110204879A1	2011-08-25	Lorenzo Peretto
A construction system for a current and/or voltage sensor (100), intended for use in combination with a busbar (B), extends along a longitudinal axis (Y), thus forming a proximal portion and a distal portion with respect to said busbar (B), and said sensor (100) comprises a solid body (110) of dielectric material intended to contain and/or incorporate electrical members, and more specifically a U-shaped conducting bar (120) extending longitudinally along its longitudinal axis (U-120) and one or more sensors (130/250/360/450/510-520/610) are placed in the proximity of said U-shaped conducting bar (120).

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