阅读说明：本技术 一种无功功率的测量系统 (Reactive power measuring system ) 是由 彭荣 于 2020-12-17 设计创作，主要内容包括：本申请公开了一种无功功率的测量系统,包括回路测量软件装置、正向无功功率检测卡件、反向无功功率检测卡件以及待测量装置,正向无功功率检测卡件的检测负极连接待测量装置的负极,正向无功功率检测卡件用于检测待检测装置的正向无功功率,并将正向无功功率发送至回路测量软件装置,回路测量软件装置连接正向无功功率检测卡件以及反向无功功率检测卡件,并接收正向无功功率检测卡件发送的正向无功功率以及接收反向无功功率检测卡件发送的反向无功功率,并向用户展示正向无功功率以及反向无功功率。不需要更换测量卡件、升级更换系统,改善了用户体验。(The application discloses reactive power's measurement system, including the return circuit measurement software device, forward reactive power detects the fastener, reverse reactive power detects the fastener and awaits measuring the device, the negative pole that awaits measuring the device is connected to the detection negative pole of forward reactive power detection fastener, forward reactive power detects the fastener and is used for detecting the forward reactive power who waits to detect the device, and send forward reactive power to the return circuit measurement software device, the return circuit measurement software device connects forward reactive power and detects fastener and reverse reactive power and detect the fastener, and receive the forward reactive power that forward reactive power detected the fastener and sent and receive the reverse reactive power that reverse reactive power detected the fastener and send, and show forward reactive power and reverse reactive power to the user. The measuring clamping piece does not need to be replaced, the replacing system is upgraded, and the user experience is improved.)

1. A reactive power measurement system is characterized by comprising a loop measurement software device, a forward reactive power detection clamping piece, a reverse reactive power detection clamping piece and a device to be measured, wherein the device to be measured comprises a positive pole and a negative pole;

the positive reactive power detection clamping piece comprises a detection positive electrode and a detection negative electrode, the detection positive electrode of the positive reactive power detection clamping piece is connected with the positive electrode of the device to be measured, the detection negative electrode of the positive reactive power detection clamping piece is connected with the negative electrode of the device to be measured, and the positive reactive power detection clamping piece is used for detecting the positive reactive power of the device to be measured and sending the positive reactive power to the loop measurement software device;

the reverse reactive power detection card comprises a detection positive electrode and a detection negative electrode, the detection negative electrode of the reverse reactive power detection card is connected with the positive electrode of the device to be measured, the detection positive electrode of the reverse reactive power detection card is connected with the negative electrode of the device to be measured, and the reverse reactive power detection card is used for detecting the reverse reactive power of the device to be measured and sending the reverse reactive power to the loop measurement software device;

the loop measurement software device is connected with the forward reactive power detection clamping piece and the reverse reactive power detection clamping piece, receives forward reactive power sent by the forward reactive power detection clamping piece and reverse reactive power sent by the reverse reactive power detection clamping piece, and displays the forward reactive power and the reverse reactive power to a user.

2. The reactive power measurement system of claim 1, wherein the forward reactive power detection card and the reverse reactive power detection card are respectively connected to a reactive power transmitter, and the reactive power transmitter is connected to the loop measurement software device.

3. The reactive power measurement system of claim 1, comprising a plurality of measurement cards for measuring the frequency, system frequency, active power, current, and voltage, respectively, of the device to be measured.

4. The reactive power measurement system of claim 3, wherein the plurality of measurement cards comprises a frequency measurement card, a system frequency measurement card, an active power measurement card, a current, voltage input card.

5. The reactive power measurement system of claim 1 or 2 or 3 or 4, comprising a rectifier cabinet.

Technical Field

The application relates to the field of power detection, in particular to a reactive power measuring system.

Background

The conventional XDPS type DCS system cannot detect the negative value of the reactive power of the device to be detected, cannot display when the reactive power of the device to be detected in the phase-in operation is the negative value, and influences operators to monitor the phase-in operation state of the generator set so as to endanger the safety of the generator set. In the prior art, only the measuring card can be replaced to upgrade the DCS system, and the cost is huge.

Disclosure of Invention

The technical problem that this application embodiment will solve lies in, solves prior art and can only change measurement card piece upgrading DCS system, problem that the cost is huge.

In order to solve the above problem, an embodiment of the present application provides a reactive power measurement system, including a loop measurement software device, a forward reactive power detection card, a reverse reactive power detection card, and a device to be measured, where the device to be measured includes a positive electrode and a negative electrode;

the positive reactive power detection clamping piece comprises a detection positive electrode and a detection negative electrode, the detection positive electrode of the positive reactive power detection clamping piece is connected with the positive electrode of the device to be measured, the detection negative electrode of the positive reactive power detection clamping piece is connected with the negative electrode of the device to be measured, and the positive reactive power detection clamping piece is used for detecting the positive reactive power of the device to be measured and sending the positive reactive power to the loop measurement software device;

the reverse reactive power detection card comprises a detection positive electrode and a detection negative electrode, the detection negative electrode of the reverse reactive power detection card is connected with the positive electrode of the device to be measured, the detection positive electrode of the reverse reactive power detection card is connected with the negative electrode of the device to be measured, and the reverse reactive power detection card is used for detecting the reverse reactive power of the device to be measured and sending the reverse reactive power to the loop measurement software device;

the loop measurement software device is connected with the forward reactive power detection clamping piece and the reverse reactive power detection clamping piece, receives forward reactive power sent by the forward reactive power detection clamping piece and reverse reactive power sent by the reverse reactive power detection clamping piece, and displays the forward reactive power and the reverse reactive power to a user.

Furthermore, the forward reactive power detection clamping piece and the reverse reactive power detection clamping piece are respectively connected with a reactive power transmitter, and the reactive power transmitter is connected with the loop measurement software device.

The device comprises a plurality of measuring clamping pieces, wherein the measuring clamping pieces are respectively used for measuring the frequency, the system frequency, the active power, the current and the voltage of the device to be measured.

Furthermore, the plurality of measuring card pieces comprise a frequency measuring card, a system frequency measuring card, an active power measuring card and a current and voltage input card.

Further, the device comprises a rectifier cabinet.

Compared with the prior art, this embodiment a reactive power's measurement system, including the return circuit measurement software device, forward reactive power detects the fastener, reverse reactive power detects the fastener and awaits measuring the device, the negative pole that awaits measuring the device is connected to the detection negative pole of forward reactive power detection fastener, forward reactive power detects the fastener and is used for detecting the forward reactive power that waits to detect the device, and send forward reactive power to the return circuit measurement software device, forward reactive power detection fastener and reverse reactive power detection fastener are connected to the return circuit measurement software device, and receive the forward reactive power that forward reactive power detected the fastener and sent and receive the reverse reactive power that reverse reactive power detected the fastener and send, and show forward reactive power and reverse reactive power to the user. Reverse reactive power detection clamping pieces are added in the system, then reverse reactive power measuring points are added, measuring point channels are connected in parallel in a reverse polarity mode from original reactive power measuring point channels, and the reverse reactive power is obtained through output inversion of DCS logic configuration. A reactive power reverse display value is added on a monitoring picture of a generator-transformer set excitation system of the system, so that the operating state of the generator set in the phase-in operation state is correctly reflected, and the operating safety of the generator is improved.

Drawings

Fig. 1 is a schematic diagram of an architecture of a reactive power measurement system according to an embodiment.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The conventional XDPS type DCS system cannot detect the negative value of the reactive power of the device to be detected, cannot display when the reactive power of the device to be detected in the phase-in operation is the negative value, and influences operators to monitor the phase-in operation state of the generator set so as to endanger the safety of the generator set. In the prior art, only the measuring card can be replaced to upgrade the DCS system, and the cost is huge.

To solve the above problem, as shown in fig. 1, an embodiment of the system for measuring reactive power includes a loop measurement software device, a forward reactive power detection card, a reverse reactive power detection card, and a device to be measured, where the device to be measured includes a positive electrode and a negative electrode;

the positive reactive power detection clamping piece comprises a detection positive electrode and a detection negative electrode, the detection positive electrode of the positive reactive power detection clamping piece is connected with the positive electrode of the device to be measured, the detection negative electrode of the positive reactive power detection clamping piece is connected with the negative electrode of the device to be measured, and the positive reactive power detection clamping piece is used for detecting the positive reactive power of the device to be measured and sending the positive reactive power to the loop measurement software device;

the reverse reactive power detection card comprises a detection positive electrode and a detection negative electrode, the detection negative electrode of the reverse reactive power detection card is connected with the positive electrode of the device to be measured, the detection positive electrode of the reverse reactive power detection card is connected with the negative electrode of the device to be measured, and the reverse reactive power detection card is used for detecting the reverse reactive power of the device to be measured and sending the reverse reactive power to the loop measurement software device;

the loop measurement software device is connected with the forward reactive power detection clamping piece and the reverse reactive power detection clamping piece, receives forward reactive power sent by the forward reactive power detection clamping piece and reverse reactive power sent by the reverse reactive power detection clamping piece, and displays the forward reactive power and the reverse reactive power to a user.

And a reverse reactive power measuring point is added through the reverse reactive power detecting clamping piece, a measuring point channel is connected with a wire in a reverse polarity manner from an original reactive power measuring point channel, and the logical configuration output of the system is inverted, so that the reverse reactive power is obtained. A reactive power reverse display value is added on a monitoring picture of a generator-transformer set excitation system of the system, so that the operating state of the generator set in the phase-in operation state is correctly reflected, and the operating safety of the generator is improved.

In an embodiment of the present application, the forward reactive power detection card and the reverse reactive power detection card are respectively connected to a reactive power transmitter, and the reactive power transmitter is connected to the loop measurement software device.

In an embodiment of the present application, the device comprises a plurality of measurement cards, and the measurement cards are respectively used for measuring the frequency, the system frequency, the active power, the current and the voltage of the device to be measured.

In an embodiment of the present application, the plurality of measurement cards include a frequency measurement card, a system frequency measurement card, an active power measurement card, and a current and voltage input card.

In one embodiment of the present application, a rectifier cabinet is included.

The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.