Let's 1st understand what these planets represent on their own?

Sun - Sun represents Soul, Personality, King, Government, Father, Authority, Career, Top Positions, Ego, Self Esteem, Health, Education etc.

Venus - Venus is Beauty, Desire and Love, Liquid Money. Venus is the main significator of marriage. Venus represents girlfriend or wife for a man. Venus is the significator of all relations, may it be husband-wife or mother-daughter. Philosophically speaking, Venus is also the cause of all the sufferings in our life. How? Because Venus represents our desires and we get pain and suffering in our life only when our desires are not fulfilled.

Saturn - It is all that which we don't like in our life. Saturn is Delay, Frustration, Restriction, Limitation and Anxiety. It is people of Authority, like Boss at your Work Place or Father-Figure at Home. Saturn is our Karmic Debt from past-life. Saturn is the things we didn't treat too well in our past life. Saturn is our Challenges and Lessons of life. Saturn is Old-Age, Teeth/Bones in Human Body, Diseases, Changes etc. Saturn represents our Step-Relations, it means that wherever Saturn sits, people related with that house give us Step Treatment. Saturn is Hard Work, Efforts and most importantly Perseverance etc. Nothing comes easy and in one go with Saturn. You have to work hard continuously over the longest possible period of life. Saturn makes a person Legend as Legends have one thing in common that they choose one field and work hard in it for whole life. 

3 planetary conjunction - Whenever 3 or more planets are conjunct with each other in a house/sign then things related to that house/sign become a kind of life focus for person. It is because of huge accumulation of energy within 30 degrees of sky. It means not only these 3 planets' energy is going into this house/sign but the energy of at least 4 to 6 house/sign is going into this house/sign as these planets will be ruling some houses too. So, this house/sign with conjunction becomes almost the most important house in chart. During Career Consultation, I give a huge importance to any such house which has 3 or more planets in it.

House Ruler - Besides these karaka things, Sun, Venus & Saturn will also rule some houses in your chart and will represent things related to that house. Of course we can't cover conjunctions Ascendant and house wise else it will never be over. So, you have to include things related to the houses at the time of interpreting this conjunction. Also, we need to keep in mind all Yogas and Raj-Yogas which their conjunction would be making to completely understand the conjunction. Here, we can only cover meaning as per karakas.

Meaning of Sun-Venus-Saturn Conjunction - Now, this conjunction and next 2 conjunctions of Sun-Venus with Rahu/Ketu will create a situation where relationships will be at stake and it is like minimum results of relationship. It is because Venus is conjunct with 2 malefics in each case. Here, Venus is with Sun & Saturn, 2 mutual and greatest of enemies. Sun-Saturn together is enough to create stress for a lifetime and if Venus is with them that means relationships are the main casualties in this case. Specially if Venus is caught in between the degrees of Sun & Saturn, it reduces the results of marriage to minimum. Either because of ego conflicts or person's occupation with Career, relationships become escape goats. Positively, it shows someone who works very hard to create his career and wealth. They have to work equally hard on their creativity if they are in creative field. As Saturn is involved, any success in any field is expected only in 30s. Till then it is all about working hard. They can go into Govt or Law field mainly. Creative field or wealth factor will show results from 30s onward. Person may be really cold about love, romance and relationship rather relation/marriage may only be a formality for them just to show-off in society. 

Who will win the Conjunction? - Saturn is involved so it is all Saturn's game. . 

Dignity & Strength - 

As Saturn is involved, in any house/sign, results will be almost same.