CN203299284U - Phase detecting device for 10kv switch cabinet - Google Patents

Abstract

The utility model discloses a 10kV switch cabinet phase nuclear device, which includes a signal acquisition module, a signal amplification module, an analysis module, an A/D converter, a display and a buzzer; the signal acquisition module is externally connected with a pair of XY test pens and A grounding wire, the XY test pen is connected to the two phase-checked ports respectively, and the current signal collected is transmitted to the signal acquisition module; the signal amplification module transmits the current signal transmitted by the signal acquisition module After the signal is amplified, it is sent to the analysis module; the analysis module obtains the phase angle difference from the comparison of the received current signals, and can send this value to the A/D converter; the A/D converter It can convert the received phase angle difference into a digital signal, and transmit this digital signal to the display and buzzer at the same time. The 10kV switchgear phase nuclear device has a wide range of applications, and the results can be known from the display screen, with sound prompts, safe and simple operation.

Description

10kV switch cabinet phase nuclear device

technical field

The utility model relates to a phase nuclear device in an electric power system, in particular to a phase nuclear device for a switch cabinet.

Background technique

In daily power distribution maintenance, faults, line switching, and reverse operations, it is often necessary to perform phasing work on cable lines. However, there are many types and types of high-voltage switchgear used in the current distribution network, and different types need to be used. However, when the specifications of the equipment collectors are not uniform, it is easy to make the secondary signal sent by it not match the collection signal range of the phasor, resulting in failure of normal orientation.

Contents of the invention

In order to solve the above-mentioned technical problems, the utility model provides a 10kV switch cabinet phase verification device, which is suitable for the verification phase of various 10kV switch cabinets. It has a wide range of applications and can display the measured phase angle in real time. The result can be known from the display screen. And there are sound prompts, the operation is safe and simple.

For this reason, the technical scheme of the utility model is as follows:

A 10kV switch cabinet phase nuclear device, including a signal acquisition module, a signal amplification module, an analysis module, an A/D converter, a display and a buzzer; a pair of XY test pens and a grounding wire are externally connected to the signal acquisition module, The test pens are respectively connected to two phase-checked ports on the high-voltage live display device arranged on the 10kV switch cabinet, and the current signal is transmitted to the signal acquisition module;

The signal acquisition module transmits the current signals collected by the XY test pens to the signal amplification module;

The signal amplification module amplifies the current signal collected by the signal acquisition module and transmits it to the analysis module;

The analysis module obtains the phase angle difference from the received current signal comparison, and transmits the phase angle difference to the A/D converter;

The A/D converter converts the phase angle difference transmitted by the analysis module into a digital signal, and can transmit this digital signal to a display and a buzzer;

The display shows the phase angle difference after receiving the digital signal transmitted by the A/D converter;

The buzzer emits a buzzing sound after receiving the digital signal transmitted by the A/D converter.

The analysis module also judges whether it is in-phase or out-of-phase according to the obtained phase angle difference, and transmits the result of in-phase or out-of-phase to the A/D converter; correspondingly, the A/D converter sends the analysis module The transmitted in-phase or out-of-phase results are converted into digital signals, and the digital signals are transmitted to the display and buzzer; the display displays the in-phase or out-of-phase results after receiving the digital signals transmitted by the A/D converter.

The buzzer emits one sound when it receives a signal with the same phase, and emits another sound when it receives a signal with a different phase. In this way, the nuclear phase result can be visually judged from the sound, which is convenient for operation and improves work efficiency.

The display screen is a liquid crystal display screen with a backlight and is not affected by ambient light.

The 10kV switchgear phase detector has a wide range of applications, is safe and reliable, and can be tested on the low-voltage side to determine the relationship between the phase, phase sequence, and wiring group of the high-voltage side; it is easy to operate and does not need other safety facilities; the result can be known from the display , with voice prompts, safe and convenient operation; direct display of phase angle difference, convenient for the next step of operation.

Description of drawings

Fig. 1 is a structural diagram of a 10kV switch cabinet phase nuclear device of the present invention.

Detailed ways

The structure of the 10kV switch cabinet phase nuclear device of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

A 10kV switch cabinet phase nuclear device, including a signal acquisition module, a signal amplification module, an analysis module, an A/D converter, a display and a buzzer. The signal acquisition module is externally connected with a pair of XY test pens and a ground wire, and the test pens are respectively connected to the two phase-checked ports on the high-voltage live display device installed on the 10kV switch cabinet, and the current signals are transmitted to the The above signal acquisition module. The signal acquisition module transmits the current signals respectively collected by the XY test pens to the signal amplification module; The signal amplification module amplifies the current signal collected by the signal collection module and transmits it to the analysis module; The analysis module draws the phase angle difference from the received current signal comparison, and transmits the phase angle difference to the A/D converter; the A/D converter transmits the phase angle difference transmitted by the analysis module Convert it into a digital signal, and transmit this digital signal to the display and buzzer. The monitor displays the phase angle difference after receiving the digital signal from the A/D converter, and the buzzer buzzes after receiving the digital signal from the A/D converter.

Example 2

The difference from the 10kV switch cabinet phase nuclear device in Embodiment 1 is that the analysis module can also judge whether it is in phase or out of phase according to the obtained phase angle difference, and transmits the result of in phase or out of phase to the A/D converter; the A/D converter converts the in-phase or out-of-phase results transmitted by the analysis module into digital signals, and transmits this digital signal to the display and buzzer; the display receives the A/D converter and transmits After receiving the digital signal, the result of in-phase or out-of-phase is displayed; the buzzer emits one sound when it receives an in-phase signal, and another sound when it receives an out-of-phase signal.

The usage method of the 10kV switch cabinet nuclear phase device of the present utility model is as follows:

1) Wiring: connect the XY test pen and the ground wire according to the structure of the 10kV switch cabinet phase detector of the utility model;

2) Self-inspection: At the electrical inspection jack of the high-voltage live display device of the switch cabinet, use the XY test pen to test the electrical inspection jacks of the same phase or different phases, and perform self-inspection;

3) Phase verification: at the electroscope jacks of the high-voltage live display devices of two different power switch cabinets, use the X test pen to test the electroscope jacks of the first group of cabinets; use the Y test pen to spot test the electroscope sockets of the second group of cabinets holes; detect the phase relationship between the two groups of power cabinets, the specific statements are as follows:

①Set the phases of the first group of power cabinets as A, B, and C, and set the phases of the second group of power cabinets as A’, B’, and C’;

② When conducting the nuclear phase, the X and Y detection pens should be arranged in the following way for the nuclear phase:

AA': phase angle: 000°±10° in phase;

AB': phase angle: 120°±10° or 240°±10° out of phase;

BB'000°±10°in phase;

BC'120°±10° or 240°±10° out of phase;

CC': Phase angle: 000°±10° in phase.

③Phase sequence measurement: according to the calibrated phases A, B, and C, put X on phase A and Y on phase B. If it shows 120°, it means that it is in the sequence of phases. If it shows 240°, it means Reverse phase sequence.

④ If the test data of AA′, AB′, BB′, BC′, and CC′ show different phases in the results of the phase operation, it is because the wiring groups of the two power supply lines tested are different, and AA′ , BB', CC' may have a phase difference of 30° or 60°. Nuclear phase results should be considered out of phase.

The display state reference table is given below:

Claims (4)

1. a kind of 10kV switchgear nuclear phase device, it is characterized in that: comprise signal acquisition module, signal amplification module, analysis module, A/D converter, display and buzzer; Described signal acquisition module is externally connected with a pair of XY test pens and a grounding wire, the test pens are respectively connected to two phase-checked ports on the high-voltage live display device arranged on the 10kV switch cabinet, and the current signal is transmitted to the signal acquisition module; The signal acquisition module transmits the current signals collected by the XY test pens to the signal amplification module; The signal amplification module amplifies the current signal collected by the signal acquisition module and transmits it to the analysis module; The analysis module obtains the phase angle difference from the received current signal comparison, and transmits the phase angle difference to the A/D converter; The A/D converter converts the phase angle difference transmitted by the analysis module into a digital signal, and transmits the digital signal to the display and the buzzer; The display shows the phase angle difference after receiving the digital signal transmitted by the A/D converter; The buzzer emits a buzzing sound after receiving the digital signal transmitted by the A/D converter. 2. The 10kV switchgear phase verification device according to claim 1, characterized in that: the analysis module also judges the same phase or different phase according to the obtained phase angle difference, and transmits the result of the same phase or different phase to the The A/D converter; The A/D converter converts the in-phase or out-of-phase results transmitted by the analysis module into digital signals, and transmits the digital signals to the display and the buzzer; After the display receives the digital signal transmitted by the A/D converter, it displays the result of in-phase or out-of-phase. 3. The 10kV switchgear phase checking device according to claim 2, characterized in that: the buzzer emits one sound when it receives an in-phase signal, and emits another sound when it receives an out-of-phase signal. 4. The 10kV switch cabinet phase nuclear device according to any one of claims 1-3, characterized in that: the display screen is a liquid crystal display screen with a backlight.

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