Grid-connected photovoltaic systems synchronization algorithms under disturbances: a low-cost hardware implementation using Arduino DUE

The article considers the inefficient Ukrainian sugar mill operation and the influence of the evaporator automated process control system on energy efficiency of sugar beet production. Sugar production issues which decrease its competitiveness in Ukraine have been identified. Analysis about the impact of the major production departments has been carried out. The influence of the evaporator on the energy efficiency of the factory and on the quality of the products that must be competitive is proved. The study determined the influence of juice quality indicators during evaporation on the quality of sugar and the drawbacks in mathematical support of automated process control systems (APCS), which occur when evaporation conditions change.The article shows the ways to solve issues that happen within decreasing the product quality and inadequate regulation of the production efficiency by means of APCS when the raw materials quality during evaporation has not been taken account. It determines the issues in the work of automated evaporation process control systems. Because of the complexity of juice evaporation in the multiple evaporation station and the influence of various process indicators both technological and qualitative we determine the main vectors of the management at automated process control systems of juice evaporation. To solve the issue, the major criteria of sugar production efficiency, regulatory requirements, theoretical foundations and the practical experience of implementation and the use of quality criteria in APCS in countries using the energy efficient and competitive technologies of sugar production are considered. The efficiency of the proposed product quality criteria for mathematical support of automated evaporation control system is substantiated. Accordingly, there is reason to think that the obtained qualitative criterion of efficiency can be used in mathematical support of automated juice evaporation process control systems at the sugar factory.

“…The colour after the evaporator can increase up 900 ICUMSA units at considerable infringements of the operating mode [9].…”

Section: 1analysis and Substantiation To Apply Relevant Effective Juice Quality Criteria In Apcs Of The Sugar Mill Evaporatormentioning

confidence: 99%

“…The expression of the differential due to the colour more accurately shows the sensitivity to different types of disturbances during evaporation. As a result, expression (9) has the form…”

Section: Determination and Estimation Of The Influence Of Different Types Of Disturbances During Evaporation On The Juice Colour For Usinmentioning

confidence: 99%

Determination and Estimation of the Influence of Different Types of Disturbances on the Thick Juice Colour

Liashenko¹

2020

“…The use of mathematical software in the APCS to adjust the evaporation is mainly to solve problems of determining the effective quality functional. Based on the theory of optimal control, variants of construction of optimal speed systems and procedures of analytical design of optimal regulators were made out [3,12,13,14].…”

Section: Improvement Of Mathematical Support and Implementation Of Modern Criteria Of Juice Quality In The Automated Process Control Systmentioning

confidence: 99%

Improvement of Mathematical Support and Implementation of Modern Criteria of Juice Quality in the Automated Process Control Systems at the Sugar Mill Evaporation Station

Liashenko¹

2020

The article considers the operation of sugar mills in Ukraine and reasons affecting their efficiency. It determines the influence of the evaporation station operation on the energy efficiency of the factory and on qualitative indicators of the products. The study shows the influence of changes in juice qualitative indicators that form during the evaporation on sugar quality. The directions in the work of the automated process control systems (APCS) are shown, which help to eliminate the problems that reduce the efficiency of the evaporation station. An important area in the APCS operation is the control of the product quality and energy efficiency regimes that ensure this quality. Due to the complexity of the juice evaporation in a multiple evaporation station and the influence of various indicators, both technological and qualitative, the main vectors of work in automated process control systems of the juice evaporation are determined. An important way to improve the efficiency of the evaporator is the development and application of mathematical software at the APCS, which will reflect the real changes during the evaporation; and accordingly the software and equipment that are used for the control of the evaporation process and will appropriately respond to these changes. The article considered the main criteria of sugar production efficiency, normative requirements, the oretical bases and practical experience of introduction and use of qualitative criteria in the APCS in the countries using energyefficient and competitive technologies of sugar production. The study justifies the efficiency of the proposed product qualitative criteria in the method and algorithm to calculate the thermal evaporation regime for the mathematical support of the automated process control system. Accordingly, there is reason to believe that the obtained qualitative criterion of efficiency, algorithm and method of calculation of the thermal process, which take into account both indicators of technological nature and indicators of the juice quality, can be used in mathematical software of the APCS at the sugar mill multiple evaporation station.

“…But, dynamic interaction of low inertia MG with existing grid has been a challenging issue for power system operators. In [3] synchronization of a grid connected PV system is presented. The MG may be based on synchronous, induction generator or generations based on power electronics-based converters.…”

Section: Introductionmentioning

confidence: 99%

Optimal setting of governor parameters of a grid connected micro grid to damp power system oscillations

Nahak¹

2020

Power oscillation damping is a challenging task for a micro grid when connected to grid. Here the micro grid modeling is based on synchronous generation that includes governor & excitation parameter also. This work proposes that effective setting of governor parameters of micro grid can damp system oscillations heavily pertaining to disturbance such as changes in input mechanical prime mover power. Optimization technique PSO, GWO have been employed to tune governor parameters & have been compared with proposed hybrid PSO with improved GWO technique in this work. It has been observed in this work that changes in input mechanical power of micro grid excites system oscillations & the governor with optimal settings of its parameter can efficiently damp these oscillations. Eigen values analysis have been conducted to justify the efficiency of proposed optimal governor & the control law has been compared with standard techniques & proposed techniques.