WO2018040481A1 - 一种适用于柔性直流输电系统的仿真接口装置 - Google Patents

一种适用于柔性直流输电系统的仿真接口装置 Download PDF

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WO2018040481A1
WO2018040481A1 PCT/CN2017/071188 CN2017071188W WO2018040481A1 WO 2018040481 A1 WO2018040481 A1 WO 2018040481A1 CN 2017071188 W CN2017071188 W CN 2017071188W WO 2018040481 A1 WO2018040481 A1 WO 2018040481A1
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interface
transmission system
direct current
flexible direct
simulation
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French (fr)
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张群
郝俊芳
严兵
王柏恒
赵倩
陈朋
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Xuji Group Co Ltd
XJ Electric Co Ltd
State Grid Corp of China SGCC
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Xuji Group Co Ltd
XJ Electric Co Ltd
State Grid Corp of China SGCC
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus

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  • the utility model belongs to the field of power electronics and user power, and particularly relates to a simulation interface device suitable for a flexible direct current power transmission system.
  • the flexible multi-level converter (MMC)-based flexible DC transmission system Compared with the traditional flexible DC transmission system (based on IGBT series technology), the flexible multi-level converter (MMC)-based flexible DC transmission system has been induced in recent years due to its simple structure and easy engineering implementation. The extensive attention of experts and researchers at home and abroad.
  • MMC multi-level converter
  • An important feature of the MMC topology is the placement of energy storage capacitors into sub-modules in series. This brings a series of problems. For example, due to the existence of the bridge arm current, the capacitance voltage of each sub-module changes momentarily. How to keep the capacitance voltage of each sub-module stable becomes a technical difficulty, and as the number of levels increases Traditional high-voltage DC valve-based electronic devices are no longer suitable, and new valve-based electronic devices have been applied to flexible direct current transmission. Due to the application of the new valve-based electronic device, the relevant real-time digital simulation platform can not be directly connected with it. It is necessary to develop a new simulation interface and protocol conversion method to achieve the purpose of accessing the real-time digital simulation platform of the flexible DC valve-based electronic device.
  • valve-based electronic devices Due to the large difference in the number of sub-modules of flexible DC transmission systems with different voltage levels, and the implementation methods of different manufacturers of valve-based electronic devices are different, a new type of interface and protocol conversion method can be used according to different levels of flexible DC transmission systems and different manufacturers. Valve-based electronics are flexibly adjusted to meet different application needs. At the same time, with the application of the new protocol of the compliance system, a new interface is needed to match it.
  • the comparison document with the patent number "CN204926072U” discloses a communication interface board suitable for a real-time simulation platform of a flexible direct current transmission system, the interface board including a core processor, and The independent optical fiber interface and high-speed serial interface and power supply connected by the core processor, the board processes each interface through the core processor to ensure data synchronization, and the independent optical fiber interface satisfies different wavelengths and different optical head access control systems.
  • the requirement is to adopt a unified hardware structure design, so that the interface device can be flexibly adjusted according to the flexible DC system valve-based electronic device to meet the requirements of different manufacturers' valve-based electronic devices to access the real-time simulation platform, but the interface board is not set.
  • the indicator light when connected to the real-time simulation platform simulation, cannot display the current running status of the device.
  • the device When the device is in a fault state, if the status indicator is not set, the running personnel cannot know in advance what the running state of the emulation interface is. It is not convenient for the operating personnel to find the problem in time, affecting the normal use of the device and the simulation process.
  • the purpose of an embodiment of the present invention is to provide a simulation interface device suitable for a flexible direct current transmission system.
  • an embodiment of the present invention provides a simulation interface device suitable for a flexible direct current transmission system, the device comprising a high speed signal processing unit, a fiber optic interface connected to the high speed signal processing unit, and a power source, the device further including At least one indicator light connected to the high speed signal processing unit;
  • the indicator is configured to perform a fault indication.
  • the fault includes at least one of the following: the interface is unreachable, the data is faulty, and the interface protocol is not matched.
  • the high speed signal processing unit is configured to dynamically assign at least one indicator light to at least one fiber optic interface in an active state such that each fiber optic interface corresponds to an indicator light assigned thereto.
  • the apparatus also includes a programming interface coupled to the high speed signal processing unit.
  • the device adopts a panel structure, and the panel includes a front panel and a rear panel.
  • the indicator light is disposed on a front panel of the device, and the fiber optic interface is disposed on a rear panel of the device.
  • the power interface is disposed on the right side of the rear panel for powering the entire device.
  • the fiber interface includes a 1310 nm fiber interface and an 850 nm fiber interface.
  • the 1310 nm optical fiber interface adopts the ST interface form
  • the 850 nm optical fiber interface adopts the ST interface form and the LC interface form.
  • the status indicator on the device By setting the status indicator on the device, it can timely reflect any faults such as interface failure, data error, and interface protocol mismatch. It is convenient for the operation personnel to know the operation status of the system in advance and to facilitate the operation personnel to find the problem.
  • the simulation interface of the flexible DC transmission system can meet the requirements of different manufacturers' dual-valve-based electronic equipment access simulation platform by re-installing different types of independent optical fiber interfaces, and can be cascade-expanded by synchronous mode to meet the requirements. Real-time simulation requirements for flexible HVDC systems with different levels.
  • FIG. 1 is a schematic diagram of a rear panel of a simulation interface device of a flexible direct current transmission system
  • FIG. 2 is a schematic diagram of a front panel of a simulation interface device of a flexible direct current transmission system
  • Figure 3 is a simulation interface diagram of a flexible direct current transmission system
  • Figure 4 is a schematic diagram of the simulation connection of the flexible direct current transmission system.
  • the utility model relates to a simulation interface device suitable for a flexible direct current transmission system.
  • the device comprises a high-speed signal processing unit, an independent optical fiber interface connected with a high-speed signal processing unit, and an independent optical fiber interface.
  • independent fiber optic interface 4 power supply, programming interface, the package
  • the reset includes an indicator light connected to the high speed signal processing unit, a front panel on the device, and a high speed interface 3 connected to the high speed signal processing unit.
  • the high-speed signal processing unit summarizes and processes each interface data, and can also download the application program through the programming interface, and analyze and send the control instructions of the valve-based electronic device to the simulation system according to the protocol requirements; the independent optical fiber interface is used to receive the light.
  • Wavelength signal, and forward the relevant signal to the high-speed signal processing unit, the power supply is separately set on the right side of the rear panel, used for power supply of the whole simulation device, by converting DC24V power into DC5V power supply for high-speed signal processing unit, independent optical fiber interface, high speed Serial fiber optic interface and indicator power supply, because no engineering supply is required, the power supply mode is a separate power supply. If the power supply fails, the power supply needs to be replaced after power off.
  • the independent optical fiber interface can access the optical wavelength signals of 850 nm and 1310 nm according to actual requirements, all adopt ST fiber optical interface, and the optical fiber interface of 850 nm supports IEC60044-8 and TDM protocol analog measurement.
  • the system outputs the bridge arm current and the valve measurement voltage signal; at the same time receives the control command of the upper control system, the 1310nm optical fiber interface receives the active signal, the synchronization signal and other control signals of the valve control system, and returns the state information required by the valve control system.
  • the communication rate can reach more than 100 megabytes, and the number of optical transceivers can be adjusted according to different requirements to achieve bidirectional interconnection with external controllers and simulation devices.
  • the independent optical fiber interface has a 850nm high-speed serial optical fiber interface in the form of a multi-channel LC connector, which can simultaneously access the dual-valve-based electronic device, the AB system, to resolve the effective signal by identifying the active signal of the valve-based electronic device, and adopt the Aurora protocol to open the valve.
  • the non-standard protocol used by the base electronic device and system is converted into a standard frame format and then transmitted to the outside.
  • the specific conversion process is to first set the communication interface, perform initialization, and then read the receiving buffer area data of the corresponding interface, and finally convert the buffer area data according to the corresponding protocol, and send the converted to the transmission buffer area, and the communication rate is the highest.
  • 5Gb/s the output of the sub-module capacitor voltage in the flexible system converter; all the data of the independent fiber interface and the high-speed serial fiber interface are summarized by the backplane to the separately placed high-speed signal processing unit according to the actual The protocol used The line is parsed and forwarded to the simulation system.
  • the received sub-module capacitor voltage and other information of the simulation system are forwarded to the valve-based electronic device to ensure data synchronization, and the interface can also be externally
  • the programming interface downloads the application, making it easy for developers to debug the project.
  • the front panel of the device is placed with at least one indicator light in a state of 20, and the high-speed signal processing unit is configured to dynamically allocate at least one indicator light to at least one fiber interface in an active state, so that each fiber interface is associated with the same
  • the assigned indicators correspond.
  • the cable is connected to the high-speed signal processing unit.
  • the indicator light is dynamically allocated by the high-speed signal processing unit to the optical fiber interface in the working state. That is, the interfaces to be used are selected according to the needs of the work, and then the indicators corresponding to the interfaces are assigned one by one; when other interfaces are required to be connected to the working state, the indicators corresponding to the interfaces are assigned one by one.
  • the indicator is specifically configured to perform a fault indication.
  • the fault includes at least one of the following: the interface is unreachable, the data is faulty, and the interface protocol is not matched. That is to say, the indicator light is used to reflect any fault in the interface failure, data error, and interface protocol mismatch.
  • the operating status of the indicator light can be as follows:
  • the program automatically detects whether the fiber link is unobstructed. If it is not smooth, the fault occurs and the red light is on;
  • the program automatically detects whether the check digits in the data match. If there is no match, the corresponding fault occurs and the red light is on;
  • the program determines that if the fiber link is unobstructed, the data does not match, and the check digit does not match for a certain period of time, the corresponding fault occurs, and the red light is on.
  • the indicator light can reflect the current running status of the system in time, and it is convenient for the operating personnel to find the fault problem and ensure that the system is in a normal working state.

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Abstract

一种适用于柔性直流输电系统的仿真接口装置，该装置包括高速信号处理单元、与高速信号处理单元连接的光纤接口(1,2,3,4)、电源，该装置还包括与高速信号处理单元连接的指示灯。

Description

一种适用于柔性直流输电系统的仿真接口装置 技术领域
本实用新型属于电力电子及用户电力领域，特别涉及一种适用于柔性直流输电系统的仿真接口装置。
背景技术
相对于传统的柔性直流输电系统(基于IGBT串联技术)，基于模块化多电平换流器(modular multilevel converter，MMC)的柔性直流输电系统因其结构简单，易于工程实施等特点在近年来引起了国内外专家学者的广泛关注。
MMC拓扑结构中一个重要的特点是将储能电容放到了串联的子模块当中。这带来了一系列的问题，比如由于桥臂电流的存在，使得各个子模块的电容电压时刻在变化，如何保持每个子模块的电容电压稳定成为一个技术难点，且随着电平数的增多，传统高压直流的阀基电子装置已不适用，已有新型的阀基电子装置应用于柔性直流输电。由于新型阀基电子装置的应用，相关实时数字仿真平台已经不能与其直接连接，需开发新的仿真接口及协议转换方法以达到柔性直流阀基电子装置接入实时数字仿真平台的目的。
由于不同电压等级柔性直流输电系统子模块数量差距较大，且阀基电子装置不同厂家实现方式不尽相同，需有新型接口及协议转换方法可以根据不同电平数的柔性直流输电系统及不同厂家阀基电子装置进行灵活调整，以满足不同应用需求。同时随着柔直系统新的协议的应用，也需新的接口与之匹配。
专利号为“CN204926072U”的对比文件，公开了一种适用于柔性直流输电系统实时仿真平台的通信接口板卡，该接口板卡包括核心处理器、与 核心处理器连接的独立光纤接口和高速串行接口及电源，该板卡将各个接口通过核心处理器进行处理，保证了数据的同步性，独立光纤接口满足不同波长、不同光头接入控制系统的需求，采用统一的硬件结构设计，使得接口装置可以根据柔性直流系统阀基电子装置进行灵活调整，以满足不同厂家阀基电子装置接入实时仿真平台的需求，但是该接口板卡中未设置状态指示灯，接入实时仿真平台仿真的过程中，不能显示设备当前运行状态。设备处于故障状态时，如果没有设置状态指示灯，运行人员无法提前得知仿真接口处于什么样的运行状态，不方便运行人员及时查找问题，影响设备的正常使用及仿真过程的进行。
发明内容
本实用新型实施例的目的在于提供一种适用于柔性直流输电系统的仿真接口装置，
用于解决不能实时监测柔性直流输电系统接入实时仿真平台运行状态的问题。
为实现上述目的，本实用新型实施例提供了一种适用于柔性直流输电系统的仿真接口装置，该装置包括高速信号处理单元、与高速信号处理单元连接的光纤接口、电源，该装置还包括与高速信号处理单元连接的至少一个指示灯；
所述指示灯，配置为进行故障指示；其中，所述故障包括有以下至少之一：接口不通、数据出错、接口协议不匹配。
所述高速信号处理单元，配置为将至少一个指示灯动态分配给处于工作状态的至少一个光纤接口，使每一个光纤接口均与为其分配的指示灯相对应。
该装置还包括与高速信号处理单元连接的编程接口。
该装置采用面板结构，所述面板包括前面板、后面板。
所述指示灯设置在装置的前面板上，所述的光纤接口设置在装置的后面板上。
所述电源接口设置在后面板的右侧，用于为整个装置供电。
所述光纤接口包括1310nm的光纤接口和850nm的光纤接口。
所述1310nm的光纤接口采用ST接口形式，所述850nm的光纤接口采用ST接口形式和LC接口形式。
本实用新型实施例的有益效果是：
通过在装置上设置状态指示灯，能及时反映接口不通、数据出错、接口协议不匹配的任何一种故障，方便运行人员提前得知系统的运行状况，及方便运行人员查找问题。
采用统一的硬件结构设计，柔性直流输电系统的仿真接口通过换装不同型号的独立光纤接口满足不同厂家双重化阀基电子设备接入仿真平台的需求，同时可通过同步方式进行级联扩展，满足不同电平数的柔性直流输电系统实时仿真需求。
附图说明
图1为柔性直流输电系统的仿真接口装置后面板示意图；
图2为柔性直流输电系统的仿真接口装置前面板示意图；
图3柔性直流输电系统的仿真接口图；
图4柔性直流输电系统的仿真连接示意图。
具体实施方式
下面结合附图对本实用新型的具体实施方式作进一步说明。
本实用新型的一种适用于柔性直流输电系统的仿真接口装置，如图1，图3所示，该装置包括高速信号处理单元、与高速信号处理单元连接的独立光纤接口1、独立光纤接口2和独立光纤接口4，电源、编程接口，该装 置还包括与高速信号处理单元连接的指示灯，设置在装置前面板上，以及与高速信号处理单元连接的高速接口3。
其中，高速信号处理单元汇总各个接口数据并进行处理，也可通过编程接口下载应用程序，同时根据协议要求将阀基电子设备的控制指令进行解析并发送给仿真系统；独立光纤接口用于接收光波长信号，并将相关信号转发给高速信号处理单元，电源单独设置在后面板的右侧，用于整个仿真装置供电，通过将DC24V电源转换成DC5V电源为高速信号处理单元、独立光纤接口，高速串行光纤接口和指示灯供电，由于不需要工程供货，供电方式为单独电源供电，若电源出现故障，需断电后更换电源。
本实用新型的具体实施过程，如图4所示，独立光纤接口可根据实际需求接入850nm及1310nm的光波长信号，都采用ST光纤接口，850nm的光纤接口支持IEC60044-8及TDM协议模拟测量系统，以输出桥臂电流、阀测电压信号；同时接收上层控制系统的控制指令，1310nm的光纤接口接收阀控系统主动信号、同步信号及其他控制信号，回传阀控系统所需状态信息，其通信速率可达百兆以上，而且光收发器数量也可根据不同需求进行调整，实现与外部控制器和仿真装置的双向互联。
独立光纤接口具备多路LC接头形式的850nm高速串行光纤接口，可同时接入双重阀基电子设备即AB系统，通过识别阀基电子设备的主动信号将有效信号解析，采用Aurora协议，将阀基电子设备及系统所使用的非标协议转换为标准的帧格式后，再对外发送。
其中，具体转换过程为首先设置通讯接口，进行初始化，然后读取对应接口的接收缓存区数据，最后按照相应的协议转换缓存区数据，并将转换后的发送到发送缓存区，其通信率最高可达5Gb/s，将柔直系统换流器中的子模块电容电压的输出；独立光纤接口和高速串行光纤接口的所有数据通过背板将信号汇总到单独放置的高速信号处理单元按照实际所用协议进 行解析处理并转发给仿真系统，同时也根据Aurora流模式协议将接收到的仿真系统的子模块电容电压等信息转发给阀基电子设备，保证数据的同步性，同时此接口也可通过外置编程接口下载应用程序，方便开发人员进行工程调试。
该装置前面板放置有20路状态的至少一个指示灯，所述高速信号处理单元，用于将至少一个指示灯动态分配给处于工作状态的至少一个光纤接口，使每一个光纤接口均与为其分配的指示灯相对应。如图2所示，通过排线与高速信号处理单元连接，在实际的工作过程中，并不是所有的接口都处于工作状态，指示灯由高速信号处理单元动态分配给处于工作状态的光纤接口，即根据工作的需要选择要使用的接口，然后再一一分配给接口对应的指示灯；当需要其他的接口接入工作状态时，再重新一一分配给接口对应的指示灯。
指示灯，具体用于进行故障指示；其中，所述故障包括有以下至少之一：接口不通、数据出错、接口协议不匹配。也就是说，用所述指示灯用于反映接口不通、数据出错、接口协议不匹配中的任何一种故障。
指示灯的运行状态可以如下：
程序检测的接口未出现故障时，绿灯亮；
当接口不通时，程序自动检测光纤链路是否通畅，若不通畅，发生故障，红灯亮；
当数据出错时，程序自动检测数据中的校验位是否匹配，若不匹配，发生相应故障，红灯亮；
当接口协议不匹配时，程序判断若光纤链路通畅、数据不匹配、及校验位不匹配持续一定时间后，发生相应故障，红灯亮。
指示灯能够及时反映系统当前的运行状态，方便运行人员查找故障问题，确保系统处于正常的工作状态。
以上所述，仅为本实用新型较佳的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，可轻易想到的变化或替换，都应该涵盖在本实用新型的保护范围之内。因此，本实用新型的保护范围应该以权力要求的保护范围为准。

Claims (8)

  1. 一种适用于柔性直流输电系统的仿真接口装置，该装置包括高速信号处理单元、与高速信号处理单元连接的光纤接口、电源，该装置还包括与高速信号处理单元连接的至少一个指示灯；
    所述指示灯，配置为进行故障指示；其中，所述故障包括有以下至少之一：接口不通、数据出错、接口协议不匹配。
  2. 根据权利要求1所述的一种适用于柔性直流输电系统的仿真接口装置，其中，
    所述高速信号处理单元，配置为将至少一个指示灯动态分配给处于工作状态的至少一个光纤接口，使每一个光纤接口均与为其分配的指示灯相对应。
  3. 根据权利要求1所述的一种适用于柔性直流输电系统的仿真接口装置，其中，该装置还包括与高速信号处理单元连接的编程接口。
  4. 根据权利要求1所述的一种适用于柔性直流输电系统的仿真接口装置，其中，该装置采用面板结构，所述面板包括前面板、后面板。
  5. 根据权利要求4所述的一种适用于柔性直流输电系统的仿真接口装置，其中，
    所述指示灯，设置在装置的前面板；
    所述光纤接口，设置在装置的后面板。
  6. 根据权利要求5所述的一种适用于柔性直流输电系统的仿真接口装置，其中，
    所述电源接口，设置在后面板的右侧，用于为整个装置供电。
  7. 根据权利要求1所述的一种适用于柔性直流输电系统的仿真接口装置，其中，所述光纤接口包括1310nm的光纤接口和850nm的光纤接口。
  8. 根据权利要求7所述的一种适用于柔性直流输电系统的仿真接口装 置，其中，所述1310nm的光纤接口，采用ST接口形式；所述850nm的光纤接口，采用ST接口形式和LC接口形式。
PCT/CN2017/071188 2016-08-31 2017-01-13 一种适用于柔性直流输电系统的仿真接口装置 Ceased WO2018040481A1 (zh)

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