Intelligent Modelling and Analysis of P–Q Control Technique for SPV Plant Supplying Power to Grid
Intelligent Modelling and Analysis of P–Q Control Technique for SPV Plant Supplying Power to Grid
复制标题
SPV电站并网P-Q控制技术智能建模与分析
DOI：
10.1007/978-981-16-6081-8_7
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Ruchira
中科院分区：
文献类型：
--
作者：
Nasir ul Islam Wani;F. I. Bakhsh;Pallavi Choudekars;Ruchira
在偏远地区，从主电网传输电能造成的损耗非常高。在这种情况下，使用太阳能光伏（SPV）发电机、风力发电机和柴油发电机等本地发电机来满足当地的需求。这些发电机的单独运行是非常不可靠的，因此，单独的发电机连接到电网。本文分析了SPV电厂采用p - q控制技术向电网供电的运行情况。为了便于分析，在MATLAB/Simulink中对系统进行了建模。SPV电站容量保持100kwp，输出给最大功率点跟踪器（MPPT）。MPPT采用基于扰动和观测（P&O）的算法跟踪SPV电站的最大输出功率，并提供给电网。在控制算法中，通过parks变换将电网侧电压从abc变换到αβ，然后在锁相环（PLL）上实现所需的vv和vq值。以类似的方式，逆变器电流沿q轴解耦。使用PI控制器根据preference（参考有功功率）和diactual（实际有功功率）的差异生成d - qframe的参考值。比较后的输出用于为逆变器产生触发脉冲，使逆变器向电网提供所需的有功功率。仿真结果表明，采用所提出的dp - q控制算法，SPV电厂可以有效地控制输电网的有功功率。
In remote areas, losses due to transmission of electrical energy from main grid are very high. In such cases, local generators such as solar photovoltaic (SPV) generators, wind generators, and diesel generators are used to meet up local demand. Individual operation of these generators is highly unreliable, and hence, individual generator is linked to the grid. Here, the operation of SPV plant feeding power to the grid usingP–Qcontrol technique has been analyzed. For analysis, the system is modelled in MATLAB/Simulink. The capacity of SPV plant is kept 100 kWp, and its output is given to the maximum power point tracker (MPPT). The MPPT tracks the maximal output power of SPV plant using perturb and observe (P&O)-based algorithm and supplies it to the grid. In the control algorithm, the grid side voltage is transformed fromabctoαβby means of parks transformation, and then, on implementing phase-locked loop (PLL) the requiredVdandVqvalues are obtained. In similar manner, the inverter currents are decoupled alongd–qaxis. The reference value for thed–qframe is generated from the differences ofPreference(reference active power) andiactual(actual active power) using PI controller. The compared output is used to generate the triggering pulses for the inverter, so that the inverter supplies required active power to the grid. The obtained outcomes demonstrate that the SPV plant effectively controls the active power fed to the grid by implementation of proposedP–Qcontrol algorithm.