Novel power system broadband oscillation data multi-port repeater

Abstract

The utility model discloses a novel broadband oscillation data multi-port transponder for an electric power system, which comprises a case. A network controller used for obtaining and forwarding broadband oscillation data, a shared memory device used for storing the obtained broadband oscillation data, a time synchronization device used for achieving time synchronization and an I / O controller used for being connected with external equipment are arranged in the case. The signal ends of the shared memory device, the time synchronization device and the I / O controller are connected with the signal end of the network controller; a data acquisition device and a data forwarding device are arranged on the outer side of the case; the signal input end of the network controller is connected with the signal input end of the data acquisition device, and the signal output end of the network controller is connected with the signal input end of the data forwarding device. According to the utility model, the acquired broadband oscillation data can be stored in time, the data packet loss condition is avoided, and the monitoring effect on the broadband oscillation data is improved.

Description

Technical Field

[0001] The utility model relates to the field of electric power systems, in particular to a novel broadband oscillation data multi-port repeater for electric power systems. Background Art

[0002] In recent years, the power system is gradually developing towards a high proportion of new energy and a high proportion of power electronic equipment. The problem of broadband oscillation caused by the interaction between new energy such as wind power and photovoltaic power and the power grid has become increasingly prominent. In order to realize the monitoring of the dynamic behavior of broadband oscillation, the patent number ZL202320559466.X discloses a broadband oscillation on-site monitoring and control device for new energy stations, which can realize the calculation, transmission, storage, packaging and sending operations of broadband oscillation data; but unlike the traditional phasor measurement device that only needs to calculate and process a fundamental phasor, the broadband oscillation monitoring device needs to calculate and process multiple broadband phasor information, including: fundamental, harmonics and interharmonics; moreover, the new energy system often needs to monitor multiple lines at the same time, and its monitoring line is relatively complex. Under the condition of certain hardware computing resources of the broadband oscillation monitoring device, data packet loss occurs during the storage of broadband oscillation data, which seriously affects the monitoring effect of broadband oscillation data, and it is necessary to improve it. Summary of the invention

[0003] The utility model aims to solve the above problems and provide a new type of broadband oscillation data multi-port repeater for electric power system which has simple structure and convenient use.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A novel multi-port repeater for broadband oscillation data in an electric power system comprises a chassis, wherein a network controller for acquiring broadband oscillation data and forwarding the broadband oscillation data, a shared memory device for storing the acquired broadband oscillation data, a time synchronizer for realizing time synchronization, and an I / O controller for connecting external devices are arranged in the chassis; the signal ends of the shared memory device, the time synchronizer, and the I / O controller are all connected to the signal end of the network controller; a data acquisition device and a data forwarding device are arranged on the outside of the chassis; the signal input end of the network controller is connected to the signal input end of the data acquisition device, and the signal output end of the network controller is connected to the signal input end of the data forwarding device.

[0006] Furthermore, the data acquisition device includes a data acquisition terminal for acquiring broadband oscillation data and a first broadband oscillation data forwarding device for receiving broadband oscillation data of a previous level. The signal output ends of the data acquisition terminal and the first broadband oscillation data forwarding device are both connected to the signal input end of the data acquisition device.

[0007] Furthermore, the data forwarding device includes a second broadband oscillation data forwarding device for processing broadband oscillation data and forwarding the broadband oscillation data to the next level, and a display main station for displaying broadband oscillation data; the signal input ends of the second broadband oscillation data forwarding device and the display main station are both connected to the signal output end of the network controller.

[0008] Furthermore, an external clock for recording external time is arranged outside the chassis, and a signal output end of the external clock is connected to a signal input end of the time synchronizer.

[0009] Furthermore, the external devices include a display, a mouse, and a keyboard; the I / O controller is provided with a VGA interface and is connected to the display arranged outside the chassis through the VGA interface; the I / O controller is provided with a USB interface and is connected to the mouse and keyboard arranged outside the chassis through the USB interface.

[0010] Compared with the prior art, the utility model has the following advantages and positive effects:

[0011] The utility model can perform simple or complex flexible connection configuration according to the actual working environment by setting the design of the network controller; in a simple environment, only one adapter is needed to realize the direct connection between the data acquisition terminal, the display main station and the adapter; in a complex environment, multiple data acquisition terminals, multiple repeaters, and multiple display main stations can be connected through cascade connection, mixed connection, etc., thereby realizing the collection and forwarding operations of broadband oscillation data in different environments; the entire connection operation is convenient and fast, the monitoring line connection structure of the new energy system is simplified, and the convenience of monitoring broadband oscillation data in the new energy system is improved; and the network controller in the utility model is connected to the shared memory device, which can store the acquired broadband oscillation data in time, avoids the occurrence of data packet loss, and improves the monitoring effect of broadband oscillation data. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 This is a framework diagram of the utility model;

[0014] Figure 2 This is a direct connection structure diagram of the utility model;

[0015] Figure 3 This is a cascade structure diagram of the utility model;

[0016] Figure 4 This is a hybrid structure diagram of the utility model;

[0017] Figure 5 This is a structural diagram of the indicator light of the utility model;

[0018] Figure 6 This is a structural diagram of the connection interface of the utility model;

[0019] Figure 7 This is a structural diagram of the power terminal interface of the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the utility model.

[0021] This embodiment discloses a novel power system broadband oscillation data multi-port repeater, whose overall structure is as follows: Figure 1 As shown, the whole structure is integrated into the chassis 5; the chassis 5 is mainly provided with four functional components: a network controller 1, a shared memory component 3, a timer 2 and an I / O controller 4; the signal ends of the shared memory component 3, the timer 2 and the I / O controller 4 are all connected to the signal end of the network controller 1;

[0022] The network controller 1 is responsible for connecting with the external network, acquiring broadband oscillation data by connecting to the data acquisition device 6; forwarding the collected broadband oscillation data by connecting to the data forwarding device 7; the data acquisition device 6 includes a broadband data acquisition terminal 11, and a first broadband oscillation data forwarding device 12 that receives broadband oscillation data of the previous level; the data forwarding device 7 includes a display main station 14, and a second broadband oscillation data forwarding device 13 that processes broadband oscillation data or forwards broadband oscillation data to the next level.

[0023] After the data acquisition device 6 collects the broadband oscillation data through the network controller 1 , the data is processed, synchronized by the timer 2 , and stored in the shared memory 3 , and then the collected broadband oscillation data is forwarded through the network controller 1 .

[0024] The timer 2 synchronizes the internal clock by connecting with the external clock 8 to achieve time synchronization.

[0025] The I / O control 4 is connected to a display 10 via a VGA interface and is connected to external input devices 9 such as a mouse and a keyboard via a USB interface.

[0026] The utility model can realize various collection and connection modes between the broadband data acquisition terminal 11, the multi-port forwarding device (i.e. the power system broadband oscillation data multi-port forwarder disclosed by the utility model) and the display main station 14; which mainly include direct connection mode, cascade connection mode and mixed connection mode.

[0027] Direct connection method such as Figure 2 As shown, multiple broadband data acquisition terminals 11 are directly connected to the multi-port forwarding device. The multi-port forwarder collects the broadband oscillation data of multiple broadband data acquisition terminals 11; after the broadband data of multiple terminals are collected and synchronized through the time synchronizer 2, they are directly forwarded to one or more display main stations for display operations.

[0028] Cascade mode such as Figure 3 As shown, one or more second broadband oscillation data forwarding devices 13 of the previous stage can be connected to the first broadband oscillation data forwarding device 12 of the next stage in a cascade manner; the broadband oscillation data obtained by the multi-port forwarding device of the previous stage is forwarded to the first broadband oscillation data forwarding device 12 of the next stage via the second broadband oscillation data forwarding device 13, and then transmitted to the multi-port forwarding device of the next stage.

[0029] The hybrid connection mode is a hybrid structure of direct connection and cascade connection, such as Figure 4 As shown, the upper level of the multi-port forwarding device is connected to one or more broadband data acquisition terminals, and is simultaneously connected in cascade with one or more first broadband oscillation data forwarding devices 12; the lower level of the multi-port forwarding device can be connected to one or more display main stations, and is simultaneously connected in cascade with one or more second broadband oscillation data forwarding devices 13.

[0030] The hardware configuration of the multi-port forwarding device in the utility model is as follows:

[0031] CPU: Inter I5-4300U; that is, the network controller;

[0032] Memory 8G DDR3L; that is, shared memory;

[0033] 2U rackmount chassis, fanless, dustproof;

[0034] Support 6 Gigabit Ethernet ports;

[0035] The rear panel supports 3x USB2.0;

[0036] CRT resolution: up to 2048x1536@75Hz;

[0037] High level of EMC protection;

[0038] Support 1T SSD;

[0039] Operating temperature: -25~55℃;

[0040] Full load power: 30W;

[0041] Input voltage range:

[0042] AC: 110V / 220V (85-265V), 50 / 60Hz;

[0043] DC: 110V / 220V (88-265V);

[0044] The front panel indicator light of the multi-port forwarding device in the utility model is as follows Figure 5 Its specific display functions are shown in the following table:

[0045]

[0046]

[0047] The rear panel connection interface of the multi-port forwarding device in the utility model is as follows Figure 6 Its specific functions are shown in the following table:

[0048]

[0049] The power terminal interface of the multi-port forwarding device in the utility model is as follows Figure 7 The line connection method is shown in the following table:

[0050] Pin1 A1 Power failure alarm node Pin2 A2 Power failure alarm node Pin3 NC Empty pin Pin4 L Phase line Pin5 N Neutral Pin6 NC Empty pin Pin7 PG Protection (chassis) ground

[0051] The utility model can perform simple or complex flexible connection configuration according to the actual working environment by setting the design of the network controller; in a simple environment, only one adapter is needed to realize the direct connection between the data acquisition terminal, the display main station and the adapter; in a complex environment, multiple data acquisition terminals, multiple repeaters, and multiple display main stations can be connected through cascade connection, mixed connection, etc., thereby realizing the collection and forwarding operations of broadband oscillation data in different environments; the entire connection operation is convenient and fast, the monitoring line connection structure of the new energy system is simplified, and the convenience of monitoring broadband oscillation data in the new energy system is improved; and the network controller in the utility model is connected to the shared memory device, which can store the acquired broadband oscillation data in time, avoids the occurrence of data packet loss, and improves the monitoring effect of broadband oscillation data.

Claims

1. A novel power system broadband oscillation data multi-port repeater, comprising a chassis, characterized in that: The chassis is provided with a network controller for acquiring and forwarding broadband oscillation data, a shared memory device for storing the acquired broadband oscillation data, a time synchronizer for realizing time synchronization, and an I / O controller for connecting external devices; the signal ends of the shared memory device, the time synchronizer, and the I / O controller are all connected to the signal end of the network controller; the outside of the chassis is provided with a data acquisition device and a data forwarding device; The signal input end of the network controller is connected to the signal input end of the data acquisition device, and the signal output end of the network controller is connected to the signal input end of the data forwarding device.

2. The novel power system broadband oscillation data multi-port repeater as claimed in claim 1, characterized in that: The data acquisition device includes a data acquisition terminal for acquiring broadband oscillation data and a first broadband oscillation data forwarding device for receiving broadband oscillation data of a previous level. The signal output ends of the data acquisition terminal and the first broadband oscillation data forwarding device are both connected to the signal input end of the data acquisition device.

3. The novel power system broadband oscillation data multi-port repeater as claimed in claim 2, characterized in that: The data forwarding device includes a second broadband oscillation data forwarding device for processing broadband oscillation data and forwarding the broadband oscillation data to the next level, and a display main station for displaying broadband oscillation data; the signal input ends of the second broadband oscillation data forwarding device and the display main station are both connected to the signal output end of the network controller.

4. The novel power system broadband oscillation data multi-port repeater as claimed in claim 3, characterized in that: An external clock for recording external time is arranged outside the chassis, and a signal output end of the external clock is connected to a signal input end of the timer.

5. The novel power system broadband oscillation data multi-port repeater as claimed in claim 4, characterized in that: The external devices include a display, a mouse, and a keyboard; the I / O controller is provided with a VGA interface and is connected to the display arranged outside the chassis through the VGA interface; the I / O controller is provided with a USB interface and is connected to the mouse and keyboard arranged outside the chassis through the USB interface.

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