JP3091715U - Monitoring equipment for high-voltage power receiving equipment - Google Patents

Abstract

(57) [Summary] [Problem] Since the demand management and the electric safety monitoring device are different models, it is often impossible to install two on the existing distribution board at the same time. The installation space required for each unit was required, and the installation time was long, which was inconvenient for the electric management engineer. An apparatus incorporates input information, such as power, insulation, temperature, and power failure, from a low-voltage path, and uses a single device to share the internal arithmetic processing function to achieve compactness and cost reduction, thereby achieving measurement, monitoring, and monitoring.
It has a recording / control function and a built-in communication function with the outside.
It can be handled conveniently.

Description

[Detailed description of the invention]       [0001]     [Technical field to which the invention belongs]   The present invention relates to a measurement and monitoring device used in an electricity use rationalization and electrical safety monitoring system. It is about.       [0002]     [Prior art]   Conventionally, the rationalization of electricity usage has been a demand control system with the aim of reducing electricity usage fees. In addition, as an electrical safety monitoring system, insulation monitoring and The temperature of the power supply and the power capacitor, and the power failure of the electrical circuit are monitored by individual detectors. Notifying the maintenance service company via a collective alarm panel by wire or wireless .       [0003]     [Problems to be solved by the invention]   In the conventional method described above, the demand controller and the electrical security monitoring device are different models. For this reason, it is often impossible to install two units at the same time on an existing distribution panel. When attaching, it took a lot of installation space for two units and a lot of installation time.       [0004]     [Means for solving the problem]   To achieve the above tasks, power, insulation, temperature, power outage, etc. are measured with a single device. Built-in management / monitoring / recording / control functions and built-in external communication functions One unit for both functions of rationalization of electricity use and electric safety monitoring system performed by the person in charge of electricity management It is characterized in that it can be carried out by using.       [0005]     【Example】   Hereinafter, embodiments of the present invention will be described. FIG. 1 is a connection diagram when the device of the present invention is installed in a standard high-voltage power receiving facility. High From the pressure drop cable 1 through the instrument transformer 2 and the watt-hour meter 3, disconnector 4, circuit breaker 5.Three-phase transformer 7 for power via high-voltage load switch 6, AA transformer for light, power factor improvement And a high voltage.       [0006] On the low voltage side of the transformer, a three-phase NFB10 for power and a single-phase NFB11 are connected and Supplying power to loading equipment. Here, a power transformer is used for maintenance monitoring of electrical equipment. The temperature sensor 12 and the temperature sensor 13 of the light transformer To the input terminal 23 via the adapter 21. ZC for insulation monitoring T14 and T15 are attached to the class B ground wire of each transformer, and the output is It is connected to the input terminal 23 of the main unit 20 via the main unit. With the signal from the input terminal 23 The signal input to the adapter 21 is selected. Power required for demand management Power current sensor 16, lamp current sensor 17, three-phase voltage sensor 1 as force measurement 8. The information necessary for measuring the power and the power of the lamp from the lamp voltage sensor 19 And connected to the power measurement input terminal 22 of the main body 20. Set on the main unit 20 The demand is monitored and a control signal is output from the control output terminal 25. The latest CPU (Central Processing Unit) is used inside the main unit, and the two functions are Because of the circuit size, the measurement result information can be displayed on the main unit or transmitted to the outside. Communication with an external personal computer can be performed at the trust output terminal 24. In addition, communication Remote monitoring can be performed in combination with the stem.     [Effect of the invention]   Measurement, display, monitoring, recording, and control necessary for rationalization of electric use and electric safety management Now it can be done with one device, so it is possible to reduce the mounting space and the price . In addition, since all sensors can be mounted on the low pressure side, Settings, controls, and data processing are communicated externally. Greatly improves the quality of electricity management because it can be done from a distance through a computer or communication system You can now contribute.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a connection diagram when the device of the present invention is installed in a standard high-voltage power receiving facility. [Description of Signs] 1 High-voltage lead-in cable 2 Instrument transformer 3 Electricity meter 4 Disconnector 5 High-voltage circuit breaker 6 High-voltage AC load switch 7 Power 3-phase transformer 8 AA transformer for electric light 9 High-voltage leading phase Capacitor 10 NFB for 3-phase (No-fuse breaker) 11 NFB for AA (No-fuse breaker) 12, 13 Temperature detection sensor 14, 15 Zero-phase current transformer 16, 17 Current measurement sensor 18, 19 Voltage measurement clip 20 Invention monitoring device 21 Input selection adapter 22 Power measurement input terminal 23 Adapter input terminal 24 Communication output terminal 25 Control output terminal

Claims (1)

[Claim 1] A monitoring device used for high-voltage power receiving equipment integrates two functions, power management and electrical security, and collects information necessary for monitoring from a low-voltage road side, and displays, Control, record,
A portable type, or a stationary type or a general stationary type monitoring device characterized in that it is small and lightweight so that it can be easily installed in a distribution board as a single device from storage and notification.