CN114720765A - A Harmonic Algorithm and Control System for Active Distribution Network Based on Situational Awareness - Google Patents
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Abstract
Description
技术领域technical field
本发明涉及主动配电技术领域,具体涉及一种基于态势感知的主动配电网的谐波算法及其控制系统。The invention relates to the technical field of active power distribution, in particular to a harmonic algorithm of an active power distribution network based on situational awareness and a control system thereof.
背景技术Background technique
主动配电网是智能电网的一种表现形式,主动配电网技术的采用有助于充分利用各地的清洁能源和可再生能源,主动配电网的态势感知是在电网大规模系统环境中获取、处理、挖掘和分析引起电网运行态势发生变化的数据,并将结果以可视化方式进行呈现的一种技术。通过态势感知可实现对主动配电网运行态势的全面准确掌控,为在态势感知基础上进行智能管控,以提高复杂主动配电网的调度控制水平提供了有力支撑。Active distribution network is a form of smart grid. The adoption of active distribution network technology helps to make full use of clean energy and renewable energy in various places. The situational awareness of active distribution network is obtained in the large-scale system environment of the power grid. A technology that processes, mines and analyzes the data that causes changes in the power grid operation situation, and presents the results in a visual way. Through situational awareness, the overall and accurate control of the operation situation of the active distribution network can be achieved, which provides a strong support for intelligent management and control based on situational awareness to improve the dispatching control level of complex active distribution networks.
随着分布式电源(distributed generation,DG)、储能装置(energy storagesystem,ESS)、分组投切电容器(capacitors banks,CB)等设备的渗透率在配电网层级上的不断提高,同时引起了电压波动以及双向潮流等问题。With the continuous increase in the penetration rate of distributed generation (DG), energy storage system (ESS), capacitor banks (CB) and other equipment at the distribution network level, it has also caused Voltage fluctuations and bidirectional power flow.
目前,依靠大数据技术提供的训练样本,以遗传算法和人工神经网络算法为代表的智能算法在主动配电系统领域已得到了广泛的应用。At present, relying on training samples provided by big data technology, intelligent algorithms represented by genetic algorithms and artificial neural network algorithms have been widely used in the field of active power distribution systems.
然而,随着国民经济的发展,大量的非线性和冲击性负载接入电网,在运行时产生谐波、电压波动和闪变,造成电网电压波形产生畸变,三相不平衡,供电质量下降,影响电网及用户设备安全和经济运行。主动配电系统本质上是一个非线性动态系统,很难建立精确的数学模型进行快速求解,不能及时准确地的测量配电系统中谐波的变化,从而不能有效解决配电网中的管理评估,预测规划,运行控制和故障诊断问题。However, with the development of the national economy, a large number of nonlinear and impact loads are connected to the power grid, and harmonics, voltage fluctuations and flicker are generated during operation, resulting in distortion of the grid voltage waveform, three-phase imbalance, and reduced power supply quality. Affect the safety and economic operation of the power grid and user equipment. The active distribution system is essentially a nonlinear dynamic system, it is difficult to establish an accurate mathematical model to solve quickly, and it cannot measure the changes of harmonics in the distribution system in a timely and accurate manner, so it cannot effectively solve the management evaluation in the distribution network. , predictive planning, operational control and troubleshooting problems.
发明内容SUMMARY OF THE INVENTION
针对现有技术存在的不足,本发明提出一种基于态势感知的主动配电网的谐波算法及其控制系统,以解决不能及时准确地的测量配电网中谐波的变化,造成配电网中的波形产生畸变,不能有效解决配电网中的管理评估,预测规划,运行控制和故障诊断的问题。Aiming at the shortcomings of the prior art, the present invention proposes a harmonic algorithm and a control system for an active distribution network based on situational awareness, so as to solve the problem that the changes of harmonics in the distribution network cannot be measured in a timely and accurate manner, causing the distribution of power distribution problems. The waveform in the network is distorted, which cannot effectively solve the problems of management evaluation, prediction planning, operation control and fault diagnosis in the distribution network.
为达到上述目的,本发明采用如下技术方案:一种基于态势感知的主动配电网的谐波算法,包括以下步骤:In order to achieve the above object, the present invention adopts the following technical scheme: a harmonic algorithm of an active distribution network based on situational awareness, comprising the following steps:
通过从配电网中进行交流采样,获取电流的采样值和电压的采样值;Obtain the sampled value of current and the sampled value of voltage through AC sampling from the distribution network;
将所述电流的采样值和电压的采样值分别构造为复序列;Constructing the sampled value of the current and the sampled value of the voltage as a complex sequence respectively;
将所述复序列进行离散傅里叶变换,并根据离散傅里叶变换的复共轭性质,得到电参数公式、电压的频谱公式和电流的频谱公式;The complex sequence is subjected to discrete Fourier transform, and according to the complex conjugate property of the discrete Fourier transform, an electrical parameter formula, a voltage spectrum formula and a current spectrum formula are obtained;
通过电压的频谱公式和电流的频谱公式分别计算出电压的谐波含量和电流的谐波含量;Calculate the harmonic content of voltage and the harmonic content of current through the spectral formula of voltage and the spectral formula of current respectively;
通过电参数公式计算出配电网中的基本电参数。The basic electrical parameters in the distribution network are calculated through the electrical parameter formula.
采用上述技术方案时,通过从配电网中获取电流的采样值和电压的采样值,通过获取电流的采样值和电压的采样值构造为复序列,然后进行离散傅里叶变换并根据其复共轭性质,从而通过频谱公式得到电压和电流中的基波及谐波含量,同时,根据电参数公式能够计算出配电网中的设备运行的电压、电流、有功和无功功率等基本电参数,从而能够快速和准确地的测量配电网中谐波的变化。When the above technical solution is adopted, a complex sequence is constructed by acquiring the current sampling value and the voltage sampling value from the distribution network, and then the discrete Fourier transform is performed and the complex sequence is obtained by acquiring the current sampling value and the voltage sampling value. Conjugate properties, so that the fundamental wave and harmonic content in the voltage and current can be obtained through the spectrum formula. At the same time, the basic electrical parameters such as voltage, current, active and reactive power of the equipment in the distribution network can be calculated according to the electrical parameter formula. , so that the changes of harmonics in the distribution network can be measured quickly and accurately.
优选的,所述基本电参数公式、电压的频谱公式和电流的频谱公式的计算均采用计算机进行运算。Preferably, the calculation of the basic electrical parameter formula, the voltage spectrum formula and the current spectrum formula are all performed by a computer.
优选的,所述电压的频谱公式和电流的频谱公式为:Preferably, the voltage spectrum formula and the current spectrum formula are:
其中,K=0,1,2,…,N-1为采样次数;N为每周波采样数。Among them, K=0, 1, 2, ..., N-1 is the number of sampling times; N is the number of sampling per cycle.
优选的,所述电参数公式为:Preferably, the electrical parameter formula is:
优选的,所述离散傅里叶变换的具体推导步骤为:Preferably, the specific derivation steps of the discrete Fourier transform are:
配电网中采集具有周期信号的电压和电流可表示为如下公式:The voltage and current with periodic signals collected in the distribution network can be expressed as the following formula:
根据傅里叶级数对式(1)和式(2)进行分解:Decompose equations (1) and (2) according to the Fourier series:
或 or
其中,A0为直流分量,是周期函数f(t)一个周期内的平均值,An和Bn为傅里叶级数的系数,是n次谐波的直角坐标分量。Among them, A 0 is the DC component, which is the average value in one cycle of the periodic function f(t), and A n and B n are the coefficients of the Fourier series, which are the rectangular coordinate components of the n-th harmonic.
得出:n次谐波矢量为:It is obtained that the nth harmonic vector is:
Cn∠φn=An+jBn; C n ∠φ n =A n +jB n ;
离散后,得以下公式:After discretization, the following formula is obtained:
式中,n=0,1,2,…,N-1为谐波次数,K=0,1,2,…,N-1为采样次数;In the formula, n=0,1,2,...,N-1 is the harmonic order, K=0,1,2,...,N-1 is the sampling number;
fk为第K次采样值,N为每周波采样数;f k is the Kth sampling value, and N is the number of samples per cycle;
根据数字信号处理公式:According to the digital signal processing formula:
由式(5)、(6)和(7)可得,离散傅里叶变换(DFT)表示为:From equations (5), (6) and (7), the discrete Fourier transform (DFT) can be expressed as:
本发明还提供一种根据以上的基于态势感知的主动配电网的谐波算法的智能管控系统,包括模数电路、数模电路、光电隔离电路、DSP芯片和FPGA芯片;The present invention also provides an intelligent management and control system according to the above harmonic algorithm of an active distribution network based on situational awareness, including an analog-digital circuit, a digital-analog circuit, an optoelectronic isolation circuit, a DSP chip and an FPGA chip;
所述模数电路用于将采集的电压或电流的模拟信号转换成数字信号,所述数模电路将所述DSP芯片输出的数字信号转换成模拟信号;The analog-to-digital circuit is used to convert the collected analog signal of voltage or current into a digital signal, and the digital-to-analog circuit converts the digital signal output by the DSP chip into an analog signal;
所述光电隔离电路用于将接收的信号进行光电隔离;The optoelectronic isolation circuit is used for optoelectronic isolation of the received signal;
所述数模电路的输出端与所述DSP芯片的输入端电连接,DSP芯片内设有基于态势感知的主动配电网的谐波算法,用于交流采样和电力参数的计算和处理、且对负荷设备的检测、控制和通信;The output end of the digital-analog circuit is electrically connected to the input end of the DSP chip, and the DSP chip is provided with a harmonic algorithm of the active distribution network based on situational awareness, which is used for calculation and processing of AC sampling and power parameters, and Detection, control and communication of load equipment;
所述FPGA芯片的输出端与所述DSP芯片的输入端电连接,FPGA芯片的输入端与所述光电隔离电路的输出端电连接,FPGA芯片用于对接受的若干信号进行融合处理。The output end of the FPGA chip is electrically connected to the input end of the DSP chip, the input end of the FPGA chip is electrically connected to the output end of the optoelectronic isolation circuit, and the FPGA chip is used for fusion processing of several received signals.
采用上述技术方案时,配电网中的电力线输入信号,通过模数电路进行采样,转换后的数字信号送入DSP芯片中,通过主动配电网的谐波算法实现计算,得到配电网中设备运行的电压、电流、有功和无功功率及电度量等数据。同时,原点信号、限位信号及开关信号灯开关量信号经光电隔离电路的光电耦离,送FPGA芯片进行融合处理后,送入到DSP芯片中,从而使得DSP芯片得到配电网的遥信状态、变位记录、脉冲电度量等,并通过DSP芯片遥控自动或手动实现故障段隔离和网络重构,从而实现能缩小停电范围,提高供电可靠性。从而提高配电网调控的可靠性和抗干扰能力。When the above technical solution is adopted, the input signal of the power line in the distribution network is sampled by the analog-to-digital circuit, the converted digital signal is sent to the DSP chip, and the calculation is realized by the harmonic algorithm of the active distribution network, and the distribution network is obtained. Data such as voltage, current, active and reactive power, and electrical energy of equipment operation. At the same time, the origin signal, the limit signal and the switch signal of the switch signal are separated by the photoelectric coupling of the photoelectric isolation circuit, and sent to the FPGA chip for fusion processing, and then sent to the DSP chip, so that the DSP chip can obtain the remote signal status of the distribution network. , displacement recording, pulse power measurement, etc., and through DSP chip remote control to automatically or manually realize fault segment isolation and network reconstruction, so as to reduce the scope of power outages and improve the reliability of power supply. Thereby improving the reliability and anti-interference ability of distribution network regulation.
优选的,还包括RAM、Flash、加密电路和稳压电路,所述RAM、Flash、加密电路和稳压电路均与所述DSP芯片电连接,所述DSP芯片还设有通信接口,所述通信接口包括以太网接口、CAN总线接口、RS-232串口、人机界面接口和PCI接口。Preferably, it also includes RAM, Flash, an encryption circuit and a voltage regulator circuit, and the RAM, Flash, encryption circuit and voltage regulator circuit are all electrically connected to the DSP chip, and the DSP chip is further provided with a communication interface, and the communication The interface includes Ethernet interface, CAN bus interface, RS-232 serial port, human-machine interface interface and PCI interface.
优选的,还包括电平转换电路和脉宽调制电路,所述电平转换电路和脉宽调制电路均与所述DSP芯片电连接,电平转换电路用于脉冲信号的电平转换,脉宽调制电路用于PWM信号的调制。Preferably, it also includes a level conversion circuit and a pulse width modulation circuit. Both the level conversion circuit and the pulse width modulation circuit are electrically connected to the DSP chip. The level conversion circuit is used for level conversion of pulse signals. The modulation circuit is used for modulation of the PWM signal.
优选的,所述光电隔离电路的输入端电连接有I/O设备,光电隔离电路的输出端通过放大电路与所述I/O设备的输入端连接。Preferably, the input end of the optoelectronic isolation circuit is electrically connected with an I/O device, and the output end of the optoelectronic isolation circuit is connected to the input end of the I/O device through an amplifying circuit.
与现有技术相比,本方案产生的有益效果是:Compared with the prior art, the beneficial effects of this solution are:
通过DSP芯片和FPGA芯片的设置,FPGA芯片通过对多种信号进行融合处理,从而减轻了DSP芯片的处理负担;从而实现DSP芯片通过基于态势感知的主动配电网的谐波算法对配电网中的电力线输入信号进行快速处理,使用DSP芯片通过实现故障段隔离和网络重构,从而实现能缩小停电范围,提高供电可靠性,从而有效解决配电网中的管理评估,预测规划,运行控制和故障诊断。Through the settings of the DSP chip and the FPGA chip, the FPGA chip reduces the processing burden of the DSP chip by merging and processing various signals; thus, the DSP chip can realize the harmonic algorithm of the active distribution network based on situational awareness. The power line input signal in the power line is quickly processed, and the DSP chip is used to achieve fault segment isolation and network reconstruction, so as to reduce the scope of power outages and improve the reliability of power supply, so as to effectively solve the management evaluation, prediction planning, and operation control in the distribution network. and troubleshooting.
附图说明Description of drawings
为了更清楚地说明本发明具体实施方式,下面将对具体实施方式中所需要使用的附图作简单地介绍。在所有附图中,各元件或部分并不一定按照实际的比例绘制。In order to describe the specific embodiments of the present invention more clearly, the accompanying drawings required for the specific embodiments will be briefly introduced below. In all the drawings, elements or sections are not necessarily drawn to actual scale.
图1为本发明一种基于态势感知的主动配电网的控制系统的流程框图;Fig. 1 is a flow chart of a control system of an active distribution network based on situational awareness of the present invention;
图2为本发明一种基于态势感知的主动配电网的控制系统中DSP芯片的流程框图。FIG. 2 is a flow chart of a DSP chip in an active distribution network control system based on situational awareness of the present invention.
具体实施方式Detailed ways
下面将结合附图对本发明技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本发明的技术方案,因此只作为示例,而不能以此来限制本发明的保护范围。Embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.
一种基于态势感知的主动配电网的谐波算法,包括以下步骤:A harmonic algorithm for an active distribution network based on situational awareness includes the following steps:
步骤一、通过从配电网中进行交流采样,获取电流的采样值和电压的采样值。Step 1: Obtain the sampled value of current and the sampled value of voltage by performing AC sampling from the distribution network.
步骤二、将电流的采样值和电压的采样值分别构造为复序列。Step 2: Construct the sampled value of the current and the sampled value of the voltage as complex sequences respectively.
本实施例中,从配电网中进行交流采样采集到的32点电流{i(n)}的采样值和32点电压{u(n)}的采样值分别构造一个复序列。In this embodiment, 32-point current {i(n)} sampled values and 32-point voltage {u(n)} sampled values collected from AC sampling in the distribution network construct a complex sequence respectively.
步骤三、将复序列进行离散傅里叶变换,并根据离散傅里叶变换的复共轭性质,得到基本电参数公式、电压的频谱公式和电流的频谱公式。Step 3: Perform discrete Fourier transform on the complex sequence, and obtain basic electrical parameter formula, voltage spectrum formula and current spectrum formula according to the complex conjugate property of discrete Fourier transform.
通过电压的频谱公式和电流的频谱公式分别计算出电压的谐波和电流的谐波。The voltage harmonics and the current harmonics are respectively calculated by the voltage spectrum formula and the current spectrum formula.
通过基本电参数公式计算出配电网中的基本电参数。The basic electrical parameters in the distribution network are calculated through the basic electrical parameter formula.
本实施例中,离散傅里叶变换(DFT)的具体推导步骤为:In this embodiment, the specific derivation steps of discrete Fourier transform (DFT) are:
配电网中采集具有周期信号的电压和电流可表示为如下公式:The voltage and current with periodic signals collected in the distribution network can be expressed as the following formula:
根据傅里叶级数对式(1)和式(2)进行分解:Decompose equations (1) and (2) according to the Fourier series:
或 or
其中,A0为直流分量,是周期函数f(t)一个周期内的平均值,An和Bn为傅里叶级数的系数,是n次谐波的直角坐标分量。Among them, A 0 is the DC component, which is the average value in one cycle of the periodic function f(t), and A n and B n are the coefficients of the Fourier series, which are the rectangular coordinate components of the n-th harmonic.
得出:n次谐波矢量为:It is obtained that the nth harmonic vector is:
Cn∠φn=An+jBn; C n ∠φ n =A n +jB n ;
离散后,得以下公式:After discretization, the following formula is obtained:
式中,n=0,1,2,…,N-1为谐波次数,K=0,1,2,…,N-1为采样次数;In the formula, n=0,1,2,...,N-1 is the harmonic order, K=0,1,2,...,N-1 is the sampling number;
fk为第K次采样值,N为每周波采样数;f k is the Kth sampling value, and N is the number of samples per cycle;
根据数字信号处理公式:According to the digital signal processing formula:
由式(5)、(6)和(7)可得,离散傅里叶变换(DFT)表示为:From equations (5), (6) and (7), the discrete Fourier transform (DFT) can be expressed as:
本步骤中,电压的频谱公式和电流的频谱公式为:In this step, the voltage spectrum formula and the current spectrum formula are:
电参数公式为:The electrical parameter formula is:
通过电参数公式完成各项电力参数的计算,得出各项的有效值和功率因数。Completing the calculation of various electric parameters through the electric parameter formula, the effective value and power factor of each item are obtained.
以上的技术方案,通过从配电网中获取电流的采样值和电压的采样值,通过获取电流的采样值和电压的采样值构造为复序列,然后进行离散傅里叶变换并根据其复共轭性质,从而通过频谱公式得到电压和电流中的基波及谐波含量,同时,根据电参数公式能够计算出配电网中的设备运行的电压、电流、有功和无功功率等基本电参数,从而能够快速和准确地的测量配电网中谐波的变化。In the above technical solution, a complex sequence is constructed by acquiring the sampling value of current and the sampling value of voltage from the distribution network, and then performing discrete Fourier transform and according to the complex sequence. The fundamental wave and harmonic content in the voltage and current can be obtained through the spectrum formula. At the same time, the basic electrical parameters such as voltage, current, active and reactive power of the equipment in the distribution network can be calculated according to the electrical parameter formula. Thus, the change of harmonics in the distribution network can be measured quickly and accurately.
本发明还提供以上基于态势感知的主动配电网的谐波算法的智能管控系统,包括模数电路、数模电路、光电隔离电路、DSP芯片、FPGA芯片、RAM、Flash、加密电路、稳压电路、电平转换电路和脉宽调制电路。The present invention also provides the above intelligent management and control system based on the harmonic algorithm of the active distribution network based on situational awareness, including analog-digital circuit, digital-analog circuit, optoelectronic isolation circuit, DSP chip, FPGA chip, RAM, Flash, encryption circuit, voltage regulator circuit, level conversion circuit and pulse width modulation circuit.
本实施例中,DSP芯片采用TI公司的TMS320F2812。In this embodiment, the DSP chip adopts TMS320F2812 of TI Company.
具体的,模数电路用于将采集的电压或电流的模拟信号转换成数字信号,数模电路将DSP芯片输出的数字信号转换成模拟信号。Specifically, the analog-to-digital circuit is used to convert the collected analog signal of voltage or current into a digital signal, and the digital-to-analog circuit converts the digital signal output by the DSP chip into an analog signal.
光电隔离电路用于将接收的信号进行光电隔离。Optical isolation circuit is used to optically isolate the received signal.
数模电路的输出端与DSP芯片的输入端电连接,DSP芯片内设有基于态势感知的主动配电网的谐波算法,用于交流采样和电力参数的计算和处理、且对负荷设备的检测、控制和通信。The output end of the digital-analog circuit is electrically connected to the input end of the DSP chip. The DSP chip is equipped with a harmonic algorithm of the active distribution network based on situational awareness, which is used for AC sampling and calculation and processing of power parameters, and for load equipment. Detection, control and communication.
FPGA芯片的输出端与DSP芯片的输入端电连接,FPGA芯片的输入端与光电隔离电路的输出端电连接,FPGA芯片用于对接受的若干信号进行融合处理。本实施例中,FPGA芯片用于融合配电网中获取的开关信号、原点信号和限位信号。FPGA芯片提供实时时钟和通过存储器用于保存系统的重要信息,减轻了DSP芯片的负担。The output end of the FPGA chip is electrically connected to the input end of the DSP chip, the input end of the FPGA chip is electrically connected to the output end of the optoelectronic isolation circuit, and the FPGA chip is used for fusion processing of several received signals. In this embodiment, the FPGA chip is used to fuse the switch signal, the origin signal and the limit signal obtained in the power distribution network. The FPGA chip provides a real-time clock and saves important information of the system through memory, reducing the burden on the DSP chip.
其中,RAM、Flash、加密电路和稳压电路均与DSP芯片电连接,DSP芯片通信连接有通信接口、人机界面接口和PCI接口,通信接口包括以太网接口、CAN总线接口、RS-232串口。以便于通过稳压电路与电源进行电连接,向DSP芯片提供稳定的电源。通过人机界面接口进行人机界面的交互,通过PCI接口与PC机进行通信连接。Among them, RAM, Flash, encryption circuit and voltage stabilizer circuit are all electrically connected to the DSP chip. The DSP chip is connected to a communication interface, a human-machine interface interface and a PCI interface. The communication interface includes an Ethernet interface, a CAN bus interface, and an RS-232 serial port. . In order to facilitate the electrical connection with the power supply through the voltage stabilizing circuit, a stable power supply can be provided to the DSP chip. The interaction of the man-machine interface is carried out through the man-machine interface interface, and the communication connection with the PC is carried out through the PCI interface.
同时,电平转换电路和脉宽调制电路均与DSP芯片电连接,电平转换电路用于脉冲信号的电平转换,脉宽调制电路用于PWM信号的调制。At the same time, the level conversion circuit and the pulse width modulation circuit are both electrically connected with the DSP chip, the level conversion circuit is used for level conversion of the pulse signal, and the pulse width modulation circuit is used for the modulation of the PWM signal.
光电隔离电路的输入端电连接有I/O设备,光电隔离电路的输出端通过放大电路与所述I/O设备的输入端连接。The input end of the photoelectric isolation circuit is electrically connected with the I/O device, and the output end of the photoelectric isolation circuit is connected with the input end of the I/O device through the amplifier circuit.
工作原理为:通过配电网中的电力线输入信号,通过电压互感器PT,电流互感器CT变成较低的电压信号,经滤波、信号调理,送入DSP芯片的模数电路进行AD采样,DSP芯片获取采样后的数字信号后使用同步相量测量(PMU)算法和主动配电网的谐波算法进行计算,得到设备运行的电压、电流、有功和无功功率及电度量等数据。The working principle is: input signal through the power line in the distribution network, through the voltage transformer PT, the current transformer CT becomes a lower voltage signal, after filtering and signal conditioning, it is sent to the analog-digital circuit of the DSP chip for AD sampling, After the DSP chip obtains the sampled digital signal, it uses the synchrophasor measurement (PMU) algorithm and the harmonic algorithm of the active distribution network to calculate, and obtains data such as voltage, current, active and reactive power, and electric quantity of equipment operation.
开关状态或电子式电度表通过位置传感器产生的原点信号或限位信号的脉冲输出,经光电隔离电路进入到FPGA芯片中,再送DSP芯片采集(遥信输入),DSP芯片得到遥信状态、变位记录、脉冲电度量等。The switch state or the pulse output of the origin signal or limit signal generated by the electronic watt-hour meter through the position sensor enters the FPGA chip through the photoelectric isolation circuit, and then sends it to the DSP chip for collection (remote signal input), and the DSP chip obtains the remote signal status, Displacement recording, pulse electrical quantity, etc.
通过人机界面接口投影键盘和LED显示器和发光二极管等进行人机交互。通过人机交互后的指令可经光电隔离电路,驱动输出继电器控制开关的分合闸操作,同时执行遥控或就地保护控制。Human-computer interaction is carried out through the human-machine interface interface projection keyboard, LED display and light-emitting diode. The command after human-computer interaction can drive the opening and closing operation of the output relay control switch through the photoelectric isolation circuit, and execute remote control or local protection control at the same time.
本发明通过DSP芯片和FPGA芯片的设置,具有强大的快速信号处理能力,能提高可靠性和抗干扰能力,能实现复杂的各种快速算法。能够实现能及时准确地测量谐波变化以便监控电网质量。同时,使用DSP芯片通过实现故障段隔离和网络重构,从而实现能缩小停电范围,提高供电可靠性,从而有效解决配电网中的管理评估,预测规划,运行控制和故障诊断。Through the setting of the DSP chip and the FPGA chip, the invention has powerful fast signal processing ability, can improve reliability and anti-interference ability, and can realize various complex fast algorithms. It can realize the timely and accurate measurement of harmonic changes in order to monitor the quality of the power grid. At the same time, the use of DSP chips can reduce the scope of power outages and improve the reliability of power supply by realizing fault segment isolation and network reconstruction, thereby effectively solving the management evaluation, prediction planning, operation control and fault diagnosis in the distribution network.
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围,其均应涵盖在本发明的权利要求和说明书的范围当中。The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that the foregoing embodiments can still be used for The recorded technical solutions are modified, or some or all of the technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and should be included in the The invention is within the scope of the claims and description.
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