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4228results about "Circuit interrupters testing" patented technology

Testing and verifying system appropriate for intelligent transformer substation and verifying method

ActiveCN102608450ADigital real-time simulation with high precisionHigh precisionCircuit interrupters testingSmart substationTransformer
The invention discloses a testing and verifying system appropriate for an intelligent transformer substation and a verifying method. The system comprises an upper computer and an embedded system lower computer that comprises a collecting plate, a signal plate, a data plate and four sub-plates of a synchronization plate. The signal plate, the data plate and the synchronization plate are supplied with power by an external adapter DC5V. The synchronization plate provides synchronization pulse signals to other sub-plates. Ethernet of the upper computer is connected with the signal plate of the upper computer, the intelligent transformer substation, and a process layer, an interval layer and a station layer network of a digital transformer substation by an RJ45 twisted-pair through an industrial switchboard. The testing and verifying system appropriate for the intelligent transformer substation is convenient to detect and verify the electrical capacity of current intelligent transformer substation and digital transformer substation and improves the debugging speed of the intelligent transformer substation and digital transformer substation greatly so as to provide good technical assurance to construction of the intelligent transformer substation and digital transformer substation and lay a solid foundation for safe and stable operation of the intelligent transformer substation and digital transformer substation.
Owner:江苏凌创电气自动化股份有限公司

Testing device and testing method of flexible direct-current transmission modular multilevel converter (MMC) converter valve operating

The invention discloses a testing device and a testing method of flexible direct-current transmission modular multilevel converter (MMC) converter valve operating. Large current needing to be checked is produced through energy exchange between two groups of valve module submodule capacitors and a load electric reactor, accurate alternating current-direct current overlaying current stress can be obtained through respective adjustment of alternating component amplitude and phase difference of output voltage of two valve modules, and adjusting modes are simple and flexible. A charging source is only used for building working voltage of two sample valve submodules at the beginning of the test, energy supplementation power sources are used for building working voltage of two auxiliary valves at the beginning of the test, only less active loss is supplemented in the test process later, the two energy supplementation power sources respectively share one half of system loss, and requirements for power capacity of a test circuit are greatly lowered. In addition, the two energy supplementation power sources can offset harmonic waves of grid-connected current of the two energy supplementation power sources through difference of connection modes of transformers of the two energy supplementation power sources to a great degree, and harmonic wave pollution to power grids is reduced.
Owner:XJ ELECTRIC +1

Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault

The invention discloses a diagnostic circuit and a diagnostic method for detecting electric vehicle high-voltage relay fault. The circuit comprises a battery pack for providing power and a driving force for the electric vehicle and a controller for controlling on and off of an electric vehicle switch element. Two ends of the battery pack are connected with an overall electrical device; a main positive relay K+ is serially connected between the positive electrode of the battery pack and the overall electrical device; two ends of the main positive relay K+ are parallelly connected with a relay R and a pre-charging relay Kp; a main negative relay K- is serially connected between the negative electrode of the battery pack and the overall electrical device; both the battery pack and the overall electrical device are respectively connected with the controller; the controller is used for detecting voltage at two ends of the battery pack, voltage at two ends of the overall electrical device, and voltage at the negative end of the battery pack and the positive end of the overall electrical device. Thus, no peripheral circuit needs to be added, the state of the relay is judged only through carrying out cross detection on voltage at the relay end, whether the relay has a fault can be timely detected, remedial measures can be taken timely, the method is simple, convenient and feasible, and no detection risk is added.
Owner:江苏博沃汽车电子系统有限公司

Automatic testing system and method for relay protection measuring and controlling device

ActiveCN103412558AWith precision correction functionFlexible Configuration ConfigurationElectric testing/monitoringCircuit interrupters testingCommunication interfaceClosed loop
The invention discloses an automatic testing system and method for a relay protection measuring and controlling device. The system and the method can automatically test the flexible configuration of a use case, and can synchronously modify the fixed value of a to-be-tested device in the testing process according to the configuration of the test use case. If the to-be-tested device is in a measured and controlled state, a relay protection monitoring and controlling device tester is used for adding amount; device information is backward read through a communication interface of the to-be-tested device and is compared with that at amount adding time; a complete close loop test is conducted on the to-be-tested monitoring and controlling device. Parameters and configuration information information are sent to the relay protection monitoring and controlling device tester through an upper computer. The communication amount and the switch amount of the to-be-tested device are increased. Communication messages are uploaded to the upper computer. A series of closed loop tests are conducted. A testing report is automatically generated. The system and method have a testing precision rectifying section, improve testing precision, are wide in application range, and have good application prospects.
Owner:NARI TECH CO LTD +1

Systems and Methods for Measuring Electrical Power Usage in a Structure and Systems and Methods of Calibrating the Same

Some embodiments can concern a method of using a power consumption measurement device. The power consumption measurement device can be mechanically coupled to a surface of a circuit breaker box overlying at least part of one or more main electrical supply conductors for an electrical power infrastructure of a structure. The method can include: determining one or more first magnetic field readings from the one or more main electrical supply conductors using one or more sensors in the power consumption measurement device; after determining the one or more first magnetic field readings, electrically coupling a first calibration load to the electrical power infrastructure; while the first calibration load remains electrically coupled to the electrical power infrastructure, determining one or more second magnetic field readings from the one or more main electrical supply conductors using the one or more sensors in the power consumption measurement device; calibrating the power consumption measurement device using at least in part the one or more first magnetic field readings and the one or more second magnetic field readings, after calibrating the power consumption measurement device, determining one or more third magnetic field readings from the one or more main electrical supply conductors using the one or more sensors in the power consumption measurement device; and determining an electrical power used by the electrical power infrastructure of the structure using at least the one or more third magnetic field readings and the one or more calibration coefficients. Calibrating the power consumption measurement device can include determining one or more first calibration coefficients for the power consumption measurement device using at least in part the one or more first magnetic field readings and the one or more second magnetic field readings. Other embodiments are disclosed.
Owner:BELKIN INT
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