Science topics: Electrical EngineeringDistributed Generation

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# Distributed Generation - Science topic

Explore the latest questions and answers in Distributed Generation, and find Distributed Generation experts.

Questions related to Distributed Generation

Its role and implication to the economy with particular interest in mini-grid,

The role Renewable energy can play

I do research in performance enhancement of Distribution using optimal placement and size of distributed generation (DG ) in 137 bus radial distribution system using particle swarm optimization algorithm. to do this ,how to identify or determine the Optimal Number of DG, Thermal limit and DG penetration ?

On a global scale, the energy sector is acquiring great dynamism as a result of the notable technological changes that have been taking place in recent decades. This has been motivated by the significant reduction in the cost of renewable energies, such as solar photovoltaic and wind power, and the growing concern caused by climate change, caused by the increase in the concentration of carbon dioxide generated, mainly, by massive use of fossil fuels. In this context and considering aspects such as Distributed Generation, Transactive Energy: What would be possible applications of blockchain technology in the field of energy?

I appreciate your participation in this discussion.

i am currently doing masters in Electrical engineering. as i am new in research so i dont know much about software and how to read and apply a base paper. i am currently studying BESS , their allocation and different approaches. i have read " Category-Based Multiobjective Approach for Optimal Integration of Distributed Generation and Energy Storage Systems in Distribution Networks" and i want to take this as my base paper for research. but i didn't got much from it as i am not clear about the algorithm and planning and programming used in it. can any one help me on this or help me getting its programming or contacting to its authors.?

It is well known that hyperparameter tuning on a test set with an easy split can result in overfitting. However, if the test set is very hard (i.e. a partition split that requires out of distribution generalization on the test set), is it possible to hyperparameter tune on the same test set and result in a generalizable hyperparams for the classifier?

What are the factors that most influence the decision to purchase a photovoltaic system?

What do consumers think about photovoltaic distributed generation?

Are consumers' thoughts about the distributed generation of photovoltaic energy consistent with reality?

Colleagues, good afternoon! I was wondering what problem is the most urgent at the moment in the operation, design of gas turbines and combined cycle plants. Influence of gas turbines on the steam circuit, power reduction during summer power limitations. maybe the quality of fuel and self-contained liquids?volume_up

*content_copyshare*star_borderHow does actually the net metering with TUOs work. And how is it compensation with real time..?

I am searching for a review article or report on net metering policies....

**Today's power network has distributed generations i.e. wind, PV, etc. Will there be any effect on the power system state estimation process if one of the PQ buses has renewable sources?**

Hi everyone,

I want to do voltage regulation of distributed generation(DG) specifically virtual power plants (VPPs) using evolutionary algorithms (PSO/GA) Matlab coding. If anyone has an idea how can I proceed then kindly let me know, and I also need some help in coding. Need your suggestions, Thanks

Warms Regards,

Ayaz

I am interested to simulate distribution networks with distributed generation utilizing custom controls. Simulink is quite versatile in control system design and is friendly for people preferring visual approach to programming. But I am not always satisfied with how it solves power flow for detailed network models.

Lets say that I am looking for more reliable power flow solvers, but with control system design versatility of Simulink (preferably with visual programming). Any suggestions?

The advent of smart grid concept into the conventional grid calls for more introduction and integrations of Distributed Generations(DGs). Some of the benefits of Distributed Generations(DGs) include the reduction of transmission line losses, less cost for transmission lines, quality, and reliable power supply.
Despite the numerous benefits that come with Distributed Generations, islanding condition is one of the major challenges or problems of Distributed Generations(DGs).
I am looking for a more optimized way to design, model, and build a solution for controlling islanding in Distributed Generations(DGs).

I am working on network/ switch reconfiguration for balanced/unbalanced distribution system. Please suggest best papers with proper results and understanding.

I'm trying to add the generated distribution graphs to my assay but I cannot find anywhere I can do so. I thought about using the command Line built in, however nothing on the internet nor their official website has anything on this.

Is it possible? if not could you suggest another way i can make a frequency distribution of a 2 class imbalanced dataset graph (if it could also add the p-value for statistical significance I'd be better). Either online or from a free-access source.

Thanks, it would greatly help my research :)

I am looking for technical documentation, recommendations, and precisely the limitations and tolerance of total harmonic distortion that can be cause by integration of DG.

Working on virtual management of PV system networks, I came accross with "ramp-rate control" that seems pretty plausible-simple scenario. The question crossed my mind is what is the role of PV system performance forecast in a power grid where PV generation is just a suplimentary, i.e. PV generation is a small part of the total capacity. In this case you don't very much rely on PV generation and you can cut it off if it cause fluctuation, why forecast it?

1. best SCI journals

2. minimum period of acceptance

3. unpaid journal

I need Results of PQ (V) type modeling implementation in IEEE 33/69 & IEEE 13 & IEEE 37 balanced/unbalanced distribution system.

Hello,

I need to verify results of IEEE 13 node with induction generator type of Distributed generation through steady state modeling PQ (V) type.

Thanks!

Please Suggest valid paper/thesis of Steady state modeling of Distributed Generation impact on Unbalanced Distribution network (IEEE 13, 34 & 37) by PV, PQ(V) & PI type for exact result verification.

The increase in the trend of distributed generation has led to the formation of community microgrids. What is the best possible solution to connect single-phase loads to a microgrid with 2 level voltage source converter?

I feel one possible solution to connect single-phase loads is to use a 3-phase 4 -wire transformer.

I have been trying to simulate my system whose Simulink schematic is attached, and also I have attached my results.

The issue is, even though the wind is having sufficient generation, the power demand of the load is not absorbed from the wind, instead, the grid instantly delivers the power. My system comprises of PMSG based wind generator, Battery, Load Connected before the Isolation Transformer and Grid.

Can you please suggest where I am going wrong? I want the power of the load must be supplied by the wind generator. (my results are attached)

While integrating Distributed Generation units in a power system with optimal location and optimal capacity, which we need to find first? Whether we have to find an optimal location first or we should find the optimal Capacity of Distributed generation first?

Assuming the DC generator is interfaced with a Voltage source converter (VSC), does the reactive power and phase angle come from a capacitor bank, virtual inductance of the line, or the VSC itself?

When we want to integrate Distributed Generation units like PV and Wind in a radial distribution system, it is very important to find Optimal location and Optimal capacity of DGs in order to reduce the system total losses and improve the voltage profile. In this regard, I have two questions initially.

1. Which we have to find first? Whether we have to find the optimal location first? or we have to find the optimal capacity first?

2. How to find the optimal location? Whether the optimal location will find through the algorithm? or by using an index like the Voltage Stability Index, Loss factor Index, etc.

Generally, the grid connected distributed generating systems have mandatory protection features like over voltage, over current. For operating this protection feature (over voltage), voltage sensors is required to monitor the voltage. Is the voltage sensor is mandatory to monitor the voltage?

or is it allowed to estimate the voltage instead of sensing, by using system parameters?

The question arises mainly because traditionally the rotor-angle stability is defined for power systems with large rotating machines. But in LV system with large distributed generation, what we have is inverter coupled PV units, storage (also say inverter coupled), EVs etc.

So I want to understand how rotor-angle stability (and transient stability which is also coming from rotor-angle stability) is defined in such a situation. Can someone shed some light on this topic?

I am looking for modified IEEE distribution test systems with microgrids/DERs.

Can anyone help me with this?

Any distribution test systems with MGs /DERs will be appreciated.

Thanking you very much.

in a distributed generation we find photovoltaic systems that in their topology have a dc DC link voltage of 400 to 500 V, what is the maximum variation that can have?

I am curious if the current electricity pricing mechanisms are suitable for a grid with distributed renewable generation. I am interested in real-time pricing where changes in demand and renewable generation determines the price. Can we use a mechanism e.g.

**where***Price = m x Pi + Price_base**Pi*is power injection on a bus i.e. difference in generation and load,*Price_base*is the base price settled in day-ahead market and*m*is the rate at which the price is increased to achieve demand response.I am a newbie, have studied number papers but so far none I could find that deals with distributed generation.

Any helpful guidance would be great.

As in microgrid frequency response changes with different distribution generators. To improve we use we use droop control but how does virtual inertia helps to attain frequency stability in grid.

Dear Researchers,

To my knowledge, output voltage and reactive power in droop control dependent on each other. If I am using multiple grid connected Distributed Generators (DG's) and through any method I regulate Reactive power of the DG's then will the output voltage of all DG's be close to the voltage of the grid ? Or do I need to regulate voltage as well as reactive power ? I am confused about the deep scenario of this application. Proper deep thoughts are required.

Thank you.

I think the latest developments in optimal relay coordination are adaptive settings of relays in the presence of Distributed generation. what is the area in which i should do research in pursuing PhD?

What are the recent area of research where I can focus in Distributed Generation and Smart Grid.

Hello,

Currently, I am working on voltage and frequency regulation in a microgrid consisting of two non-synchronized distributed generators. The regulation is based on the principle of primary (droop) and secondary voltage and frequency control. This microgrid can work in both standalone and interconnected mode. In this context, I am looking for simulations on SIMULINK MATLAB that can help me to simulate the primary and secondary control. If you can help me, please send me the simulation you have to this email address: samirmedamine@gmail.com

How to optimally, Control selection of Distributed Generation(wind,solar,gas turbine) in a Micro grid(100KW)?

How to synchronise Distributed Generation(wind,solar,gas turbine) to a Micro grid(100KW)

For my research work I need to have a tool for simulation on Distributed Generation. I have inquired Homer too and it is suitable also but cost matters.

System stability conditions are affected by operating patterns and load patterns. Because interference can cause stability to become a major problem on the generator side, stability appears in accordance with mechanical and electrical rotor angle fluctuations so that the use of new technologies and controls is needed, to improve operation under oscillation conditions. The Extreme Learning (ELM) engines is used to detect early warnings during transient conditions.

Papers:

Yuli Asmi Rahman, A.S., and irwan Mahmudi, Stability Issues in Presence Variable Distributed Generation Into Radial Distribution Network International Conference on Industrial Electrical and Electronics (ICIEE) 2018.

Siswanto, A., et al., Stability improvement of wind turbine penetrated using power system stabilizer (PSS) on South Sulawesi transmission system. AIP Conference Proceedings, 2018. 1941 (1): p. 020036.

Gunadin, I.C., Z. Muslimin, and A. Siswanto. Transient stability improvement using allocation power generation methods based on moment inertia. in 2017 International Conference on Electrical Engineering and Informatics (ICELTICs). 2017.

Obviously, smart grid technology is growing fast. Its contribution to energy efficiency and sustainability is undeniable. I would like to see deep in to it, what it is like, what advantages and disadvantages it might have. Dear RG members and researchers, you are welcome to to provide any reasonable comment on the topic under question.

Samuel Lakew

University of Nottingham

I would like to develop an optimization problem to provide voltage control for LV distribution networks. The goal is to calculate the change in reactive power and active power curtailment to maximize the profit of the prosumers, and to maintain the voltage profiles within accepted limits. I am wondering how the DSO (or TSO) can remunerate the prosumers for providing such a service.

I want to know how we can simulate more than two synchronous generators in matlab simulink in order to restore the power in case of main grid failure, This is the case of using synchronous generator as distributed generation for microgrid.

I am trying to simulate 2 synchronous generators but there is machine initialization issue and I am unable to initialize those generators. In my case there 2 generators and 1 source, 1 SG should be in Bus swing mode and 1 should be in PV or PQ mode according to my study but this is not working when I want to initialize the machine using power gui it's showing error regarding modes of generators.

I need some technical help tlo resolve this issue please!

in a smart grid context, the distributed generators can work in two main modes stand alone and grid connected. This implies that the control of inverters just be different not only to inject or withdrawn power to/from the grid but also to control frequency and voltage in the grid.

also the technical rules for the participation of DGs to the provision to ancillary services are also different from country to another (e,g. in Italy the standards are CEI 0-16 and 0-21).

So I would like to have an update idea of the status of art of this topic.

Good research field in power system protection

I am aware of the droop control but i cannot figure out how to implement this in MATLAB. I find papers about the droop control in case of distributed generation units which are connected to the grid by means of an inverter. Here, you can decouple the active and reactive power, generate the reference voltage accordingly and control the power sharing according to the droop control principle. This is no possible in case of synchronous generators where you can change the input power (governor control) and field excitation (excitation control).

Kindly help me with the parameter selection of the value of gains of the PR controller.

Integration of distributed generation (DG) in distribution systems has increased to high penetration levels.Integrating DG units can have an impact on the practices used in distribution systems, such as the voltage profile, power-flow, power quality, stability, reliability, and protection. so the constrain or the limit of adding DG in the system is very important.

Does the Rooftop solar consumer have to pay self.consumtion charges in any country?

Is FiT settled in monthly bill or paid separately?

what is the best method for optimal size and location of distributed generation? any useful publications will be helpful. Thanks

Am researching on how i can best represent the Smart electricity network in an object oriented way. In a way that each node in the network will be represented as a class or an object using either matlab or any other programming language say java or c++. The goal of the research is to come up with a model that will enable distributed generation of power across the entire grid and also enable plug and play of components within and out the electricity network. Am wondering if openDSS could be able to come up with such a representation.

Hello fellow researchers, I have an enquiry. We know we can use gumble distribition, extreme value distribution, log normal distribution, Pearson distribution, log Pearson distribution, general extreme value distribution for annual maximum series. My question is, are these distributions appropriate for partial duration series too?

For your information, here, Partial durations series is the peak values above a threshold value, where the threshold value is the minimum of maximum annual series. Thank you.

Please, I would be glad if I could get matlab codes for simulating both hyperbolic distribution and generalized hyperbolic. I want to try and compare the results of these Levy Processes with that of Brownian.

I would be glad for quick response.

I am looking for a standardized MV or LV microgrid test system, if it exists (something like IEEE test power systems), in order to make my research more relevant.

I have Distributed Generation units. I want to schedule it to minimize the cost objective function. Does anyone has Gams AC optimal Power flow code?

I am interested to know the latest trends adopted for distribution system protection. I would be very thankful to you for answering the following questions;

1) What are the modern trends used in various power distribution networks for protection?

2) How is protection coordination maintained in modern distribution systems in the presence of distributed generators?

3) Are the settings of relays kept fixed or changed as per prevailing power system conditions?

4) Does adaptive protection exist in the modern distribution systems?

Thank you so much for your contribution to this thread.

With best regards,

M. N. Alam

I am investigating the effect and control of Large system disturbances on the reliability of power system supply. This is as a result of novel integration of distributed generation in the grid network

Dear Collegues

Imworking on distributed generation dynamic behavior. Does anybody know about Gas and Disel Generator sets inertia? Im looking for DGs in range of 1 -5 MW.

Dear All

Consideirng the probabilistic nature of wind and PV generation, how independent system operator (ISO) ensures the balance of generation and load in a microgrid including PV, wind, gas turbine, etc in economic dispatch?

Thank you

Ahmad

In active distribution system planning problem in addition to the line and substation reinforcement, installation of DGs are allowed. I want to decompose a multi-year active distribution planning problem into a sequence of single-year problems. To this end, I used backward pull-out approach in which, firstly the planning problem is solved for the last year (year Y) considering the demand in the same year and the network configuration at the beginning of the planning period. Then, the elements determined in year Y are considered as expansion options in year Y-1 and the planning problem is solved for year Y-1. The procedure continues until the optimal plan is determined for the year 1.

I employed the backward pull-out approach on a test distribution system and observed that this method works properly for the planning of the test system in which network reinforcement and DG installation are considered concurrently.

However, somebody said to me that "back-ward algorithm was suitable for passive distribution networks, i.e. networks without DGs, and not for active ones. The overall load in year Y seen by a supply substation, can be lower than the load in year Y-1 due to the installation of new DGs in the area of the considered substation. Hence, the network expansions in year Y may not be sufficient to serve the loads in year Y-1 in which the DGs are not yet built".

My argument is that in backward approach, the elements determined in year Y are as expansion "candidates" and elements determined in year Y should exist in the same year and it is not necessary to install them in year Y. in other words, the purpose of backward approach is to determine the installation year of required elements for the last year of planning horizon considering load growth in each year.

But, I am not quietly sure about my argument.

I am using the log normal distribution to generate random values using the boost library 1.52 under Linux environment. But i have figured out that when increasing the ratio sigma/mu and it becomes > 0.45, I get negative values. Or the log normal distribution should give only prositive values.

Does anyone have got the same problem?

Thanks,

I just have a basic doubt regarding how the limits of various PI controllers used for the design of current control technique of the grid connected VSI is being selected.

I feel that applying limits to the PI controllers is a critical aspect, but I am not sure how the values is to be kept for simulation (I have attached the paper titled "Single- and Two-Stage Inverter-Based Grid-Connected Photo voltaic Power Plants With Ride-Through Capability Under Grid Faults" kindly refer to Fig. 4 of the paper and the line highlighted in green.)

Also find attached the snapshot of the Simulink model made by me in the page-2 of the second attachment titled "pid_simulink_limit"

What are the incentives of DSO for integrating decentralized generation in a liberalized energy market? And how does the regulatory framework affects the DSO business?

the impact of distributed generation on the reliability and stability?

Hello, I want to use dispatch event to increase the output of my generator in some point of the simulation.

I am on the RMS / EMT Simulation, so I thought it would be possible.

Is it possible? Can anyone help me on this?

Thank you

I need a recommendation of which method to use in my FYP. Do suggest any literature readings.

I am installing a home UPS system of 1400 VA. The UPS is a 24 volt system and, based on the batteries available on the market for the UPS segment here, will need 2 x 12 volt batteries for it.

Based on what the UPS service engineer told me, and my own research on the internet, I had nearly settled on getting a 150 AH battery.

When I was talking with a battery dealer, I mentioned that my UPS was 'solar compatible', and I also planned to connect a 500 watt solar power system (PV panel + charge controller) to my home UPS. Then he said that I should purchase a C10 battery, as these batteries were recommended for solar power uses.

What is the best method that can be adopted for finding DG PLACEMENT in radial network ?

I want to measure impedance at PCC(point of common coupling) for islanding detection in PSCAD/EMTDC.But I just don't know the way to use this software to calculate the harmonic impedance at PCC.Does any can give me some references or simulation cases about this issues?I would be sincerely very appreciate about your kind hlep.

which optimization or indices i should use for placement of DG optimally ..

in simulation 2 DGs are same and another one is different in rating power and droop coefficients, but each 3 DGs share same active power.

the controller of DG inverters are divided into 3 parts, power controller, current and voltage controller. my sys can control voltage and frequency(primary control) but load sharing isn't done correctly. where is my mistake?

I want to optimize centralized generation and distributed generation network using its:

Cost implications?

voltage control?

Downtime... How many years can it serve?

capacity?

Location of the distributed generation?

while doing power flow analysis of a radial distribution systems using backward forward method,how to apply DG with bidirection

I tried MATPOWER but I don't think it's helpful for this.

As in many Techniques like ROCOF or Vector Shift (VS) are works on the principle that at the moment of islanding formation there will be an power imbalance, if there is no power imbalance how we can detect the islanding?

Suppose the main power supply is down. The standby generator now supplies power to loads in its bus. Is it possible to make a standby generator supply power via the distribution feeder to another load points as well? If it is possible, what are the requirements (beside enough capacity)?